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When Manufacturing Capability Exceeds Control Capability: The Paradox of High Precision Products, or is it Possible to Assemble Functional Products out of Components we are Unable to Measure?

  • S. Koelemeijer Chollet
  • M. Braun
  • F. Bourgeois
  • J. Jacot
  • F. Chautems
Part of the IFIP — International Federation for Information Processing book series (IFIPAICT, volume 260)

Abstract

Sorting and mating is a very common practice in high precision manufacturing, as well in the watch industry, biomedical or automotive industry. This strategy helps to increase the assembly yield, but is costly and timeconsuming. The question is, when is it necessary to apply sorting and mating, and when can it by avoided without loss in product quality? We furthermore show in this paper that the measurement precision is often lower than that of manufacturing. New and more precise manufacturing equipment and assembly devices allow for narrower distributions, and this raises many questions: is it possible to stop sorting? how can we be sure of the quality of the components and of the products? A case study at the company MPS AG, manufacturer of miniature ball bearings, illustrates this trend. We propose another manufacturing and assembly strategies, and show what the conditions are that are necessary to permit this approach.

Keywords

Ball Bearing IEEE International Symposium Assembly Strategy Selective Assembly Tolerance Interval 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© International Federation for Information Processing 2008

Authors and Affiliations

  • S. Koelemeijer Chollet
    • 1
    • 2
  • M. Braun
    • 1
    • 2
  • F. Bourgeois
    • 1
    • 2
  • J. Jacot
    • 1
    • 2
  • F. Chautems
    • 3
  1. 1.Laboratoire de Production Microtechnique, Institut de Production et RobotiqueEcole Polytechnique Fédérale de LausanneSwitzerland
  2. 2.Laboratoire de Production Microtechnique EPFLLausanneSwitzerland
  3. 3.MPS AGBonfolSwitzerland

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