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Clamp Force Accuracy in Threaded Fastener Joints Using Different Torque Control Tightening Strategies
Atlas Copco Industrial Technique AB, Sweden; KTH Royal Institute, Sweden.
Atlas Copco Industrial Technique AB, Sweden; KTH Royal Institute, Sweden.
Atlas Copco Industrial Technique AB, Sweden.
Linköpings universitet, Institutionen för systemteknik, Fordonssystem. Linköpings universitet, Tekniska fakulteten. Atlas Copco Industrial Technique AB, Sweden.
2021 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The assembly of threaded fasteners may seem straightforward. However, there are many factors to consider to achieve quality tightened joints, including the joint material, threaded fastener, and coatings. Additionally, there are many assembly tool types and torque application strategies to choose from. This investigation studies the tightening speed dynamics when using torque as a control method. The clamp force obtained in the joint changes when tightening at high speed or when the speed varies greatly during tightening. This type of tightening is called highly dynamic. Highly dynamic torque control tightening strategies are studied, such as impact, pulse, and inertia-controlled methods, and compared with the continuous drive strategy, which is a standard dynamic torque tightening method. The clamp force and its scatter caused by the torque accuracy in the assembly tool type are investigated for the abovementioned torque application strategies. The study also focuses on the different results obtained from the International Organization for Standardization’s (ISO) 16047:2005 (Fasteners-Torque/clamp force testing) standard compared to a production-like setup. 

Ort, förlag, år, upplaga, sidor
SAE International , 2021. nr 2021, artikel-id 2021-01-5073
Serie
SAE Technical Papers, ISSN 0148-7191, E-ISSN 2688-3627 ; 2021-01-5073
Nyckelord [en]
Torque; Torque control, Application strategies; Control methods; Dynamic torque controls; Dynamic torques; International organization for standardizations; Threaded fasteners; Tightening speed; Torque accuracies, Fasteners
Nationell ämneskategori
Reglerteknik
Identifikatorer
URN: urn:nbn:se:liu:diva-178672DOI: 10.4271/2021-01-5073Scopus ID: 2-s2.0-85111364344OAI: oai:DiVA.org:liu-178672DiVA, id: diva2:1588228
Konferens
Conference of SAE 2021 Automotive Technical Papers, WONLYAUTO 2021 ; Conference Date: 1 January 2021; Conference Code:167687
Anmärkning

SAE Technical Paper 2021-01-5073

Tillgänglig från: 2021-08-26 Skapad: 2021-08-26 Senast uppdaterad: 2021-08-26

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Dressler, Nils

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