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New Designs for Submillimetric Press-Fitting

  • Ludovic Charvier
  • Fabien Bourgeois
  • Jacques Jacot
  • Grégoire Genolet
  • Hubert Lorenz
Part of the IFIP — International Federation for Information Processing book series (IFIPAICT, volume 260)

Abstract

Press-fitting is a very common assembly process used in many fields, especially in the watchmaking industry. It consists of introducing a shaft in a hole (also called receptor) with a certain value of tightening (or interference). However, this process is not straightforward and it is often observed that some assemblies do not manage to hold out the time and function they are meant to. In order to solve this problem, influent parameters had been searched and are now studied. The shape of the receptor has appeared as a critical one. Indeed, new machining processes have been developed this last decade and we are now able to make new designs which could cope perfectly with this application. The article will deal with the influence of the two main parameters involved in a press-fitting assembly: the maximal press-fitting force, measured axially; and the resistive torque exercised between the shaft and the receptor. The main purpose will be to find which kind of design allows the contact to become less stiff, which means less internal constraints. Thus, the tolerances, especially those of the receptor (they are less well controlled than those of the shaft) could be enlarged and this would be a great improvement for the industrial world.

Keywords

Contact Surface Axial Force Industrial World Internal Constraint Interference Range 
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.

References

  1. 1.
    E. Fortini, Dimensioning for Interchangeable Manufacture, Industrial Press (1967)Google Scholar
  2. 2.
    F. Bourgeois, Vers la Maîtrise de la Qualité des Assemblages de Précision (EPFL, Lausanne, 2007)Google Scholar

Copyright information

© International Federation for Information Processing 2008

Authors and Affiliations

  • Ludovic Charvier
    • 1
  • Fabien Bourgeois
    • 1
  • Jacques Jacot
    • 1
  • Grégoire Genolet
    • 2
  • Hubert Lorenz
    • 2
  1. 1.Laboratoire de Production Microtechnique, EPFLLausanneSwitzerland
  2. 2.Mimotec SASionSwitzerland

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