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  • 1201.
    Zeybrandt, Peggy
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Effektivisering och produktivitetsökning i produktionsflödet av Hammarhäftare på Isaberg Rapid AB2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Abstract

    The market’s demand to purchase more cost effective products is continuously increasing. The producers are forced to become more efficient and flexible with resources to produce high quality products at a low cost in order to maintain or increase market shares. With this in mind Isaberg Rapid AB is requesting a project to increase efficiency in the assembly cell of hammertackers. The company has found in Kaizen-events that there is a potential of efficiency improvements in the assembly group that has not been achieved.

    The objective with this paper is to identify the major factors that influence the efficiency in the assembly cell for hammertackers. At the same time the project is to generate data on new operation times, calculate the number of operators required in the cell and to implement standardized work instructions.

    The facts and data have been collected by discussions with operators, time studies and by filming the operation. A one week Kaizen-event with the operators was made, where the selected changes were implemented. The result of the changes in terms of efficiency and output were registered.

    The following basic questions are answered in the report.

    • What changes are required to increase efficiency?
    • What are the non-conformity reasons that prevent the group from reaching the production targets?
    • Is there a need for a different set up in the cell?

    In the Kaizen-event, a number of observations were made in the hammertacker group and the major wastes were identified. The largest wastes were identified to be that materials for packing were too far from the assembly cell, setting times for tool changes were long and that the operators’ workload was not in balance.

     A new layout was made to reduce the distance to packing materials. The height and setting of moulds were changed to get faster mould exchange. Operations were  introduced to the cell to get a better balance of the workload between operators.

    The observed interruptions have mainly been due to lack of different raw materials.

    There was no reason to modify the way work was carried out in the cell; never the less, some minor adjustments were made. The change with the biggest impact was to remind the operators of the factors that affect the productivity most.

    The number of produced products has increased by 21 %, which also gives the corresponding efficiency increase.

    The conclusion of this paper is that increased productivity is obtained by identifying and eliminating waste, increasing the participation of the operators and creating a standardized way of working.

  • 1202. Åkergren, Amanda
    Parametrize reinforcements for hoods in CATIA V52019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 1203. Åsa, Fasth
    et al.
    Lundholm, Thomas
    Stahre, Johan
    Dencker, Kerstin
    Mårtensson, Lena
    Bruch, Jessica
    Jönköping University, School of Engineering, JTH, Industrial Engineering and Management. Jönköping University, School of Engineering, JTH. Research area Industrial Engineering and Management.
    Designing proactive assembly systems: Criteria and interaction between automation, information, and competence2009In: Proceedings of the 42nd CIRP Conference on Manufacturing Systems, Grenoble, 2009Conference paper (Refereed)
    Abstract [en]

    Increasing customisation of products results in decreasing production batch sizes, especially in the final assembly. Industry must therefore increase their capability to handle smaller batches as well as radically decrease set up time between different product groups and new products. This paper suggests the need for further development, primarily addressing time parameters in dynamically changing assembly systems. We propose customer demands and decrease non value-adding tasks. In proactive assembly systems, the full and complementary potential of human operators and technical systems is utilised. Criteria for proactivity in assembly systems are reviewed from automation, information, and competence perspectives.

  • 1204.
    Ödlund, Martin
    Jönköping University, School of Engineering.
    Optimization Driven Development of Stringer to Leisure Boat2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The increasing demand for products of light weight and high performance to be produced and developed in shorter periods of times has put high pressure on the product development process. Much research is done in order to find ways on how to speed up this process at the same time as delivering products of higher quality to the customer. Much of the literature focuses on how important it is to “tear down the walls” between departments at a company by integrating as much different knowledge as early in the process as possible. Thereby, much of the costly problems found late in the process can be avoided leading to shorter development times and cost savings.

    Commonly companies use simulation software to verify their final designs before the products pass forward to prototyping and test production. In some cases products need to be redesigned and big changes of the product geometry might be necessary which often is very costly in such a late stage of the process.

    Eker Design in Fredrikstad, Norway, wants to investigate the potential of using simulation driven design in an early stage of the product development process. In order to make this investigation this exam work has been carried out on a real design case by the development of a new “stringer” totally from scratch. A stringer is what gives rise to the stiffness of the boat and is a structure mounted in-between the hull and the deck. The stringer was developed to the Hydrolift SX22 leisure boat by using simulations and topology optimization software as the driving force for the design. The research questions to be answered were:

    • Is it possible to develop a stringer through a design process based on topology optimization and simulation software with equal performance as the existing stringer?
    • How does the optimized result perform in comparison to the existing stringer?
    • Can any weight reduction be achieved with a new stringer design?

    In the end of the work the existing stringer and the new stringer design was compared and evaluated. The results showed that the new stringer with a weight reduction of 30% performed very well in comparison to the existing one. This proves that the topology optimization and simulation driven design process beneficially can be used in marine architecture. It has also proven to be an efficient method to lower the material usage and increase the strength of the stringer. 

  • 1205.
    Ölvander, J.
    et al.
    Linköping University, Sweden.
    Wever, R.
    Linköping University, Sweden.
    Johansson, Glenn
    Jönköping University, School of Engineering, JTH, Supply Chain and Operations Management. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Warell, A.
    Lund University, Sweden.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Rönnbäck, A. Ö.
    Luleå University of Technology, Sweden.
    Isaksson, O.
    Chalmers University of Technology, Sweden.
    Larsson, T.
    Blekinge Institute of Technology, Sweden.
    Steinert, M.
    Norwegian University of Science and Technology, Norway.
    Ekman, K.
    Aalto University, Finland.
    Hansen, P. K.
    Aalborg University, Denmark.
    Juuti, T.
    Tampere University of Technology, Finland.
    Malmqvist, J.
    Chalmers University of Technology, Sweden.
    Ritzén, S.
    Royal Institute of Technology, Sweden.
    Sæmundsson, R. J.
    University of Iceland, Iceland.
    Hansen, C. T.
    Technical University of Denmark, Denmark.
    Preface2018In: Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018, Linköping: Design Research Society, 2018Conference paper (Other (popular science, discussion, etc.))
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