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  • 1.
    Adle, Sebastian
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Hägesten Nilsson, Maja
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Implementering av ett Manufacturing Execution System: En undersökning och kartläggning av systemets viktigaste funktioner för ett effektivt arbetssätt.2020Självständigt arbete på grundnivå (kandidatexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Det här examensarbetet har utförts på Scania CV AB:s motorbearbetningsavdelning i Södertälje. I dagsläget pågår en omställning av tillverkningsprocessen på avdelningen där två nya tillverkningslinor, en för cylinderblock och en för cylinderhuvud, är under uppbyggnad. Linorna kommer styras med hjälp av ett Manufacturing Execution System.

    Ett Manufacturing Execution System har i uppgift att samla in data och information från tillverkningsprocessen, som sedan kan presenteras i ett gränssnitt. Vilken information som kommer finnas tillgänglig att presentera i systemet styrs utifrån en intern kravspecifikation som ska spegla International Society of Automation:s standard, även känd som ISA-95.

    Den kravspecifikation som finns för systemet är framtagen av IT-avdelningen i samråd med avdelningschefer. För närvarande är det osäkert om kravspecifikationen som finns på systemet stämmer överens med vad medarbetarna behöver för att kunna arbeta på ett effektivt sätt. Det här arbetet kartlägger behovet hos medarbetarna och jämför det med den befintliga kravspecifikationen.

    Genom intervjuer och enkäter har den befintliga kravspecifikationen för systemet jämförts med vad medarbetarna anser vara önskvärda funktioner i systemet. Resultatet av den första omgången intervjuer och enkätutskick var att kravspecifikationen och behovet hos medarbetarna stämmer väl överens. Det mynnade ut i att ytterligare en enkät skickades ut där medarbetarna istället skulle rangordna den information som kommer finnas tillgänglig i systemet utefter en prioriteringsskala i tre nivåer. Resultatet från den enkäten gav en bild av vilken information medarbetarna tycker är viktigast för att kunna arbeta på ett effektivt sätt.

    Ladda ner fulltext (pdf)
    fulltext
  • 2.
    Ahmed, Uday
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Ayo, Priscilla
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Filosofiska fakulteten.
    Developing Common Questions about Integrated Product Service Engineering (IPSE), Ecodesign and Engineering Education2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    In the recent years, more and more manufacturing firms recognize the benefit of providing products together with related services with an aim to gain higher profits as compared to supplying products without additional services. On the other hand, the competition in the global markets has been increased dramatically through increased sales of services in order to gain additional value for their products. In addition, several environmental challenges such as climate change, pollution, global warming impact, greenhouse gases emissions have played a vital role by influencing on the production protocols and trend of the companies. These challenges forced manufacturing countries to take into consideration environmentally conscious approach to their design thinking and industrial production processes. As a result, it became an important drive for manufacturing industries to shift from traditional product-oriented to service-oriented business models that has been witnessed during the last few years.

     

    The objective of this study research is to develop common questions that capture fundamental and common issues about Integrated Product Service Engineering (IPSE), Design for Environment (DFE) and Engineering education are effectives for industries to check and develop their knowledge, because the Engineering education plays a necessary role in associating socio-ethical knowledge with scientific and technological advances. The strategy taken to conduct this thesis task was first to study and understand the concept of Product Service System (PSS), IPSE, and Ecodesign as well as Engineering Education. Informative knowledge on these concepts were collected by reviewing several related journal articles, CIRP IPS2 conference proceedings.

     

    In this thesis the concepts of PSS, IPSE, DFE and Engineering Education discussed to develop the key common questions and issues to address the environmental, economic and social problems. Since PSS aims to reduce consumption through alternative schemes of product use as well as to increase overall resource productivity and dematerialization, but IPSE does not focus on a single factor but incorporates a wide range of factors such as environmental, social and economic issues. Whilst one of the main problems in this research focused on how to develop and strengthen the relationship between the academia and industry, and how this relation can be used to improve the academic performance and scientific research at universities and transfer them to industry.

     

    Sustainability and the life cycle concept have become a main solution for various problems such as a growing world population and a change in the industrial culture to come. As results Ecodesign and environmental considerations, financial aspects, product improvement as well as the commercial aspects were discussed in this project by understanding the previous concepts. The university considered as an important base of cultivating the talents, basic of inputs business organizations which help them to develop and improve their level of performance and quality of their products and services, and enhance its competitive position in the market. Changes in organized science further encouraged university interests in expanding technology transfer, because the scientific disciplines play an important role in influencing the type of interactions with industry as well as the University and Industry collaboration became the basic method of solving the problems to achieve (environmental, economic and social) sustainability.

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    Developing Common Questions about Integrated Product Service Engineering (IPSE), Ecodesign and Engineering Education
  • 3.
    Aldén, Elin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Hantering av digitala verktygsmodeller: En studie av hur 3D-modeller av monteringsverktyg ska lagras, struktureras och geopositioneras på Scania CV AB inom Chassimontering2012Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    På grund av ökad produktkomplexitet och digitala arbetssätt har fler företag insett nyttan i att implementera och använda sig av bra system för Produkt Lifecycle Management och Product Data Management för att hantera produkten genom dess livscykel. Funktionen hos PLM-system är framförallt att se till att alla har tillgång till den senast uppdaterade datan. Detta uppnås genom ett centralt ställe att lagra produktdata samt möjlighet att strukturera och hantera datan. Scania använder sig av Spectra och Enovia för att strukturera och lagra dagens konstruktionsdata. På senare år har digital provmontering införts i chassiproduktion som ett komplement till den fysiska provmonteringen. Detta för att digitalt simulera monterbarhet av nya artiklar innan de går ut i produktion.

    På provmonteringen på chassiavdelningen MSPAP har det upptäckts ett behov av att bättre lagra och strukturera de verktygsmodeller som används under provmonteringar. Framförallt behövs det skapas en större tillgänglighet till modellerna. Verktygsmodellerna används för att simulera åtkomst för verktyg vid montering. Examensarbetet utförs för att se över införandet av Enovia och Spectra även i produktionen för att hantera den ökade mängden 3D-modeller som idag lagras på processteknikernas egna datorer.

    Två metoder för att importera befintliga och framtida 3D-modeller in till Enovia har tagits fram. Det är processteknikerna i produktion som gör verktygsinvesteringar och därför ska de utföra importerna till Enovia när de får in nya ritningar/modeller från verktygsleverantörer. En teststruktur byggdes även upp i Spectra, Scanias PLM-system utefter dagens monteringssekvens på chassiline. En undersökning av hur verktygsmodeller ska positioneras geometriskt i den digitala miljön har också genomförts.

    Studien visade att chassiproduktion borde införa Enovia för lagring av modeller, och även se över strukturering och möjlighet till geopositionering, av verktygsmodeller. För att geopositionering ska ske korrekt krävs det att systemstöd tas fram även för verktygsmodeller och inte bara för produkter som finns idag.

    För att chassiavdelningen och Scania i stort ska förbättra sin utvecklingsprocess och minska omtag och slöseri bör kommunikationen mellan produktion och utveckling bli bättre. Kommunikation kommer att förbättra utnyttjandet av varandras kunskaper och resurser. Scania borde även ställa högre krav på sina underleverantörer av verktyg såsom krav på leverans av 3D-material för att underlätta sin strävan mot ett digitalt arbetssätt i en 3D-miljö.

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    Hantering av digitala verktygsmodeller. slutrapport
  • 4.
    Alladi, Yaswanth Kumar
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. 1995.
    Improving the Tube processing Layout: Including new orbital cutting machine2020Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Blomberg & Stensson is the sheet metal and tube processing company. This master thesis is done in tube processing facility. Tube processing facility consists of tube cutting, deburring, bending, end forming, bending and pressing machines. This facility produces bended tubes. Bended tubes are mainly used in automobiles (flow of liquids such as fuel and lubricants). Blomberg & Stensson bought a new orbital cutting machine from Transfluid (Germany). The new orbital cutting machine is going to be installed in tube processing section. This Master thesis focuses on tube cutting (both new, old and current), bending and deburring machines.

    This thesis is aimed to develop a layout of tube processing section by including new orbital cutting machine. Suggestion on raw material storage and suggestions on material allocation to current and new cutting machines are also included in this master thesis. To design the layout a systematic layout planning technique is considered and google sketch up application is used to develop the 3d layout designs. After developing layouts, selection of a single suitable layout is done by a scoring matrix (concept from product development). Scoring matrix is to evaluate the available solutions. After selection risk analysis is made to predict the risks. An activity list is made facilitate a physical transformation of the facility.

    Ladda ner fulltext (pdf)
    fulltext
  • 5.
    Andersson, Frida
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Hagqvist, Astrid
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Konstruktion för tillverkning av strukturdelar i komposit: En DFM-strategi för SAAB Aerostructures2013Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    På SAAB Aerostructures i Linköping utvecklas och tillverkas delsystem, så som dörrar och skevroder, till kommersiella flygplan åt framförallt Boeing och Airbus. Inom flygindustrin går utvecklingen mot en större användning av kompositmaterial i denna typ av strukturer. För att befästa sin position på marknaden och bygga kunskap kring konstruktion i och tillverkning av kompositmaterial har SAAB startat ett forskningsprojekt kallat GF Demo. Projektet syftar till att ta fram nästa generations kompositstrukturer för civilflygplan, samt att utveckla effektiva produktionsprocesser för detta. En utmaning med konstruktioner i kompositmaterial är den dyra och komplexa tillverkningsprocessen. För att skapa möjlighet för effektiv tillverkning måste konstruktionerna anpassas efter produktionstekniska krav tidigt i utvecklingsarbetet. Syftet med detta arbete är att utveckla en strategi för hur SAAB ska lyckas med detta. Arbetet har fokuserat på large cargo door till Boeings Dreamliner som är ett av de delsystem som ingår i GF Demo. SAAB har som målsättning att fördubbla takten i tillverkningen av dessa dörrar, för att uppnå målet måste konstruktionen utvecklas för att passa tillverkningen. Ett sätt att skapa roduktionsanpassade konstruktioner är att arbeta med DFM. Genom att undersöka kommersiella DFM-metoder och hur andra företag arbetar med dessa frågor har en strategi anpassad efter företagets förutsättningar utvecklats. Den benchmarking och litteraturstudie som genomfördes visade på ett antal faktorer som skapar förutsättningar för ett lyckat arbete med DFM. De viktigaste faktorerna är att arbetet är förankrat i hela organisationen och att det finns väldefinierade mål med arbetet samt en tydlig ansvarsfördelning. För att kunna identifiera vilka specifika utmaningar som finns på SAAB har anställda på företaget intervjuats. De utmaningar som identifierats är framförallt tillverkningen av kompositartiklar, granskningar av konstruktioner utifrån produktionstekniska förutsättningar samt rutiner vid konceptval. Utifrån detta har en strategi utformats som hanterar främst dessa utmaningar och på lång sikt säkrar att de viktigaste framgångsfaktorerna realiseras på SAAB. En del av strategin är ett verktyg som konstruktörerna kan använda i sitt dagliga arbete för att underlätta utvecklingen av tillverkningsvänliga konstruktioner. Den framtagna strategin inbegriper organisatoriska, taktiska och strategiska förändringar. Den är utformad för att möta problematiken kring framförallt kompositartiklar och tillverkningen av dessa. Strategin innehåller moment från kommersiella produktutvecklings- och DFM-metoder som har anpassats efter de förutsättningar som finns på SAAB. Att arbeta strukturerat med DFM bidrar till en effektivare produktutvecklingsprocess och utveckling av konstruktioner anpassade för tillverkningsprocessen.

    Ladda ner fulltext (pdf)
    fulltext
  • 6.
    Andersson, Frida
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Hagqvist, Astrid
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Björkman, Mats
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Design for Manufacturing of Composite Structures for Commercial Aircraft: The Development of a DFM strategy at SAAB Aerostructures2014Ingår i: Procedia CIRP, ISSN 2212-8271, Vol. 17, s. 362-367Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Within the aircraft industry, the use of composite materials such as carbon fiber reinforced plastics (CFRPs) is steadily increasing, especially in structural parts. Manufacturability needs to be considered in aircraft design to ensure a cost-effective manufacturing process. The aim of this paper is to describe the development of a new strategy for how SAAB Aerostructures addressing manufacturability issues during the development of airframe composite structures. Through literature review, benchmarking and company interviews, a design for manufacturing (DFM) strategy was developed. The strategy ensures that the important factors for successful DEM management are implemented on strategic, tactical and operational levels that contribute to a more cost-efficient product development process and aircraft design.

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    fulltext
  • 7.
    Andreasson, Martin
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Irvall Karlsson, David
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Genomloppstidssänkning för lågvolymstillverkning med hög variation: En kartläggning av värdeflödet i en tillverkningsprocess av hylsor2018Självständigt arbete på grundnivå (kandidatexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Examensarbetet har genomförts på SKF Mekan AB i Katrineholm som tillverkar lagertillbehör, bland annat lagerhus, hylsor och muttrar. I ett av de produktionsflöden som tillverkar hylsor har SKF Mekan AB problem med långa genomloppstider och överproduktion. Produktionsprocessen som tillverkar dessa hylsor är helt kundorderstyrd vilket betyder att alla artiklar som tillverkas där inte finns på lager utan tillverkas när kunden lägger en beställning.

    SKF Mekan AB ser den långa genomloppstiden som ett problem då det påverkar kunden och bidrar till högre kostnader, vilket har lett fram till arbetets syfte. Genom att undersöka flödet och ta reda på vilka faktorer som påverkar den långa genomloppstiden, har förbättringsförslag tagits fram för att ge SKF Mekan AB verktyg för att sänka genomloppstiden.

    Genom intervjuer och observationer har en undersökning av flödet kunnat genomföras. För att kunna utesluta var i flödet de bidragande faktorerna till den långa genomloppstiden befinner sig, har en värdeflödesanalys genomförts med hjälp av insamlade data. En litteraturstudie har legat till grund för vilka teorier och verktyg som kan användas för att lösa problem som SKF Mekan AB har.

    Resultatet från värdeflödesanalysen visade att bearbetningsmaskinen BBM101agerar flaskhals i flödet. De största bidragande faktorerna till skapandet av flaskhalsen är problem vid inkörning av nytt program och omställningar mellan olika produkter. Utöver dessa problem identifierades även oreda bland halvfärdigt och överproducerat material som stod utspritt i flödet. Genom att införa ett CAD/CAM system för beredningen, lägga mer fokus på 5Sarbetet och genomföra en SMED-analys skapas möjligheter till en sänkt genomloppstid.

  • 8.
    Ankarberg, Martin
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Jilnö, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Redesign of Gas Hydraulic Suspension for Product Service System: A Master Thesis Work at Strömsholmen AB2018Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    In these times, when manufacturing firms wonder how to integrate products and services into innovative offerings, how should products be designed to be of most value? This study is the investigation of this question for the manufacturing firm Strömsholmen AB, which designs gas springs and hydraulic suspension. The research has led to interviews of personnel to identify challenges and a workshop to generate new service ideas. By analyzing a specific gas hydraulic suspension product, this study shows that designing for product service systems (PSS) with a life-cycle perspective specifically for manufacturing, assembly, delivery, use, maintenance and remanufacturing, can greatly reduce costs and open up for innovative PSS business models. Using Design for Assembly, Design for Disassembly, Design for Serviceability and Design for Remanufacturing shows how concrete improvements to a product can be made. Improvements that show the potential of a redesign for the gas hydraulic suspension. Integrating products and services and pursuing the ideas and methods of this thesis, will ultimately make Strömsholmen better prepared to differentiate, to stay competitive, to deepen customer relations and to gain greater profits long-term.

    Ladda ner fulltext (pdf)
    fulltext
  • 9.
    Bergkvist, Erik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Sabbagh, Tommy
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Smart Future Solutions for Maintenance of Aircraft: Enhancing Aircraft Maintenance at Saab AB2021Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This master thesis has the purpose to analyse and identify smart efficient future solutions within the Maintenance, Repair and Overhaul (MRO) process for aircraft. The efficiency solutions, in form of new technologies and tools, should present a foundation that MRO suppliers can continue to develop to enhance and streamline their maintenance processes. The project was performed as a case study at the aerospace and defense company Saab AB in Linköping, where the company's MRO process was investigated. Through identifying possibilities and alternative technologies available today and in the near future, one continues to have a competitive and future-proof position in the market. 

    Through an own constructed course of action influenced from established methods, the thesis' purpose and aim was attained. The method was based on authentic approaches for case studies but also inspired by the so-called "Requirement Engineering". The combination of the methods resulted in a precise focus on the relevant subjects, together with a clear structure of the requirements on the technologies to reach a successful implementation. Through a detailed data collection comprised of study visits, interviews, literature studies, market analyses, and document reviews, multiple relevant technologies and requirement-lists for utilization were identified. 

    To concretize the use and potential improvements with the technologies, the project had the objective to develop a demonstrator with one of the technologies presented. The demonstrator should focus on minimizing the use of paper, which is a common problem among many market actors today. The most promising technology was considered to be a tablet application with an accommodated application. The selection of the tablet solution was based on the motivation that it is a well-established technology and a favorable first step from paperwork. 

    To conclude this master thesis, a tablet application was developed in Novacura Flow Studio, where the majority of the identified requirements were fulfilled. Beyond the demonstrator, an introduction and analysis of technologies, such as AR-glasses, voice guidance, additive manufacturing, and a digital twin, was presented.

    Ladda ner fulltext (pdf)
    Smart Future Solutions for Maintenance of Aircraft
  • 10. Beställ onlineKöp publikationen >>
    Björnsson, Andreas
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Automated layup and forming of prepreg laminates2017Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [sv]

    Polymera kolfiberkompositer erbjuder en eftertraktad kombination av låg vikt och högstyrka som kan bidra till lättviktskonstruktioner som t.ex. kan leda till bränslebesparingarför passagerarflygplan. Inom flygindustrin har användningen av denna materialtyp ökatkraftigt med introduktionen av en ny generation flygplan som till mer än hälften består avkompositmaterial. Den ökade användningen av polymera fiberkompositer medför ett ökatbehov av rationella produktionsmetoder.

    Inom flygindustrin tillverkas ofta polymera kolfiberkompositprodukter av så kallatprepreg-material som består av kolfibrer impregnerade med en plast. Det finns tvåhuvudalternativ för automatisk tillverkning av prepreg-baserade produkter, automatisktejpläggning eller automatisk fiberplacering. De två alternativen har tekniskabegränsningar och är förknippade med mycket höga investeringskostnader vilket gör attdet finns produkter som de inte kan tillverka eller som inte är kostnadseffektiva atttillverka med dessa två metoder. Andra automatiska alternativ har utvecklats, men har intenått någon större industriell implementering. Bristen på automatiseradetillverkningsalternativ leder till att produkter med komplex form, och som tillverkas i småoch medelstora volymer ofta tillverkas manuellt.

    Forskningen som presenteras i denna avhandling syftar till att undersöka hur automatiskatillverkningsceller för tillverkning av polymera kolfiberkompositprodukter med komplexform kan utformas så att de uppfyller de krav som gäller för tillverkningen av produkterför flygindustrin och är lämpliga för låga och medelhöga tillverkningsvolymer. Endemonstratorcentrerad forskningsmetod har använt för att utforska området och ett flertaldemonstratorer har byggts och testats tillsammans med partners från industrin och andraforskningsorganisationer. Demonstratorerna, som är kompletta tillverkningsceller, haranvänts för att identifiera metoder och utrustning som är nödvändiga att utveckla för attautomatisera denna typ av tillverkning och för att undersöka några metoder och tillhörandeutrustning mer i detalj. Demonstratorerna har också använts för att kartlägga faktorer sompåverkar hur metoder och utrustning utformas.

    Automatisk tillverkning av produkter med komplex form kan förenklas genom att delaupp tillverkningen i två steg. Först läggs prepreg-ark ihop till ett laminat som formas tillproduktens form i ett efterföljande steg. För att automatisera denna typ av tillverkningbehöver nyckelmetoder och nyckelutrustning för hopläggning av laminat, borttagning avskyddspapper samt formning av laminat till komplexa former utvecklas. Viktiga faktorersom påverkar utformningen av tillverkningscellerna är prepreg-materialens låga styvhetoch klibbiga yta, de höga kvalitetskrav som gäller för tillverkning avflygplanskomponenter samt att systemen måste hantera en stor mängd olikformadeprepreg-ark. Demonstratorerna visar att det är möjligt att automatisera tillverkningen avpolymera kolfiberprodukter med komplex form genom automatisk uppläggning ochformning av plana laminat. Tester med demonstratorerna pekar på att det är möjligt atttillverka produkterna i enlighet med de kvalitetskrav som finns för manuell tillverkningav liknande produkter.

    Delarbeten
    1. Composite Manufacturing: How Improvement Work Might Lead to Renewed Product Validation
    Öppna denna publikation i ny flik eller fönster >>Composite Manufacturing: How Improvement Work Might Lead to Renewed Product Validation
    2012 (Engelska)Ingår i: Proceedings of the 5th International Swedish Production Symposium / [ed] Mats Björkman, 2012, s. 505-513Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    High-performance polymer composites are mainly used in applications where the benefits of high strength and low weight justify the high material and manufacturing costs. Many of these applications are found today in the aerospace, space and defense industries. Most of today’s commonly used manufacturing methods within this area are highly labor intensive. Furthermore, the quality requirements from the customers require a high level of process control. The purpose of this paper is to explore how changes that are introduced in order to improve productivity in a manufacturing system are managed, particularly with regard to who takes the decision to implement a change and how a change is validated. The study is based on qualitative interviews performed at several companies that manufacture composite components for the aerospace, space and defense sectors. The findings show that the responsibility for deciding to implement a change and the need for validating it are based on many diverse and interconnected factors. Therefore, it is difficult to construct guidelines for early assessment of the scope and cost of a proposed change. Hence each individual change request must be evaluated on its own. The study also shows that the validation process can be adapted to a level that is based on the type of change. In addition, it highlights that control over process parameters in manufacturing is essential.

    Nyckelord
    composite manufacturing, validation, change request management
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-85268 (URN)978-91-7519-752-4 (ISBN)
    Konferens
    5th International Swedish Production Symposium (SPS 2012), 6-8 November 2012, Linköping, Sweden
    Tillgänglig från: 2012-11-14 Skapad: 2012-11-14 Senast uppdaterad: 2017-05-17
    2. Automated Removal of Prepreg Backing Paper - A Sticky Problem
    Öppna denna publikation i ny flik eller fönster >>Automated Removal of Prepreg Backing Paper - A Sticky Problem
    2013 (Engelska)Ingår i: Proceedings of the SAE 2013, Aerotech Congress and Exhibition, 24th-26th September 2013, Montreal,Canada, 2013Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    Automated solutions for manufacturing composite products based on prepreg often imply Automatic Fiber Placement or Automatic Tape Laying. These systems are generally associated with huge investments. For certain manufacturing applications it is interesting to investigate alternatives to find simpler and less costly automation. One example of an automated system could be the use of a standard industrial robot to pick single prepreg plies from an automated cutting machine and stack them to form a plane laminate. This paper is based on a case illustrating a product from the aircraft manufacturing industry. The case will demonstrate a pick and place concept on a general level and illustrate challenges that must be solved. The challenge selected to be the main focus for this paper is an automated process for backing paper removal. A literature review of different gripping technologies reveals several interesting technologies, and the most promising are tested for backing paper removal. The tests show that an automated removal process can be designed by using standard vacuum grippers in combination with mechanical clamping grippers. In order to lift the backing paper with a vacuum gripper an initial separation between the backing paper and prepreg is needed. This separation is most easily mechanically induced by bending the material. The proposed solution for automatic backing paper removal can be integrated in a manufacturing cell for manufacturing of the studied product.

    Nyckelord
    composite manufacturing, automation, prepreg, gripping technology
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-99344 (URN)10.4271/2013-01-2289 (DOI)
    Konferens
    SAE 2013 Aerotech Congress and Exhibition, September 24-26, 2013, Montréal, Quebec, Canada
    Anmärkning

    SAE Technical Paper 2013-01-2289

    Tillgänglig från: 2013-10-16 Skapad: 2013-10-16 Senast uppdaterad: 2017-05-17Bibliografiskt granskad
    3. Automation of Composite Manufacturing Using Off-the-shelf Solutions, Three Cases from the Aerospace Industry
    Öppna denna publikation i ny flik eller fönster >>Automation of Composite Manufacturing Using Off-the-shelf Solutions, Three Cases from the Aerospace Industry
    2015 (Engelska)Ingår i: Proceedings of the 20th International Conference on Composite Materials, 2015Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Abstract [en]

    With an increased use of composite materials follows a need for rational, cost-efficient manufacturing processes. This paper explores how off-the-shelf solutions, developed for other purposes than composite manufacturing, can be used to build systems for automated composite manufacturing. Three demonstrators, each of them dealing with a specific type of material and all of them representing different manufacturing technologies for automated composite manufacturing, are presented and analyzed to find aspects that affect the ability to use off-the-shelf solutions. The three demonstrators target low to medium manufacturing volumes of complex products and they have been developed in collaboration with industrial partners within the aerospace industry. The conclusions drawn from the development of the demonstrators are that it is technically feasible to use off-the-shelf solutions in the three cases while adhering to the high quality standards of the industry. Furthermore three groups of aspects, quality aspects, product aspects and system aspects, which affect the ability to use off-the-shelf solutions for automated composite manufacturing, are identified.

    Nyckelord
    composite manufacturing, automation, off-the-shelf, aerospace
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-120300 (URN)
    Konferens
    ICCM20 - The 20th International Conference on Composite Materials, 19-24th July 2015, Copenhagen Denmark
    Tillgänglig från: 2015-07-27 Skapad: 2015-07-27 Senast uppdaterad: 2023-02-02
    4. Low-cost Automation for Prepreg Handling - Two Cases from the Aerospace Industry
    Öppna denna publikation i ny flik eller fönster >>Low-cost Automation for Prepreg Handling - Two Cases from the Aerospace Industry
    2016 (Engelska)Ingår i: SAE International Journal of Materials & Manufacturing, ISSN 1946-3979, E-ISSN 1946-3987, Vol. 9, nr 1, s. 68-74Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    With an increased use of composite materials within the aerospace industry follows a need for rational and cost-effective methods forcomposite manufacturing. Manual operations are still common for low to medium manufacturing volumes and complex products.Manual operations can for example be found in material handling, when picking prepreg plies from a cutter table and stacking them toform a plane laminate in preparation for a subsequent forming operation. Stacking operations of this kind often involves a greatnumber of different ply geometries and removal of backing paper and other protecting materials like plastic. In this paper two differentdemonstrator cells for automated picking of prepreg plies and stacking of plane laminates are presented. One demonstrator is utilizinga standard industrial robot and an advanced end-effector to handle the ply variants. The other demonstrator is using a dual arm robotwhich allow for simpler end-effector design. In combination with a previously developed system for automated removal of backingpapers both systems have shown to be capable of automatically picking prepreg plies from a plane surface and stack them to generate aflat multistack laminate. The dual arm approach has shown advantageous since it result in simpler end-effector design and a successivelay down sequence that result in good adhesion between the plies in the laminate.

    Ort, förlag, år, upplaga, sidor
    Warrendale, USA: SAE International, 2016
    Nyckelord
    Composite, Manufacturing, Automation, Low-cost, Prepreg
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-121602 (URN)10.4271/2015-01-2606 (DOI)000386445700008 ()
    Tillgänglig från: 2015-09-28 Skapad: 2015-09-28 Senast uppdaterad: 2023-02-02Bibliografiskt granskad
    5. Robot-Forming of Prepreg Stacks ‐ Development of Equipment and Methods
    Öppna denna publikation i ny flik eller fönster >>Robot-Forming of Prepreg Stacks ‐ Development of Equipment and Methods
    Visa övriga...
    2016 (Engelska)Ingår i: Proceedings of the 17th European Conference on Composite Materials (ECCM17), 2016Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Abstract [en]

    Within the aerospace industry the manufacturing of composite components with complex shapes, such as spars, ribs and beams are often manufactured using manual layup and forming of prepreg material. Automated processes for prepreg layup and efficient forming techniques like vacuum forming are sometimes difficult to employ to these type of products due to technical limitations. This paper describes the development of tools and the forming sequence needed to automate sequential forming of a complex shape using an industrial robot. Plane prepreg stacks are formed to the final shape using a dual-arm industrial robot equipped with rolling tools. Tests show that the developed tools and the employed sequence can be used to form stacks to the desired shape with acceptable quality.

    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-129925 (URN)
    Konferens
    ECCM17 - 17th European Conference on Composite Materials 26-30th June 2016, Munich, Germany
    Tillgänglig från: 2016-07-01 Skapad: 2016-07-01 Senast uppdaterad: 2023-02-02Bibliografiskt granskad
    Ladda ner fulltext (pdf)
    fulltext
    Ladda ner (pdf)
    omslag
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    presentationsbild
  • 11.
    Björnsson, Andreas
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Enabling Automation of Composite Manufacturing through the Use of Off-The-Shelf Solutions2014Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Composite materials offer an appealing combination of low weight and high strength that is especially sought after in high-performance applications. The use of composite materials has and is continuing to increase, and the use of the material has been shown to provide substantial weight savings in for example aircraft design. With an increased use of composite materials follows an increased demand for cost-efficient manufacturing methods.

    Composite products are in many cases manufactured either by manual operations or by the use of complex automated solutions associated with high investment costs. The objective for this research is to explore an approach to develop automated composite manufacturing based on commercially available off-the-shelf solutions as an alternative to the existing automated solutions for composite manufacturing.

    The research, which was carried out in collaboration with industrial partners within the aerospace sector, is based on a demonstrator-centered research approach. Three conceptual demonstrators, focusing on three different manufacturing methods and a number of physical demonstrators, are used to show that off-the-shelf solutions can be used for automated manufacturing of composite products.

    Two aspects that affect if it is possible to use off-the-shelf solutions for automated composite manufacturing are the rigorous quality standards used by the aerospace industry and the great variety in product properties and material properties that is associated with composite manufacturing.

    The advantages in using off-the-shelf solutions has shown to be that the solutions generally are associated with low investments and that published information about the solutions, and the solutions themselves, is generally available for evaluation and testing. When working with the demonstrators it has been shown to be useful to break down a manufacturing system into basic tasks and consider off-the-shelf solutions for each particular task. This approach facilitates the search for a suitable off-the-shelf solution to solve a particular task. However, each of the separate tasks can affect other areas of the manufacturing system, and an overall systems perspective is required to find solutions that are compatible with the entire manufacturing system.

    Delarbeten
    1. Automated Removal of Prepreg Backing Paper - A Sticky Problem
    Öppna denna publikation i ny flik eller fönster >>Automated Removal of Prepreg Backing Paper - A Sticky Problem
    2013 (Engelska)Ingår i: Proceedings of the SAE 2013, Aerotech Congress and Exhibition, 24th-26th September 2013, Montreal,Canada, 2013Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    Automated solutions for manufacturing composite products based on prepreg often imply Automatic Fiber Placement or Automatic Tape Laying. These systems are generally associated with huge investments. For certain manufacturing applications it is interesting to investigate alternatives to find simpler and less costly automation. One example of an automated system could be the use of a standard industrial robot to pick single prepreg plies from an automated cutting machine and stack them to form a plane laminate. This paper is based on a case illustrating a product from the aircraft manufacturing industry. The case will demonstrate a pick and place concept on a general level and illustrate challenges that must be solved. The challenge selected to be the main focus for this paper is an automated process for backing paper removal. A literature review of different gripping technologies reveals several interesting technologies, and the most promising are tested for backing paper removal. The tests show that an automated removal process can be designed by using standard vacuum grippers in combination with mechanical clamping grippers. In order to lift the backing paper with a vacuum gripper an initial separation between the backing paper and prepreg is needed. This separation is most easily mechanically induced by bending the material. The proposed solution for automatic backing paper removal can be integrated in a manufacturing cell for manufacturing of the studied product.

    Nyckelord
    composite manufacturing, automation, prepreg, gripping technology
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-99344 (URN)10.4271/2013-01-2289 (DOI)
    Konferens
    SAE 2013 Aerotech Congress and Exhibition, September 24-26, 2013, Montréal, Quebec, Canada
    Anmärkning

    SAE Technical Paper 2013-01-2289

    Tillgänglig från: 2013-10-16 Skapad: 2013-10-16 Senast uppdaterad: 2017-05-17Bibliografiskt granskad
    2. Three-Dimensional Ultrasonic Cutting of RTM-Preforms – A Part of a High Volume Production System
    Öppna denna publikation i ny flik eller fönster >>Three-Dimensional Ultrasonic Cutting of RTM-Preforms – A Part of a High Volume Production System
    2013 (Engelska)Ingår i: Proceedings of the 19th International Conference on Composite Materials, 28th July - 2nd August 2013, Montreal, Canada: Composite Materials:The Great Advance / [ed] Suong Van Hoa & Pascal Hubert, Electronic Publishing BytePress.com , 2013, s. 8960-8969Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    The process parameters for an automated, three-dimensional ultrasonic cutting process of RTM-preforms are examined in order to find how they affect the cutting quality.

    Ort, förlag, år, upplaga, sidor
    Electronic Publishing BytePress.com, 2013
    Nyckelord
    composite manufacturing, ultrasonic cutting, preform, RTM, automation
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-95875 (URN)978-0-9696797-1-4 (ISBN)
    Konferens
    19th International Conference on Composite Materials (ICCM19), July 28 - August 2, 2013, Montréal, Canada
    Tillgänglig från: 2013-08-05 Skapad: 2013-08-05 Senast uppdaterad: 2016-09-26
    3. Automated Composite Manufacturing Using Off-the-shelf Automation Equipment – A Case from the Space Industry
    Öppna denna publikation i ny flik eller fönster >>Automated Composite Manufacturing Using Off-the-shelf Automation Equipment – A Case from the Space Industry
    2014 (Engelska)Ingår i: Proceedings of the 16th European Conference on Composite Materials, 22nd-26th June 2014, Seville, Spain, 2014Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    A novel approach to the manufacturing of composite products using off-the-shelf automation equipment is explored in this article. A manufacturing concept for a specific product is developed and analyzed, from a technical perspective, in order to find areas where off-the-shelf automation equipment can be used. The article also highlights areas where case-specific solutions need to be developed. In this particular case, off-the-shelf automation equipment can be used for most of the tasks that the manufacturing system needs to perform. The most challenging process is identified as the application of adhesive. The manufacturing concept described in the article shows that it is possible to build a system for the manufacturing of composite components using a high degree of off-the-shelf automation equipment.

    Nyckelord
    composite, automation, off-the-shelf, adhesive joining
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-109107 (URN)978-84-616-9798-4 (ISBN)
    Konferens
    16th European Conference on Composite Materials (ECCM16), June 22-26, 2014, Seville, Spain
    Tillgänglig från: 2014-08-08 Skapad: 2014-08-08 Senast uppdaterad: 2016-09-26
    4. Composite Manufacturing: How Improvement Work Might Lead to Renewed Product Validation
    Öppna denna publikation i ny flik eller fönster >>Composite Manufacturing: How Improvement Work Might Lead to Renewed Product Validation
    2012 (Engelska)Ingår i: Proceedings of the 5th International Swedish Production Symposium / [ed] Mats Björkman, 2012, s. 505-513Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    High-performance polymer composites are mainly used in applications where the benefits of high strength and low weight justify the high material and manufacturing costs. Many of these applications are found today in the aerospace, space and defense industries. Most of today’s commonly used manufacturing methods within this area are highly labor intensive. Furthermore, the quality requirements from the customers require a high level of process control. The purpose of this paper is to explore how changes that are introduced in order to improve productivity in a manufacturing system are managed, particularly with regard to who takes the decision to implement a change and how a change is validated. The study is based on qualitative interviews performed at several companies that manufacture composite components for the aerospace, space and defense sectors. The findings show that the responsibility for deciding to implement a change and the need for validating it are based on many diverse and interconnected factors. Therefore, it is difficult to construct guidelines for early assessment of the scope and cost of a proposed change. Hence each individual change request must be evaluated on its own. The study also shows that the validation process can be adapted to a level that is based on the type of change. In addition, it highlights that control over process parameters in manufacturing is essential.

    Nyckelord
    composite manufacturing, validation, change request management
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-85268 (URN)978-91-7519-752-4 (ISBN)
    Konferens
    5th International Swedish Production Symposium (SPS 2012), 6-8 November 2012, Linköping, Sweden
    Tillgänglig från: 2012-11-14 Skapad: 2012-11-14 Senast uppdaterad: 2017-05-17
    Ladda ner fulltext (pdf)
    Enabling Automation of Composite Manufacturing through the Use of Off-The-Shelf Solutions
    Ladda ner (pdf)
    omslag
    Ladda ner (jpg)
    presentationsbild
  • 12.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Composite Manufacturing: How Improvement Work Might Lead to Renewed Product Validation2012Ingår i: Proceedings of the 5th International Swedish Production Symposium / [ed] Mats Björkman, 2012, s. 505-513Konferensbidrag (Refereegranskat)
    Abstract [en]

    High-performance polymer composites are mainly used in applications where the benefits of high strength and low weight justify the high material and manufacturing costs. Many of these applications are found today in the aerospace, space and defense industries. Most of today’s commonly used manufacturing methods within this area are highly labor intensive. Furthermore, the quality requirements from the customers require a high level of process control. The purpose of this paper is to explore how changes that are introduced in order to improve productivity in a manufacturing system are managed, particularly with regard to who takes the decision to implement a change and how a change is validated. The study is based on qualitative interviews performed at several companies that manufacture composite components for the aerospace, space and defense sectors. The findings show that the responsibility for deciding to implement a change and the need for validating it are based on many diverse and interconnected factors. Therefore, it is difficult to construct guidelines for early assessment of the scope and cost of a proposed change. Hence each individual change request must be evaluated on its own. The study also shows that the validation process can be adapted to a level that is based on the type of change. In addition, it highlights that control over process parameters in manufacturing is essential.

    Ladda ner fulltext (pdf)
    fulltext
  • 13.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Alexandersson, Dan
    GKN Aerospace Applied Composites AB.
    Three-Dimensional Ultrasonic Cutting of RTM-Preforms – A Part of a High Volume Production System2013Ingår i: Proceedings of the 19th International Conference on Composite Materials, 28th July - 2nd August 2013, Montreal, Canada: Composite Materials:The Great Advance / [ed] Suong Van Hoa & Pascal Hubert, Electronic Publishing BytePress.com , 2013, s. 8960-8969Konferensbidrag (Refereegranskat)
    Abstract [en]

    The process parameters for an automated, three-dimensional ultrasonic cutting process of RTM-preforms are examined in order to find how they affect the cutting quality.

    Ladda ner fulltext (pdf)
    fulltext
  • 14.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Thuswaldner, Michael
    RUAG Space AB, Linköping, Sweden.
    Automated Composite Manufacturing Using Off-the-shelf Automation Equipment – A Case from the Space Industry2014Ingår i: Proceedings of the 16th European Conference on Composite Materials, 22nd-26th June 2014, Seville, Spain, 2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    A novel approach to the manufacturing of composite products using off-the-shelf automation equipment is explored in this article. A manufacturing concept for a specific product is developed and analyzed, from a technical perspective, in order to find areas where off-the-shelf automation equipment can be used. The article also highlights areas where case-specific solutions need to be developed. In this particular case, off-the-shelf automation equipment can be used for most of the tasks that the manufacturing system needs to perform. The most challenging process is identified as the application of adhesive. The manufacturing concept described in the article shows that it is possible to build a system for the manufacturing of composite components using a high degree of off-the-shelf automation equipment.

    Ladda ner fulltext (pdf)
    fulltext
  • 15.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Jonsson, Marie
    Swerea Sicomp, Compraser Labs, Bröderna Ugglas Gata hus 208B, 58188 Linköping, Sweden.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Automated material handling in compostie manufacturing using pick-and-place systems - a review2018Ingår i: Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, E-ISSN 1879-2537, Vol. 51, s. 222-229Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    With increasing use of fiber reinforced polymer composites follows a natural pursuit for more rational and effective manufacturing. Robotic pick-and-place systems can be used to automate handling of a multitude of materials used in the manufacturing of composite parts. There are systems developed for automated layup of prepreg, dry fibers and thermoplastic blanks as well as to handle auxiliary materials used in manufacturing. The aim of this paper is to highlight the challenges associated with automated handling of these materials and to analyze the main design principles that have been employed for pick-and-place systems in terms of handling strategy, reconfigurability, gripping technology and distribution of gripping points etc. The review shows that it is hard to find generic solutions for automated material handling due to the great variety in material properties. Few cases of industrial applications in full-scale manufacturing could be identified.

  • 16.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Jonsson, Marie
    Swerea Sicomp, Compraser Labs.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Automation of Composite Manufacturing Using Off-the-shelf Solutions, Three Cases from the Aerospace Industry2015Ingår i: Proceedings of the 20th International Conference on Composite Materials, 2015Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    With an increased use of composite materials follows a need for rational, cost-efficient manufacturing processes. This paper explores how off-the-shelf solutions, developed for other purposes than composite manufacturing, can be used to build systems for automated composite manufacturing. Three demonstrators, each of them dealing with a specific type of material and all of them representing different manufacturing technologies for automated composite manufacturing, are presented and analyzed to find aspects that affect the ability to use off-the-shelf solutions. The three demonstrators target low to medium manufacturing volumes of complex products and they have been developed in collaboration with industrial partners within the aerospace industry. The conclusions drawn from the development of the demonstrators are that it is technically feasible to use off-the-shelf solutions in the three cases while adhering to the high quality standards of the industry. Furthermore three groups of aspects, quality aspects, product aspects and system aspects, which affect the ability to use off-the-shelf solutions for automated composite manufacturing, are identified.

    Ladda ner fulltext (pdf)
    fulltext
  • 17.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Jonsson, Marie
    Swerea SICOMP, Sweden.
    Lindbäck, Jan Erik
    Saab Aerostructures, Sweden.
    Åkermo, Malin
    Royal Institute of Technology, KTH, Aeronautical and Vehicle Engineering, Sweden.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Robot-Forming of Prepreg Stacks ‐ Development of Equipment and Methods2016Ingår i: Proceedings of the 17th European Conference on Composite Materials (ECCM17), 2016Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Within the aerospace industry the manufacturing of composite components with complex shapes, such as spars, ribs and beams are often manufactured using manual layup and forming of prepreg material. Automated processes for prepreg layup and efficient forming techniques like vacuum forming are sometimes difficult to employ to these type of products due to technical limitations. This paper describes the development of tools and the forming sequence needed to automate sequential forming of a complex shape using an industrial robot. Plane prepreg stacks are formed to the final shape using a dual-arm industrial robot equipped with rolling tools. Tests show that the developed tools and the employed sequence can be used to form stacks to the desired shape with acceptable quality.

  • 18.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Lindbäck, Jan Erik
    Saab Aerostructures, Sweden.
    Eklund, Daniel
    Swerea Sicomp, Sweden.
    Jonsson, Marie
    Swerea Sicomp, Sweden.
    Low-cost Automation for Prepreg Handling - Two Cases from the Aerospace Industry2016Ingår i: SAE International Journal of Materials & Manufacturing, ISSN 1946-3979, E-ISSN 1946-3987, Vol. 9, nr 1, s. 68-74Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    With an increased use of composite materials within the aerospace industry follows a need for rational and cost-effective methods forcomposite manufacturing. Manual operations are still common for low to medium manufacturing volumes and complex products.Manual operations can for example be found in material handling, when picking prepreg plies from a cutter table and stacking them toform a plane laminate in preparation for a subsequent forming operation. Stacking operations of this kind often involves a greatnumber of different ply geometries and removal of backing paper and other protecting materials like plastic. In this paper two differentdemonstrator cells for automated picking of prepreg plies and stacking of plane laminates are presented. One demonstrator is utilizinga standard industrial robot and an advanced end-effector to handle the ply variants. The other demonstrator is using a dual arm robotwhich allow for simpler end-effector design. In combination with a previously developed system for automated removal of backingpapers both systems have shown to be capable of automatically picking prepreg plies from a plane surface and stack them to generate aflat multistack laminate. The dual arm approach has shown advantageous since it result in simpler end-effector design and a successivelay down sequence that result in good adhesion between the plies in the laminate.

    Ladda ner fulltext (pdf)
    fulltext
  • 19.
    Björnsson, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Lindbäck, Jan Erik
    Saab Aerostructures.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Automated Removal of Prepreg Backing Paper - A Sticky Problem2013Ingår i: Proceedings of the SAE 2013, Aerotech Congress and Exhibition, 24th-26th September 2013, Montreal,Canada, 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    Automated solutions for manufacturing composite products based on prepreg often imply Automatic Fiber Placement or Automatic Tape Laying. These systems are generally associated with huge investments. For certain manufacturing applications it is interesting to investigate alternatives to find simpler and less costly automation. One example of an automated system could be the use of a standard industrial robot to pick single prepreg plies from an automated cutting machine and stack them to form a plane laminate. This paper is based on a case illustrating a product from the aircraft manufacturing industry. The case will demonstrate a pick and place concept on a general level and illustrate challenges that must be solved. The challenge selected to be the main focus for this paper is an automated process for backing paper removal. A literature review of different gripping technologies reveals several interesting technologies, and the most promising are tested for backing paper removal. The tests show that an automated removal process can be designed by using standard vacuum grippers in combination with mechanical clamping grippers. In order to lift the backing paper with a vacuum gripper an initial separation between the backing paper and prepreg is needed. This separation is most easily mechanically induced by bending the material. The proposed solution for automatic backing paper removal can be integrated in a manufacturing cell for manufacturing of the studied product.

    Ladda ner fulltext (pdf)
    fulltext
  • 20.
    Casper, Robert
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Addressing Today’s challenges in automotive remanufacturing2018Ingår i: Journal of Remanufacturing, ISSN 2210-4690, Vol. 8, s. 93-102Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Automotive remanufacturing companies are nowadays facing a wide range ofchallenges. Typical challenges from the point of view of suppliers, producers and customers.Several process steps are analysed and problem fields are dissected: From the core management,to disassembly and cleaning to machining and testing. The main fields of challengesanalysed in this paper are: the vagueness in respect of fiscal value, environmental regulationsand taxation of core parts, the important need for a continuing qualification of staff andengineers, an efficient core management, the adaption of pricing models and the competence tohandle the growing variety and complexity. The focus of this analysis lies on activities of theindependent after-market (IAM) for remanufactured products.

    Ladda ner fulltext (pdf)
    Journal of Remanufacturing Casper and Sundin 2018
  • 21.
    Casper, Robert
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Electrification in the automotive industry: effects in remanufacturing2021Ingår i: Journal of Remanufacturing, ISSN 2210-4690, Vol. 11, nr 2, s. 121-136Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The automotive market is changing. For many years, cars with internal-combustion engines were dominant. Recently, more cars with alternative drive trains have become available, and their market share has increased, a trend that has had an effect on the remanufacturing industry for automotive parts. This paper aims to describe and evaluate the challenges and opportunities in the coming years for the remanufacturing industry as a result of the increasing number and share of electric vehicles. Both theory and empirical data have been used to meet this aim. From theory, the two different drive train concepts of the internal combustion engine and the battery electric vehicle are described, along with the major differences from a remanufacturing standpoint. These differences and effects are described, evaluated, and fully or partly confirmed by industry experts. The results show that future market actors are unset today, less space-consuming machinery parks will be needed, major investments into knowledge and equipment (especially for testing) will be required, and the necessity to handle different kinds of end-of-use/life solutions, especially the recovery for the electric vehicle battery packs, will be a challenge. As future development is still uncertain, the authors recommend that market actors investigate the challenges and opportunities highlighted in this paper and watch future developments carefully.

    Ladda ner fulltext (pdf)
    fulltext
  • 22.
    Casper, Robert
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Reverse Logistic Transportation and Packaging Concepts in Automotive Remanufacturing2018Ingår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 25, s. 154-160Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A key process in a closed-loop supply chain is managing and challenging the transportation and packaging management. Strict environmental regulations in connection with transport of environmentally hazardous substances (e.g. oil) are offering a highcost-saving potential in connection with an optimised transportation and packaging concept. The aim of this case orientated paperis to provide the framework for the management of reverse flow of materials in automotive industry. The emphasis is placed onthe remanufacturing activities. To obtain and verify the necessary information for the above mentioned problems, differentmethods and techniques have been applied: 1) Relevant, available literature in connection with this matter was studied; 2) Dataand documents was requested directly by relevant market actors; 3) The clustered data was analysed and samples werehighlighted; and 4) The data was evaluated and recommended courses of action were given. The results show that the mainproblems appear in the area of forward and reverse logistics: Packaging concepts which do not protect the product in an optimalway (forward / reverse logistics). Moreover, packaging concepts which do not protect the environment against potential negativeinfluence of a used part (reverse logistics) A best practice for the transportation of engine components is given and evaluated: Anengine in a metal frame with oil-pan. Securely attached by bolts. Packed in plastic bag.

  • 23.
    Colombo, Armando Walter
    et al.
    Univ Appl Sci Emden Leer, Germany; Univ Appl Sci Emden Leer, Germany; IEEE Ind Elect Soc IES, Canada.
    Karnouskos, Stamatis
    IEEE, Canada.
    Yu, Xinghuo
    RMIT Univ, Australia.
    Kaynak, Okyay
    IEEE, Canada.
    Luo, Ren C.
    Natl Taiwan Univ, Taiwan.
    Shi, Yang
    IEEE, Canada; Univ Victoria, Canada.
    Leitao, Paulo
    IEEE, Canada; Polytech Inst Braganca, Portugal.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten. IEEE, Canada.
    Haase, Jan
    IEEE, Canada; Nordakademie Univ Appl Sci, Germany.
    A 70-Year Industrial Electronics Society Evolution Through Industrial Revolutions: The Rise and Flourishing of Information and Communication Technologies2021Ingår i: IEEE Industrial Electronics Magazine, ISSN 1932-4529, E-ISSN 1941-0115, Vol. 15, nr 1, s. 115-126Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Industrial Revolution, which originally involved the change from an agrarian and handicraft economy to a market dominated by factory mechanization during the early 18th century, has profoundly shaped the world. It has progressed through four disruptive phases: Industry 1.0 through Industry 4.0. Industry 1.0 encompassed early automation, while Industry 2.0 began at the end of the 19th century, when enormous technological advances were made, such as mass production, electrification, and new modes of transportation. Industry 3.0 began during the 1970s, a decade that gave rise to the electronics, telecommunications, and computing that enable full automation and robotics. Industry 4.0 kicked off at the dawn of the third millennium, marked by the ubiquitous use of Internet technologies, which have radically transformed how people, society, and industry interact.

  • 24.
    Di Orio, Giovanni
    et al.
    Dept. of Electrotechnical Engineering CTS – UNINOVA, Portugal.
    Rocha, Andre
    Dept. of Electrotechnical Engineering CTS – UNINOVA, Portugal.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Barata, Jose
    Dept. of Electrotechnical Engineering CTS – UNINOVA, Portugal.
    The PRIME Semantic Language: Plug and Produce in Standard- based Manufacturing Production Systems2015Ingår i: Proceedings of the Flexible Automation and Intelligent Manufacturing Conference, 2015Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Nowadays manufacturing production systems are becoming more and more responsive in order to succeed in ahighly unstable environment. The capability of a production system to effectively and efficiently adapt and evolveto face the changing requirements – imposed by volatile and dynamic global markets – is a necessary conditionto enable manufacturing enterprises to be agile. Since the agility of a manufacturing enterprise is always limitedby the agility of its own building blocks than it needs to be spread over the whole enterprise including the operationand information technologies (OT/IT). Turning to production systems, one of the significant challenges isrepresented by the possibility to provide easy and rapid (re-)configuration of their internal components and/orprocesses. Innovative technologies and paradigms have been explored during the years that combined with theincreasing advancement in manufacturing technologies enable the implementation of the “plug and produce”paradigm. The “plug and produce” paradigm is the foundation of any agile production system, since to be agile itis inevitably required to reduce the installation and (re-)engineering activities time – changing/adapting the systemto new requirements – while promoting configuration rather than programming. Therefore, the “plug andproduce” paradigm is a necessary but not sufficient condition for implementing agile production systems. Modernproduction systems are typically known for their plethora of heterogeneous component/equipment. In this complexscenario, the implementation of the “plug and produce” paradigm implies the existence of a well-definedontological model to support components/equipment abstraction with the objective to allow interactions,collaboration and knowledge sharing between them. The PRIME semantic language specifies the semanticstructure for the knowledge models and overall system communication language.

  • 25.
    Dias-Ferreira, João
    et al.
    Production Engineering, The Royal Institute of Technology (KTH), Stockholm, Sweden.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Akillioglu, Hakan
    Production Engineering, The Royal Institute of Technology (KTH), Stockholm, Sweden.
    Neves, Pedro
    Production Engineering, The Royal Institute of Technology (KTH), Stockholm, Sweden.
    Onori, Mauro
    Production Engineering, The Royal Institute of Technology (KTH), Stockholm, Sweden.
    BIOSOARM: a bio-inspired self-organising architecture for manufacturing cyber-physical shopfloors2018Ingår i: Journal of Intelligent Manufacturing, ISSN 0956-5515, E-ISSN 1572-8145, Vol. 29, nr 7, s. 1659-1682Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Biological collective systems have been an important source of inspiration for the design of production systems, due to their intrinsic characteristics. In this sense, several high level engineering design principles have been distilled and proposed on a wide number of reference system architectures for production systems. However, the application of bio-inspired concepts is often lost due to design and implementation choices or are simply used as heuristic approaches that solve specific hard optimization problems. This paper proposes a bio-inspired reference architecture for production systems, focused on highly dynamic environments, denominated BIO-inspired Self-Organising Architecture for Manufacturing (BIOSOARM). BIOSOARM aims to strictly adhere to bio-inspired principles. For this purpose, both shopfloor components and product parts are individualized and extended into the virtual environment as fully decoupled autonomous entities, where they interact and cooperate towards the emergence of a self-organising behaviour that leads to the emergence of the necessary production flows. BIOSOARM therefore introduces a fundamentally novel approach to production that decouples the system’s operation from eventual changes, uncertainty or even critical failures, while simultaneously ensures the performance levels and simplifies the deployment and reconfiguration procedures. BIOSOARM was tested into both flow-line and “job shop”-like scenarios to prove its applicability, robustness and performance, both under normal and highly dynamic conditions.

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    fulltext
  • 26.
    Elfving, Sofi W.
    et al.
    Ericsson AB, Stockholm, Sweden.
    Lindahl, Mattias
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Ericsson – The History from Product to Solution Provider and Challenges and Opportunities in an Evolving Environment2015Ingår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 30, s. 239-244Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An increasing number of Original Equipment Manufacturers (OEM) are realizing that their products, earlier the foundation of their success, no longer stand alone in satisfying customer requirements. Customers now demand integration of services and bundling as well as increased active participation of OEMs during the use phase. Ericsson, a Swedish multinational OEM of communications technology and services, is an example of such a company. The objective of this paper is to describe, compare and discuss Ericsson's journey from a product provider to a PSS provider, e.g. by comparison with other industry examples. Furthermore, the paper highlights future challenges and opportunities for instance regarding business models, trends and product design.

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    fulltext
  • 27. Beställ onlineKöp publikationen >>
    Elo, Kristofer
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Automation in the Recycling Industry: Recycling of Plastic and Large Liquid Crystal Displays2013Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    In a world of growing population and increasing prosperity, the demand for new high-technology products is increasing together with the demand for rawmaterials. To be able to deal with the demand for new raw materials and the increasing amount of waste, the recycling industry needs to prepare itself to cope with these changes. If the waste can become the new raw materials, then the recycling industry has a bright future. The implementation of new ways to recycle products can be the solution to succeeding in this challenge.

    The objective of this research is to investigate, from a technical perspective, automation in the recycling industry. More specifically, the objective is to identify problems and solutions in the recycling of plastics and large liquid crystal displays in order to better cope with current recycling requirements.

    This research was inspired by the research methodologies of industry-aslaboratory, action research, experimental research and two concept development methods.

    The results related to the recycling of plastics come from a theoretical investigation of the possibilities for a plastic sorting facility. The investigation resulted in two concepts for recycling systems, implementable with today’s stateof-the-art technology and a more futuristic concept for sorting and separating the different plastics of interest. The systems are designed with standardised processes and are arranged in a flexible way to be able to manage with current industrial requirements.

    The results related to large liquid crystal displays include a clarification of the requirements for an automatic recycling plant, concept generation, and practical testing of different technologies. Two preferred processes for dismantle large liquid crystal displays are the circle saw and band saw. Additional results are the semi-automatic process structure to manage with current industrial requirements for large liquid crystal displays.

    Delarbeten
    1. Automation of Plastic Recycling – A case study
    Öppna denna publikation i ny flik eller fönster >>Automation of Plastic Recycling – A case study
    2009 (Engelska)Ingår i: Proceedings of EcoDesign 2009, Sapporo, Japan, Springer, 2009, s. 935-940Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    Plastic recycling is an increasingly important issue intoday’s society. The number of plastics and theirvariation with additives has increased lately, affecting inturn the possibilities for plastic material recycling.However, trends in e.g. Japan show a reduction in thenumber of plastics used in e.g. household appliances.This reduction has been put into force in order to easeplastic recycling for those kinds of products.In Sweden, more efforts are put on collecting plasticfor material recycling. The intention for doing this is tohave more plastic material recycled rather thanincinerated and energy recovered. This paper deals witha conceptual investigation and development of anautomatic plastic recycling plant in Sweden. In order toreach a recycling plant that fulfills required technical andeconomic specifications, a large investigation of existingtechniques was performed. This investigation revealedmany techniques described in research, but also whichtechniques that were used by recycling industry today.The results of these studies became a conceptual andpotential well-functioning material recycling plant forplastics which is fully automatic. However, the focus ofthis development has been to sort out and materialrecycle the most common plastics, namely polyetene(LDPE and HDPE), polypropylene (PP), polyethylene(PET), polyvinyl chloride (PVC) and polystyrene (PS)whereas the other plastics have been sorted out forenergy recovery. Having these delimitations, a goodrecycling process plant can be achieved.

    Ort, förlag, år, upplaga, sidor
    Springer, 2009
    Nyckelord
    plastic, recycling, automation, Sweden, material recycling.
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-63006 (URN)978-4-88898-192-7 (ISBN)
    Konferens
    6th International Symposium on Environmentally Conscious Design and Inverse Manufacturing, December 7-9, Sapporo, Japan
    Tillgänglig från: 2010-12-08 Skapad: 2010-12-08 Senast uppdaterad: 2016-04-12
    2. Requirements and needs of automatic material recycling of flat panel displays
    Öppna denna publikation i ny flik eller fönster >>Requirements and needs of automatic material recycling of flat panel displays
    2010 (Engelska)Ingår i: Proceedings of Going Green CARE INNOVATION 2010, 8th International Symposium, November 8-11, Vienna, Austria, paper 107 on CD., 2010, s. 107-107Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    The amount of flat panel displays in the World is increasing and the day whenthe displays will start to end up in the waste stream in great number is getting closer. Themost common flat panel display, the liquid crystal display, contains liquid crystals, indiumand mercury. The capacity of the recycling plants is not dimensioned according to theamount of displays that needs to be recycled in the near future. To increase the capacity ofthe recycling plants and achieve a better work environment there is a possibility to automatethe recycling process in a greater extends comparing with today. The requirements andneeds of the automated processes are to handle; all incoming material, e.g. liquid crystaldisplays, plasma display panel, organic light emitted diode, other types of displays andother electronic waste, identify and separate the different incoming materials, disassemblethe material and separate the components and materials of interest.

    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-63008 (URN)
    Konferens
    Going Green CARE INNOVATION 2010, 8th International Symposium, November 8-11, Vienna, Austria
    Projekt
    AutoDisAHÅPLA
    Tillgänglig från: 2010-12-08 Skapad: 2010-12-08 Senast uppdaterad: 2016-04-12Bibliografiskt granskad
    3. Conceptual Process Development of Automatic Disassembly of Flat Panel Displays for Material Recycling
    Öppna denna publikation i ny flik eller fönster >>Conceptual Process Development of Automatic Disassembly of Flat Panel Displays for Material Recycling
    2011 (Engelska)Ingår i: Proceedings from the International Conference on Remanufacturing 2011, Glasgow, UK, University of Strathclyde, 27 - 29 July 2011, 2011, s. 187-197Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    Sales of television sets and computer monitors with flat panel displays have increased dramatically in recent years, and are expected to result in approximately 2.5 billion liquid crystal displays in Europe in the near future. A large investment will be required in Europe as well as globally to handle the large numbers of flat panel displays that are beginning to enter the waste stream today.Given the long-term effects of increased energy and raw material costs, as well as political directives to effect climate change and environmental pollution, it will be a necessity as well as a business opportunity to recycle both the raw materials and components from electronics waste. It is already an accepted truth that “today’s waste is tomorrow’s resources”.The research for this paper aims at exploring what process concepts there are for making an automatic recycling process of flat panel displays. The recycling process shall be both economical and practical to implement in the existing recycling industry.This paper is based on the requirements and needs facing Swedish electronic recycling companies due to the growing amount of electronic waste. This includes the material that will enter an automated flat panel display recycling facility, together with the material and components of interest.The conceptual process has been developed by conducting literature reviews and interviews with recycling companies, as well as by performing practical tests and financial calculations. The result of the evaluation of concepts shows that a circle-saw concept is most suitable, since it has high capacity and provides a good working environment in comparison to the other concepts studied.

    Nyckelord
    Automation, Material recycling, Disassembly, Conceptual process development
    Nationell ämneskategori
    Maskinteknik
    Identifikatorer
    urn:nbn:se:liu:diva-71725 (URN)09-4764-981-6 (ISBN)978-09-4764-982-1 (ISBN)
    Konferens
    International Conference on Remanufacturing 2011, Glasgow, UK, University of Strathclyde, 27 - 29 July 2011
    Projekt
    AutoDisA
    Tillgänglig från: 2011-11-02 Skapad: 2011-11-02 Senast uppdaterad: 2016-04-12
    Ladda ner fulltext (pdf)
    Automation in the Recycling Industry: Recycling of Plastic and Large Liquid Crystal Displays
    Ladda ner (pdf)
    omslag
  • 28.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Automatic Dismantling Challenges in the Structural Design of LCD TVs2014Ingår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 15, s. 251-256Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Many liquid crystal display television sets (LCD TVs) end up in the waste stream today. The combination of hazardous materials such as mercury and liquid crystal, and the labor-intensive disassembly of LCD TVs, make the recycling process interesting to automate. However, since there are so many manufacturers the variation of LCD TVs is high, making automation a challenge. Todays most common automatic process utilizes shredders, resulting in degradation of recycled material and possible decontamination of machine equipment. This paper aims to investigate the challenges related to the structural design of LCD TVs for an automatic dismantling process for the recycling of LCD TVs. The challenges identified during the empirical study were related to the mixture of materials, inhomogeneous materials, thin design, separation of the different components and finding a suitable dismantling sequence without unnecessary removal of components.

    Ladda ner fulltext (pdf)
    fulltext
  • 29.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Process concepts for semi-automatic dismantling of LCD televisions2014Ingår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 23, nr 2014, s. 270-275Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    There is a large variety of electrical and electronic equipment products, for example liquid crystal display television sets (LCD TVs), in the waste stream today. Many LCD TVs contain mercury, which is a challenge to treat at the recycling plants. Two current used processes to recycle LCD TVs are automated shredding and manual disassembly. This paper aims to present concepts for semi-automated dismantling processes for LCD TVs in order to achieve higher productivity and flexibility, and in turn increase the value of the recycled materials, improve the work environment for operators and remove mercury from the recycled materials. A literature review and two empirical studies were performed to be able to present a concept for dismantling direct illuminated LCD TVs. The process used a circular saw and/or a band saw to machine two cuts in LCD TVs to gain access to the mercury-containing cold cathode fluorescent lamps inside. This conceptual process is compared to the other processes found in the literature.

    Ladda ner fulltext (pdf)
    fulltext
  • 30.
    Engbåge, Niklas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Flodell, Jakob
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Effektivisering av layout i produktionshallen på ETP Transmission AB: Layoutoptimering2019Självständigt arbete på grundnivå (högskoleexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This bachelor thesis is made on behalf of ETP Transmission AB during spring2019 to develop and produce layouts that are optimized for future demands. The proposals of the layouts should consider aspects such as ergonomics, economics and efficiency.

    ETP:s products include casings and chucks. The production is located in Linköping, Sweden. In 2017 the company had 52 employees and the turnover was 110 million SEK. ETP:s vision for the production is to make it more efficient to be able to produce more. Therefore, they have decided to invest in the production hall by adding a lathe and three paternoster lifts. They also want to make space for two sanding machines. Because of the changes in the production hall, ETP needs a new layout to fulfill their new demands.

    The method “Systematic Layout Planning” has been used to develop different proposals of layouts. Together with theory from different types of productions has three different layout concepts created. These concepts have been analysed through an extensive SWOT analysis process. Based on ETP:s suggestion, only two concepts were focused on. The result includes two layouts, both of them are fulfilling ETP:s demands.

    The report describes the ideology “Lean”, with focus on the 5S tool. 5S is a tool that helps keep the workplace organized and maximize efficiency and effectiveness. The ideology Lean was used in the development of the concepts.

    Ladda ner fulltext (pdf)
    Effektivisering av layout i produktionshallen på ETP Transmission AB
  • 31.
    Engkvist, Inga-Lill
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för fysioterapi. Linköpings universitet, Medicinska fakulteten. KTH Royal Institute Technology, Sweden.
    Eklund, Jörgen
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Logistik- och kvalitetsutveckling. Linköpings universitet, Tekniska fakulteten. KTH Royal Institute Technology, Sweden.
    Krook, Joakim
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten.
    Björkman, Mats
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Perspectives on recycling centres and future developments2016Ingår i: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 57, s. 17-27Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The overall aim of this paper is to draw combined, all-embracing conclusions based on a long-term multidisciplinary research programme on recycling centres in Sweden, focussing on working conditions, environment and system performance. A second aim is to give recommendations for their development of new and existing recycling centres and to discuss implications for the future design and organisation. Several opportunities for improvement of recycling centres were identified, such as design, layout, ease with which users could sort their waste, the work environment, conflicting needs and goals within the industry, and industrialisation. Combining all results from the research, which consisted of different disciplinary aspects, made it possible to analyse and elucidate their interrelations. Waste sorting quality was recognized as the most prominent improvement field in the recycling centre system. The research identified the importance of involving stakeholders with different perspectives when planning a recycling centre in order to get functionality and high performance. Practical proposals of how to plan and build recycling centres are given in a detailed checklist. (C) 2016 Elsevier Ltd. All rights reserved.

  • 32.
    Falconi, Valentina
    et al.
    Politecnico di Milano.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Colledani, Marcello
    Politecnico di Milano.
    Copani, Giacomo
    Institute of Industrial Technologies and Automation, CNR, Italy.
    Key success factors for implementing Upgrading Remanufacturing2017Ingår i: Proceedings of International Conference on Remanufacturing (ICoR-17), 2017, s. 33-46Konferensbidrag (Refereegranskat)
    Abstract [en]

    Increasing volume of waste in Europe, reduced availability of critical primary resources and new emerging trends towards “green” products push European manufacturers towards the implementation of ‘circular economy’. Product upgrading, i.e. the process of providing new functionalities to products through collection, disassembly/substitution and remanufacturing, could represent an effective solution to support the transition to circular economy. However, economic and environmental sustainability, legislation boundaries, industrial benefits and social impact of design for upgradability and upgrading remanufacturing are still debated in many sectors, and companies still perceive high risks in this transition.

     

    The aim of the paper is to clarify the key success factors for companies that have the willingness to include upgrading remanufacturing in their businesses. An emphasis is placed on how the application of new service-oriented business models for product upgrade and design for remanufacturing can support this implementation and bring high value-added to circular economy businesses.

     

    The methodology used to reach the aim of the paper was to map existing business approaches through a literature review focused on the existing upgrading strategies. Next, a study of real existing case studies of product upgrading was developed. Within this step, the identification of common success factors and a favourable scenario for the implementation of upgrading remanufacturing was conducted.

  • 33.
    Farid, Amro M.
    et al.
    Masdar Institute of Science & Technology, Masdar City, Abu Dhabi, UAE.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    An Axiomatic Design of a Multi-Agent Reconfigurable Manufacturing System Architecture2014Ingår i: Proceedings of ICAD2014 The Eighth International Conference on Axiomatic Design Campus de Caparica – September 24-26, 2014 / [ed] António M. Gonçalves-Coelho, Miguel Cavique and António Mourão, 2014, s. 51-58Konferensbidrag (Refereegranskat)
    Abstract [en]

    In recent years, the fields of reconfigurable manufacturing systems, holonic manufacturing systems, and multi-agent systems have made technological advances to support the ready reconfiguration of automated manufacturing systems.  While these technological advances have demonstrated robust operation and been qualitatively successful in achieving reconfigurability, their ultimate industrial adoption remains limited.  Amongst the barriers to adoption has been the relative absence of formal and quantitative multi-agent system design methodologies based upon reconfigurability measurement.  Hence, it is not clear 1.) the degree to which these designs have achieved their intended level of reconfigurability 2.) which systems are indeed quantitatively more reconfigurable and 3.) how these designs may overcome their design limitations to achieve greater reconfigurability in subsequent design iterations.  To our knowledge, this paper is the first multi-agent system reference architecture for reconfigurable manufacturing systems driven by a quantitative and formal design approach.  It is rooted in an established engineering design methodology called axiomatic design for large flexible engineering systems and draws upon design principles distilled from prior works on reconfigurability measurement.  The resulting architecture is written in terms of the mathematical description used in reconfigurability measurement which straightforwardly allows instantiation for system-specific application.

  • 34.
    Farid, Amro M.
    et al.
    Dartmouth Coll, NH 03755 USA; MIT, MA 02139 USA.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    An Axiomatic Design of a Multiagent Reconfigurable Mechatronic System Architecture2015Ingår i: IEEE Transactions on Industrial Informatics, ISSN 1551-3203, E-ISSN 1941-0050, Vol. 11, nr 5, s. 1142-1155Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In recent years, the fields of reconfigurable manufacturing systems, holonic manufacturing systems, and multiagent systems have made technological advances to support the ready reconfiguration of automated manufacturing systems. While these technological advances have demonstrated robust operation and been qualitatively successful in achieving reconfigurability, their ultimate industrial adoption remains limited. Among the barriers to adoption has been the relative absence of formal and quantitative multiagent system design methodologies based on reconfigurability measurement. Hence, it is not clear that the degree to which these designs have achieved their intended level of reconfigurability, which systems are indeed quantitatively more reconfigurable, and how these designs may overcome their design limitations to achieve greater reconfigurability in subsequent design iterations. To our knowledge, this paper is the first multiagent system reference architecture for reconfigurable manufacturing systems driven by a quantitative and formal design approach. It is rooted in an established engineering design methodology called axiomatic design for large flexible engineering systems and draws upon design principles distilled from prior works on reconfigurability measurement. The resulting architecture is written in terms of the mathematical description used in reconfigurability measurement, which straightforwardly allows instantiation for system-specific application.

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  • 35.
    Ferreira, Joao Dias
    et al.
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Akillioglu, Hakan
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Neves, Pedro
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Maffei, Antonio
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Characterization of an Agile Bio-inspired Shop-Floor2014Ingår i: Proceedings2014 12th IEEE International Conference on Industrial Informatics (INDIN), Porto Alegre, RS, Brazil 27-30 July, 2014, IEEE conference proceedings, 2014, s. 404-410Konferensbidrag (Refereegranskat)
    Abstract [en]

    Sustainability is currently one of the biggest challenges and driver of manufacturing industry. Nevertheless, with the decrease of product life cycles, the consumption of raw materials as well as the obsolescence of production systems increases. In this sense, agile shop-floors that enact companies with the ability to quickly reconfigure their shop-floors by deploying or removing modules are the key for sustainable industrial development. This paper attempts to characterize an innovative approach that relies on bio-inspired concepts as the main control mechanism, in order to foster sustainability by attaining the necessary shop-flooragility. Furthermore an experimental setup is presented and the results are analysed, in order to understand the influence and impact of the main properties that characterize the approach towards the system performance.

  • 36.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Malm, Anna
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten. Saab Aeronautics, Linköping, Sweden.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    What are the differences between related offset and outsourcing?: A case study of a related offset business at Saab2016Ingår i: International Journal of Technology Transfer and Commercialisation, ISSN 1470-6075, E-ISSN 1741-5284, Vol. 14, nr 2, s. 132-149Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Recently, offset contracts have become more complex. For the seller to carry through and review the effects and the demands of an offset contract, they need a framework.The paper identifies five main differences between outsourcing and related offset, which are translated into activities to be included in a suggested related offset framework. The paper is based on an in-depth case study of a related offset business at Saab, a Swedish military aircraft producer. The analysis compared the studied case with an existing outsourcing process identified in literature. The paper contributes by providing an overview of the activities taking place during a related offset process and showing the effect of the different hierarchical levels involved in the process on the efficiency of the fulfilment of the offset business. This paper is based on a single case study, and the suggested differences should be verified through further case studies.

  • 37.
    Fuglås, Jonas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Lindgren, Amund
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Logistik- och kvalitetsutveckling.
    Digitalization strategy for Scania Cab Assembly2018Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    With changing market demands such as individualization, volatility and sustainability, the current manufacturing environment at Scania is subject to an increasing need for change. This, together with the availability of more advanced technology and digitalization has sparked the fourth industrial revolution. It has been named Industry 4.0 and considers digitalization in a manufacturing environment. As a result, the purpose of this thesis is to outline the potential of increased digitalization for logistics and manufacturing at Scania Oskarshamn. This will be done by developing a digitalization strategy that encapsulates the core of Industry 4.0 and a roadmap to guide Scania in their development towards a future digitalized manufacturing environment. The study will consider two core functions of Industry 4.0 as the cornerstones of digitalization; consciousness and interoperability. Consciousness focuses on the level of digitalization within the system. With interoperability, integration throughout the whole supply chain and how it relates to the manufacturing environment. As a result, the study is separated into three main parts: Scania today, Scania 2030 and the gap in-between. For all three parts, three areas of focus will be the basis for the analysis. First, the level of digitalization will be analyzed. This is done in regards to the first core function, consciousness. Second, the level of process maturity will be analyzed. This is done in regards to the second core function, interoperability. Third, synergies between logistics and manufacturing will be analyzed. From the conducted analysis of the current state at Scania, the 2030 scenario and the gap inbetween, the digitalization strategy for Scania focuses on the two identified functions. Three key steps has been developed for each function.

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  • 38.
    Gabela, Asmir
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Automatiserad monteringscell för tillverkning av adapterringar i kompositmaterial2013Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Detta examensarbete är en del av ett forskningsprojekt som är ett samarbete mellan RUAG Space och Linköpings Universitet. RUAG Space är ett företag inom rymdindustrin som tillverkar delar till satelliter och bärraketer. För detta examensarbete kommer enbart adapter - och separationssystemet att beröras. Vid en uppskjutning av satelliter är det viktigt att tänka på att vikten är så låg som möjligt. Därför ville företaget att en ny produkt skulle tas fram genom att använda kompositmaterial. Företaget tar fram komponenten medan examensarbetets fokus är tillverkningen av den.

    Produkten består av kolfiberformade laminatblock som limmas ihop för att skapa ett cirkelbågeformat segment. Eftersom flera block limmas ihop är det en tidskrävande tillverkningsprocess. Därför beslutade företaget att ett koncept för automatiserad monteringscell skulle kunna tas fram. Då examensarbetet är tidsbestämt angås det att ett virtuellt automatiserat monteringskoncept skulle räcka.

    I detta examensarbete har ett stort fokus lagts på konceptgenereringen som har tillämpats för att hitta lämpliga koncept för problemet. Konceptgenereringen delades i tre huvudfunktioner som var robot, fixtur-och limapplicering samt gripdon. Det visade sig att konstruktionen av fixturen som gjordes parallellt med limappliceringen var examensarbetes viktigaste del. Därför lades stor del av examensarbetes tid åt att framta lämplig fixtur - och limningskoncept. För att kunna avgöra vilket fixturkoncept som är mest lämplig användes en konceptvalsmetod.

    När ett fixturkoncept och dess limapplicering hade valts kunde resterande funktioner väljas utifrån fixturenskoncepts geometri och funktion. Det påvisades att en 6 axlar robot var den mest lämpade för monteringscellen medan det mest lämpade gripdonet var klämmande. Efter att alla huvudfunktioner hade valts kunde en processlayout tas fram som sedan användes som stöd vid programmering av roboten. Geometrisimuleringen består av att roboten hämtar blocken som sedan går igenom olika mellanliggande stationer innan det placeras i fixturkonceptet. Processen avslutas med en liminjicering i fixturen.

    Det har visat sig att det lättaste sättet att utforma ett segment har varit genom att fixturkonceptet har en cirkelbågeformad geometri. Den slutgiltiga geometrisimuleringen visade att det går att automatisera monteringscellen.

  • 39.
    Gåhlin, Fredrik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Smith Siljestrand, Jakob
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Effektivisering av omställningsprocesser på ETP Transmission AB: En SMED-analys på hylstillverkning i svarv- och fräsmaskiner2021Självständigt arbete på grundnivå (högskoleexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Det här projektet har under våren 2021 utförts som ett examensarbete på uppdrag av ETP Transmission AB. Företaget är beläget i Linköping och producerar hydrauliska axel-/navförband till flera olika marknader och användningsområden. Enkelheten att montera och applicera samt deras höga kvalitet är något som utmärker produkterna. 

    Syftet var att undersöka och utarbeta förbättringsförslag för företagets omställningsprocesser, framför allt vid lågvolymstillverkning. Målet var att försöka reducera ställtiden med 25–50%. För att uppnå det användes metoden Single Minute Exchange of Die (SMED) som är ett verktyg för att reducera ställtider. Valet av SMED gjordes efter en litteraturstudie där metoden visat goda resultat i liknande projekt.

    Nuläget analyserades med videoupptagning, spaghettidiagram och intervjuer med anställda. Det filmade materialet bearbetades i programvaran AviX, där omställningsarbetet kunde brytas ner i operationer och sorteras som inre eller yttre ställ. De största orsakerna till de nuvarande ställtiderna var verktygsbyten inklusive kalibrering samt programskrivning för nya produkter under omställningsprocessen.

    Med kunskap från teorin och framtagandet av nulägesanalysen utarbetades förbättringsförslag. De olika förslagens styrkor och svagheter analyseras samt vilken trolig effekt de skulle ha vid ett implementerande. För att tydligare illustrera förbättringsförslagens förväntade effekt samt belysa den arbetsinsats som krävs för att implementera dem, gjordes en PICK-analys.

    Resultatet visade att den enskilt bästa lösningen var att fokusera på samkörning av produkter med liknande verktygsuppsättning. Den teoretiska förbättringen för ETP Transmission AB:s mest sålda produkt var en ställtidsreducering med ca 30%. Ett ännu bättre teoretiskt resultat erhölls då förbättringsförslagen kombinerades. För produktgruppen Express gav en sådan kombinationslösning en teoretisk reducering på ca 47%. 

    Slutligen belyser rapporten vikten av att jobba med Lean och mäta mer i produktionen. 

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  • 40.
    Hochwallner, Martin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    The Gaits of Linear Incremental Hydraulic Actuators: Digital and mixed mode hydraulic/mechanical motion2019Ingår i: PROCEEDINGS The 10th Workshop on DIGITAL FLUID POWER: DFP19, Linz, 2019Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Linear Incremental Hydraulic Actuators are a class of actuators consisting of one or more double-acting cylinders with are detachable from a common piston rod. The actuator works in a kind of rope-climbing motion. The cylinders engage to the rod, drive the load, disengage and retract. The various patterns, how these base actions of the realized cylinders are concatenated form the gaits of Linear Incremental Hydraulic Actuators. Depending on the gait the base actions are realized digital or continuous. For example, in the gait Smooth Motion engaging / disengaging is realized digital and the driving / retraction continuous. Other gaits may be realized fully digital. This contribution presents the concept of the Linear Incremental Hydraulic Actuator, an overview over various gaits, and how they can be combined to form advantages in applications. Advantages of Linear Incremental Hydraulic Actuators are or may be lower resource utilization and environmental impact, applicable for long or even infinite stroke, and simple integration.

  • 41.
    Hochwallner, Martin
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Fluida och mekatroniska system. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Pinto, Lie
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Tekniska fakulteten.
    Krus, Petter
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Fluida och mekatroniska system. Linköpings universitet, Tekniska fakulteten.
    Tracking Control for High-Performance Motion of a Hydraulic Infinite Linear Actuator2018Ingår i: IEEE/ASME transactions on mechatronics, ISSN 1083-4435, E-ISSN 1941-014X, Vol. 23, nr 6, s. 2782-2793Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The concept of the hydraulic infinite linear actuator consists of two double-acting cylinders with hydraulically detachable pistons driving a common rod. Alternatingly, one cylinder engages and drives the load, whereas the other retracts; the actuator, thus, works in a kind of rope-climbing motion. The actuator has three degrees of freedom, which are temporarily coupled compared with one in a conventional cylinder. Hence, the actuator is a hybrid system with both continuous and discrete states and control inputs. This paper presents a tracking control problem and a solution for high-performance motion, which is interpreted as utilizing the hardware limits in the sense of velocity, accuracy, smoothness, and usability. The concept is demonstrated by simulation for the case of a rest-to-rest motion, but the intended use cases also include arbitrary trajectories.

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  • 42.
    Jensen, Jonas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Nilsson, Sara
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    DFM/A-metod för integrerade strukturdelar i kolfiberkomposit: Vidareutveckling av metodik för SAAB Aerostructures2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Kolfiberkompositer är ett av de materialsom utvecklas snabbast just nu. Analogt med att materialet blir billigare och börjar användas i större utsträckning av flygindustrin utvecklas också tillverkningsmetoder för att följa framstegen. Hur material och tillverkningsmetoder sätter krav och påverkar en produkts utformning och prestanda kan vara svårt att definiera. I detta examensarbete har en Design for Manufacturing och Assembly (DFM/A)-metod utvecklats för att under hela produktutvecklingsprocessen kunna ta hänsyn till produktionsaspekter. DFM/Ametoden är framtagen åt Saab Aerostructures med hänsyn till de material som används, deras existerande produktionsprocesser och den produktutvecklingsprocess som finns på företaget. Utifrån litteratur- och fallstudier har en DFM/A-metod som kallas Metod 2015 (M2015) utvecklats. Metoden innehåller en arbetsprocess, konstruktionsriktlinjer samt stödjande DFM/Averktyg. Genom att i hela utvecklingsprocessen ta hänsyn till produktionsaspekter är detta arbetssätt anpassat för att underlätta utveckling av kolfiberkompositkomponenter på Saab. Utöver själva metoden i sig finns allt material som behövs för användning av M2015 sammanställt i en manual som i första hand riktar sig till konstruktören. Genom att skapa en bättre förståelse för produktionsaspekterna hos en konstruktion och tillhandahålla rätt verktyg kan DFM/A-metoden bidra till flera positiva effekter. Användandet av M2015 bör leda till produkter av kolfiberkomposit som är lättare att tillverka vilket i sin tur också bör minska onödiga kostnader, ge högre kvalitet och kortare ledtider. Införandet ställer dock också krav på Saab för att dessa målsättningar ska kunna uppnås.

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    DFM/A-metod för integrerade strukturdelar i kolfiberkomposit: Vidareutveckling av metodik för SAAB Aerostructures
  • 43.
    Johan, Eklund
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Automation in Remanufacturing: Robots flexibility and usage2020Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
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  • 44.
    Johansson, Glenn
    et al.
    Jonköping University, Sweden; Malardalen University, Sweden.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Lean and green product development: two sides of the same coin?2014Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 85, s. 104-121Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper compares and contrasts the lean product development (LPD) and green product development (GPD) concepts through a systematic literature review including 102 journal publications. The review resulted in 14 findings that were organised according to four dimensions: general, process, people and tools/techniques. A number of similarities between the concepts were found. For example, implementation of both concepts calls for a systems perspective where the dimensions of process-people-tools/techniques are linked holistically. Differences between the LPD and GPD concepts lie in: their goal and focus, value construct, process structure, performance metrics, and tools/techniques used. The findings do not unambiguously support that "green thinking is thinking lean" and consequently it cannot be argued that LPD and GPD are two sides of the same coin, meaning that LPD automatically leads to greener products or that GPD ensures improvements and efficiency in the product development process. However, it is reasonable to conclude that LPD and GPD belong to the same "currency". That is, the concepts share a number of similarities that indicate a synergistic relationship. This synergistic relationship has been accentuated by a nine propositions where the potential for cross-field learning is shown.

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  • 45.
    Johansson, Glenn
    et al.
    Lund University.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Wiktorsson, Magnus
    KTH.
    Sustainable manufacturing2019 (uppl. 1)Bok (Övrigt vetenskapligt)
    Abstract [en]

    The transition to more sustainable manufacturing is urgently needed. We need to produce with radically less use of energy, virgin material and other resources. As a response to those needs, sustainable manufacturing has emerged as a concept and practise with the underlaying goal that manufacturing shall preserve resources, still contributing to economic growth and human welfare. The manufacturing industry plays a central role in addressing the UN’s global sustainable development goals.

    Sustainable Manufacturing focuses on development and operations of manufacturing systems and processes, with manufacturing’s environmental impacts in focus. The chapters are organised from a life cycle perspective bringing up topics and showing how a manufacturing company can address sustainability issues in each life cycle stage.

    This book is designed to be an introductory textbook applicable for students in higher education and for industrial practitioners, seeking an overview of sustainable manufacturing. It contains nine chapters which are easy to digest and include numerous examples of how to implement sustainable manufacturing in practice.

  • 46.
    Johansson, Ricard
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Monteringsinstruktioner: innehåll, framtagning och presentation2014Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Instruktioner har syftet att förmedla ett arbetssätt eller utförande av en uppgift som användaren sen tidigare inte är bekant med. För att instruktionen ska vara framgångsrik krävs dock att den utformas på ett sätt som gör den enkel att använda och att tolka korrekt. Större efterfrågan på kundanpassning och krav på flexibilitet gör att tillverkande företag i allt större omfattning behöver effektiva metoder för att ta fram instruktioner.

    På uppdrag av PartnerTech i Åtvidaberg genomfördes under vårterminen 2014 ett examensarbete inriktat mot att underlätta framtagning och revision av instruktioner. Vilka presentationsformer som bäst stödjer användaren var också del av det huvudsakliga målet. Utöver det önskades även en metod för att kategorisera produkter efter monteringskomplexitet, vilket skulle underlätta fördelning av personal. PartnerTech är en kontraktstillverkare som ständigt ställs inför nya produkter och produktionsscenarion, vilket medför löpande behov av nya instruktioner. Bakgrunden till initiativet för projektet ligger i att den nuvarande metoden inte upplevs som tillräckligt effektiv och att kunskap från vetenskapliga studier saknas.

    Examensarbetet har utförts av en student vid det maskintekniska programmet på Linköpings tekniska högskola. Projektet inleddes med en studie av nuläget och forskningsresultaten inom de berörda områdena. Därefter utvärderades mjukvaran SolidWorks Composer för att se vilka fördelar den skulle kunna bidra till, jämfört med det nuvarande arbetssättet. Ett förslag till en layout för en alternativ form av instruktion utarbetades utifrån fynden under litteraturstudien, vilken senare testades på verkliga produkter. Parallellt utvecklades en metod för att kategorisera produkterna som produceras i Åtvidaberg.

    Projektet resulterade i en alternativ layout för instruktionerna och ett förslag till ny presentationsmetod. Som framtagningsverktyg föreslås Microsoft Powerpoint, vilket använts under projektet och visat på flera fördelar mot nuvarande program. Istället för att som idag använda utskrivna papperskopior av instruktionerna föreslås presentation via bildskärmar i form av ett bildspel. Utvärderingen av SolidWorks Composer visade att det finns potential för att effektivisera framtagningen av bilder för instruktionerna, förutsatt att ett antal kriterier uppfylls. Metoden för kategorisering av produkterna resulterade i en checklista, baserad i huvudsak på ja/nej-frågor.

    Ladda ner fulltext (pdf)
    Examensarbete om Monteringsinstruktioner
  • 47. Beställ onlineKöp publikationen >>
    Jonsson, Marie
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    On Manufacturing Technology as an Enabler of Flexibility: Affordable Reconfigurable Tooling and Force-Controlled Robotics2013Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    In order to survive in today’s global market many manufacturing companies seek flexibility to reduce product lead times and meet changing market demands. Manufacturing equipment forms the base of the production system and manufacturing technology with the capability to adapt to any changes in prerequisites is thus a key enabler of flexibility. Industrial robots and fixtures are common in all types of manufacturing. Robots are versatile re-programmable units capable of performing many tasks, such as welding, part transfer, etc. Industrial robots have traditionally been unable to handle disturbances and lack of constraints of input. This has led to manual operations often being preferred to automation when some level of flexibility is needed. One way to enhance manufacturing equipment’s capability to handle unknown events is to integrate different kinds of sensors to gain more knowledge of the manufacturing environment. Force sensors, for example, can be used to close the feedback loop and, together with an adequate control system, enable the robot to react to force stimuli. This is useful in manufacturing applications like assembly and deburring, which have previously been difficult to automate.

    Fixtures are devices that hold and position parts during a manufacturing process. Traditionally many fixtures have been dedicated, i.e. designed for a specific part and purpose. This means that fixtures have not been able to handle different products in the same unit, thus hindering flexibility. Sensors, like measurement systems, can be used together with fixtures to de-couple the structure of the fixture from the accuracy, which is the traditional approach to fixturing. This reasoning forms the base of the Affordable Reconfigurable Tooling (ART) concept, developed at Linköping University. The ART concept aims at increasing flexibility in manufacturing, while ensuring affordability and efficiency.

    This thesis explores how common manufacturing equipment, like industrial robots and fixtures, combined with sensor input, can enhance flexibility in manufacturing. The research shows that force-controlled robots, reacting to force stimuli, produce consistent results in assembly of compliant structures and in complex deburring. Force control also makes the system more robust, as it is able to handle variance in the assembled and deburred parts which adds to system flexibility. It also lessens the need for accuracy in other equipment used, such as grippers and fixtures, and makes programming easier and safer. Force control would, however, benefit if parameter tuning was simplified in order to fit an industrial environment and if presented user information is tailored for the intended user.

    Using measurement sensors to build fixtures, new ART devices aimed at increased flexibility in fixtures have been developed. These devices reduce the resources needed for fixture build and reconfiguring between products and also open up for making fixtures more active in manufacturing and similar to robots, while still being affordable. ART also reduces resources needed for design, as shown by the developed design aid programs. ART also supports concurrent design, as fixture specifications may be finalized before the product specifications are fully set.

    The overall results indicate that the explored sensors in combination with today’s emerging technologies can give additional benefits for applications like assembly and deburring and for fixtures. Furthermore, it is shown that it is possible to increase flexibility on different levels in a manufacturing system by using sensors in combination with industrial robots and fixtures.

    Delarbeten
    1. Fixture design using Configurators
    Öppna denna publikation i ny flik eller fönster >>Fixture design using Configurators
    2008 (Engelska)Ingår i: Proceedings of the 2008 Swedish Production Symposium / [ed] Lindberg, B.; Stahre, J., 2008Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    Design and manufacture of fixtures are among one of the major cost drivers in product industrialization. Modular or reconfigurable fixture solutions that may be adapted to encompass a large variety of parts or products have been researched and employed in applications ranging from machining to assembly. These solutions have not only the potential to reduce fixture manufacturing cost, but they also render it possible for different solutions to facilitate and speed up actual design work. The process of designing fixtures today is complicated, time consuming and require long experience by the tool designer. In this paper we present the Configurator approach - add on programs to the CAD-software which aids the designer in the design process. The Configurators are semi-automated and interactive, designed to use in compliance with the ART-concept, a reconfigurable fixture concept for assembly applications. The Configurator approach has been tested on industrial cases and parts of the results are presented in this paper.

    Nyckelord
    Fixture design, Reconfigurable fixtures, Configurators
    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-63187 (URN)
    Konferens
    Swedish Production Symposium 2008, November 19-20, Stockholm, Sweden
    Projekt
    Flexa
    Tillgänglig från: 2010-12-13 Skapad: 2010-12-13 Senast uppdaterad: 2023-03-01Bibliografiskt granskad
    2. Development of a new flexible fixturing device for Affordable Reconfigurable Tooling
    Öppna denna publikation i ny flik eller fönster >>Development of a new flexible fixturing device for Affordable Reconfigurable Tooling
    2010 (Engelska)Ingår i: 3rd CIRP Conference on Assembly Technologies and Systems: Responsive, customer demand driven, adaptive assembly / [ed] Terje K. Lien, Trondheim: Tapir Akademisk Forlag, 2010, s. 103-108Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    To use thin wedges of metal to adjust fixtures, i.e shimming, has been a common approach to achieve desired position and tolerance. To build a fixture using shims is time-consuming and results in a fixture that is difficult to modify. The newly developed ART (Affordable Reconfigurable Tooling) concept addresses the need for flexible fixturing by means of reconfigurable supports that are set to desired position by guidance from an outer measuring system. The ART concept can be realized by means of several different reconfigurable devices, among these is the newly developed “Mini Flexapod”. This small 6 degree of freedom reconfigurable device was designed to eliminate shimming and therefore has a small working envelope of approximately 4x4x4 mm. The Mini Flexapod is a result of working with several manufacturing cases  described in this paper.

    Ort, förlag, år, upplaga, sidor
    Trondheim: Tapir Akademisk Forlag, 2010
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-63186 (URN)9788251926164 (ISBN)
    Konferens
    3rd CIRP Conference on Assembly Technologies and Systems (CATS2010), June 21-22, Trondheim, Norway
    Projekt
    Fixture, Fixturing, RMS, FMS, Tooling; Assembly technology
    Tillgänglig från: 2010-12-13 Skapad: 2010-12-13 Senast uppdaterad: 2023-03-01Bibliografiskt granskad
    3. Development of an automated reconfigurable device for affordable fixturing
    Öppna denna publikation i ny flik eller fönster >>Development of an automated reconfigurable device for affordable fixturing
    2011 (Engelska)Ingår i: Proceedings of the 21st International Conference on Production Research (ICPR2011), 31st July - 4th August, Stuttgart, Germany / [ed] D. Spath, R Ilg and T. Krause, 2011Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Abstract [en]

    Fixtures are used in manufacturing to hold and position products or workpieces. Linköping University has over a period of several years developed an approach to flexible fixturing that relies on an outer measuring system to ensure accuracy rather than the more common approaches of high internal accuracy or a built-in chain of tolerances. The Linköping system fuses modularity, a rebuildable framework, with reconfigurability, through the means of adjustable devices. To address the need for speed in reconfiguration an automated approach has been developed as a proof-ofconcept. The system consists of electrical motors attached to the legs of the Flexapod 6, a PC, controller cards and an external measuring system. The measuring system feeds information to the PC that is utilized to calculate desired leg length using a Visual Basic program that communicates with CATIA V5. This program then sets signals to the motor controller cards which run the actuators. Due to the motors used the accuracy achieved are in the range of +/-0.15 mm but this may be enhanced with other types of motors developed for higher strengthrather than speed. The system can be further developed by having the actuators as the actual legs of the Flexapod, making it a cheaper Hexapod robot. The paper presents the automated Flexapod 6 in the current system along with possible further development.

    Nyckelord
    Tooling, Hexapod, Reconfigurable, Manufacturing, RMS
    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-88172 (URN)3-8396-0293-9 (ISBN)978-3-8396-0293-5 (ISBN)
    Konferens
    21st International Conference on Production Research (ICPR2011), Innovation in Product and Production, 31st July - 4th August, Stuttgart, Germany
    Anmärkning

    Published in CD-ROM.

    Tillgänglig från: 2013-01-30 Skapad: 2013-01-30 Senast uppdaterad: 2023-03-01Bibliografiskt granskad
    4. Aspects of reconfigurable and flexible fixtures
    Öppna denna publikation i ny flik eller fönster >>Aspects of reconfigurable and flexible fixtures
    2010 (Engelska)Ingår i: Production Engineering, ISSN 0944-6524, Vol. 4, nr 4, s. 333-339Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    The design and manufacture of fixtures and other dedicated tooling for positioning of workpieces are among the major cost drivers in product industrialization. This has spurred research and commercial interest towards other fixturing solutions like reconfigurable fixtures, with the ability to be changed, or  reconfigured , to suit different parts and products. When reconfiguring, the product interface not only has to be moved but moved to a desired position and orientation. Several different approaches have been used to move and position these devices, all with their own advantages and disadvantages. This article presents different methods used to position and reconfigure flexible fixture devices using a parallel kinematic device as a case. Discussing the different ways to reconfigure a flexible device, the article aims to arrange the techniques according to their key features.

    Ort, förlag, år, upplaga, sidor
    Heidelberg: Springer Berlin, 2010
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-63174 (URN)10.1007/s11740-010-0256-z (DOI)
    Projekt
    KooFixProFlexaFlexa
    Tillgänglig från: 2010-12-13 Skapad: 2010-12-13 Senast uppdaterad: 2023-03-01
    5. Force Controlled Assembly of a Compliant Rib
    Öppna denna publikation i ny flik eller fönster >>Force Controlled Assembly of a Compliant Rib
    2011 (Engelska)Ingår i: Proceedings of SEA AeroTech Congress and Exhibition 2011, 18th-21st October, Toulouse, France, 2011Konferensbidrag, Publicerat paper (Refereegranskat)
    Abstract [en]

    Automation in aerospace industry is often in the form of dedicated solutions and focused on processes like drilling, riveting etc. The common industrial robot has due to limitations in positional accuracy and stiffness often been unsuitable for aerospace manufacturing. One major cost driver in aircraft manufacturing is manual assembly and the bespoke tooling needed. Assembly tasks frequently involve setting relations between parts rather than a global need for accuracy. This makes assembly a suitable process for the use of force control. With force control a robot equipped with needed software and hardware, searches for desired force rather than for a position. To test the usefulness of force control for aircraft assembly an experimental case aligning a compliant rib to multiple surfaces was designed and executed. The system used consisted of a standard ABB robot and an open controller and the assembly sequence was made up of several steps in order to achieve final position. The result shows that the process is robust and repetitive and has the potential to reduce the need for bespoke jigs and fixtures.

    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-88173 (URN)10.4271/2011-01-2734 (DOI)
    Konferens
    SEA AeroTech Congress and Exhibition 2011, 18th-21st October, Toulouse, France
    Tillgänglig från: 2013-01-30 Skapad: 2013-01-30 Senast uppdaterad: 2023-03-01Bibliografiskt granskad
    6. On force control for assembly and deburring of castings
    Öppna denna publikation i ny flik eller fönster >>On force control for assembly and deburring of castings
    Visa övriga...
    2013 (Engelska)Ingår i: Production Engineering, ISSN 0944-6524, Vol. 7, nr 4, s. 351-360Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Traditional industrial robots have problems interacting with an uncalibrated, ill-dened environment where part geometry and position may vary. Active force control technology has therefore been suggested as a solution to add the extra sensory dimension needed to handle manufacturing tasks like assembly and deburring. The technology is proposed to give increased exibility compared to other solutions and force control systems are available commercially. Active force control installations however, are is still uncommon in industry. This paper presents two cases of force control applications; assembly of a compliant carbon ber structure and deburring/cleaning of iron castings. Based on these two cases, some issues are raised on how the technology can be further developed to t the industrial setting, and the proposed benets are re-examined and refined. The two cases show that programming, parameter setting and ease of use are critical components in lowering the industrial threshold, together with increased possibilities of application-specic compensation and filtering. Force control does however, show great potential in increasing the boundaries for variance in product and equipment like grippers and xtures as well as decreasing the need for calibration of for example virtual models used for programming compared to traditional automated solutions.

    Ort, förlag, år, upplaga, sidor
    Springer, 2013
    Nyckelord
    Industrial robotics Machining Debur- ring Force Control Assembly
    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-88174 (URN)10.1007/s11740-013-0459-1 (DOI)
    Tillgänglig från: 2013-01-30 Skapad: 2013-01-30 Senast uppdaterad: 2023-03-01Bibliografiskt granskad
    7. On emerging manufacturing technology as enablers of Lean
    Öppna denna publikation i ny flik eller fönster >>On emerging manufacturing technology as enablers of Lean
    (Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    Purpose - This paper discusses the impact of emerging automation technologies on the reduction of waste/muda in Lean manufacturing. Two industrial cases are used to highlight the increasing complexity of investment decisions and technology management.

    Design/methodology/approach - The 7 wastes are mapped along with their drivers in an automated manufacturing cell. Using two industrial cases; non-contact robotized scanning of car structures and force control de-burring, as illustrative examples their impact on drivers and waste reduction is established.

    Findings - Emerging technology has a high potential for reducing waste, not only on a cell level but also up-, and downstream the actual manufacturing process, for example on programming efforts. However, this increases the complexity of how technology impacts waste, and to what extent and scope.

    Research limitations/implications - New models for planning of manufacturing cells have to be researched that consider the possible impact of technology solutions to a wide aspect of the manufacturing organization.

    Practical implications - The identified drivers of waste in automation along with the presented waste reducers can be used by industry practitioners as a tool to evaluate and design manufacturing cells.

    Originality/value - This paper links new automation technologies with the waste concept and discusses the issues of increasing complexity in manufacturing, which is valuable for researchers and practitioners in technology management. It also lists drivers and summarizes possible technical solutions for waste reduction.

    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-88176 (URN)
    Tillgänglig från: 2013-01-30 Skapad: 2013-01-30 Senast uppdaterad: 2023-03-01Bibliografiskt granskad
    Ladda ner fulltext (pdf)
    On Manufacturing Technology as an Enabler of Flexibility: Affordable Reconfigurable Tooling and Force-Controlled Robotics
    Ladda ner (pdf)
    omslag
  • 48.
    Jonsson, Marie
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    On emerging manufacturing technology as enablers of LeanManuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    Purpose - This paper discusses the impact of emerging automation technologies on the reduction of waste/muda in Lean manufacturing. Two industrial cases are used to highlight the increasing complexity of investment decisions and technology management.

    Design/methodology/approach - The 7 wastes are mapped along with their drivers in an automated manufacturing cell. Using two industrial cases; non-contact robotized scanning of car structures and force control de-burring, as illustrative examples their impact on drivers and waste reduction is established.

    Findings - Emerging technology has a high potential for reducing waste, not only on a cell level but also up-, and downstream the actual manufacturing process, for example on programming efforts. However, this increases the complexity of how technology impacts waste, and to what extent and scope.

    Research limitations/implications - New models for planning of manufacturing cells have to be researched that consider the possible impact of technology solutions to a wide aspect of the manufacturing organization.

    Practical implications - The identified drivers of waste in automation along with the presented waste reducers can be used by industry practitioners as a tool to evaluate and design manufacturing cells.

    Originality/value - This paper links new automation technologies with the waste concept and discusses the issues of increasing complexity in manufacturing, which is valuable for researchers and practitioners in technology management. It also lists drivers and summarizes possible technical solutions for waste reduction.

  • 49.
    Jonsson, Marie
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Murray, Tom
    Airbus UK, United Kingdom.
    Kihlman, Henrik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Tekniska högskolan.
    Development of an automated reconfigurable device for affordable fixturing2011Ingår i: Proceedings of the 21st International Conference on Production Research (ICPR2011), 31st July - 4th August, Stuttgart, Germany / [ed] D. Spath, R Ilg and T. Krause, 2011Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Fixtures are used in manufacturing to hold and position products or workpieces. Linköping University has over a period of several years developed an approach to flexible fixturing that relies on an outer measuring system to ensure accuracy rather than the more common approaches of high internal accuracy or a built-in chain of tolerances. The Linköping system fuses modularity, a rebuildable framework, with reconfigurability, through the means of adjustable devices. To address the need for speed in reconfiguration an automated approach has been developed as a proof-ofconcept. The system consists of electrical motors attached to the legs of the Flexapod 6, a PC, controller cards and an external measuring system. The measuring system feeds information to the PC that is utilized to calculate desired leg length using a Visual Basic program that communicates with CATIA V5. This program then sets signals to the motor controller cards which run the actuators. Due to the motors used the accuracy achieved are in the range of +/-0.15 mm but this may be enhanced with other types of motors developed for higher strengthrather than speed. The system can be further developed by having the actuators as the actual legs of the Flexapod, making it a cheaper Hexapod robot. The paper presents the automated Flexapod 6 in the current system along with possible further development.

  • 50.
    Jonsson, Marie
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Stolt, Andreas
    Lund University, Sweden.
    Murray, Tom
    Airbus UK, United Kingdom.
    Nilsson, Klas
    Lund University, Sweden.
    Force Controlled Assembly of a Compliant Rib2011Ingår i: Proceedings of SEA AeroTech Congress and Exhibition 2011, 18th-21st October, Toulouse, France, 2011Konferensbidrag (Refereegranskat)
    Abstract [en]

    Automation in aerospace industry is often in the form of dedicated solutions and focused on processes like drilling, riveting etc. The common industrial robot has due to limitations in positional accuracy and stiffness often been unsuitable for aerospace manufacturing. One major cost driver in aircraft manufacturing is manual assembly and the bespoke tooling needed. Assembly tasks frequently involve setting relations between parts rather than a global need for accuracy. This makes assembly a suitable process for the use of force control. With force control a robot equipped with needed software and hardware, searches for desired force rather than for a position. To test the usefulness of force control for aircraft assembly an experimental case aligning a compliant rib to multiple surfaces was designed and executed. The system used consisted of a standard ABB robot and an open controller and the assembly sequence was made up of several steps in order to achieve final position. The result shows that the process is robust and repetitive and has the potential to reduce the need for bespoke jigs and fixtures.

1234 1 - 50 av 174
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