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  • 1.
    Wettrén, Freddie
    Linköping University, Department of Management and Engineering, Logistics & Quality Management.
    Systematisk bearbetning, kommunikation och visualisering av mätutfall vid koordinatmätning2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis is to develop a method of systematic visualization for coordinate measurements at Saab Aerostructures. The thesis begins with mapping the coordinate measuring process. After that, it is proposed to define key measurement points through quality standards as this will simplify the visualization of the measurements with a control chart through a Visual Management-system. 

    To stay in the forefront of the market and keep the relations with current customers, Saab wants to increase the quality of their products by reducing the amount of measurement deviations. The measurements are currently scarcely visualized to the employees. This is because of the complicated method which currently is being used to reflect which measurements that are deviating. The process of visualization should be definite and simple to use as this will lead to less deviations. Furthermore, it will contribute to continuous improvement for the process of measuring. 

    The methods used in this thesis include semi structured interviews, observations and studies of internal documents. These methods are then triangulated to be able to map the process in detail. However, no employees knew either the coordinate measuring process or the visualizing process by heart. This led to the author having to proceed with a Process Walk. The method helped map both the processes and through this, problems were identified in the process which would otherwise hinder the visualization of measurements. Moreover, a literature study was conducted of Quality Management Systems as these outline criteria for Saabs products. Visual Management-system was also studied with the likes of information boards as this fit Saab with their previous prerequisites of information boards. 

    From the mapping of today’s process, problems were identified that would hinder them from systematically visualize their coordinate measuring process. From the problems that were outlined, improvement suggestions were proposed. Firstly, it was conducted that too much data is hindering the transparency of the process. From Quality Standards it is proposed to clearly define key measurements points and document these. This is done through the means of a SIPOC and a FMEA. Furthermore, it is proposed to analyze which measurement data is to be saved as a major part of the data consists of irrelevant information. As the process of visualizing the coordinate measuring process was timed to 90 hours it was also proposed to clarify templates which systematically exports and sorts data in an Excel-format with the use of Saabs ERP-system, instead of converting from XML which is done today. These templates can then immediately be used by Excel to visualize the outcome of the coordinate measurements with the help of a Visual Management-system. The system makes use of bar diagrams to highlight which processes that are producing most deviations. The processes outcome is visualized in a control chart which enhances how the variation of the process is affecting the measurement outcome. The last improvement suggestion states that Saab should use the control chart as a way of stabilizing their processes as this will lead to qualitative processes where capability can be proven to their customers. 

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