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Global Consistency of Tolerances pp 231–240Cite as

Two-Step Procedure for Robust Design Using CAT Technology

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Abstract

This paper describes how computer aided tolerancing (CAT) techniques can be used in a two-step procedure to increase geometrical assembly robustness.

In the first step, in geometry concept design, the general robustness of a concept is increased by minimizing the number of controlling parameters for a critical characteristic and by maximizing the general ability to suppress variation. This step agrees with design philosophies put forward by Suh and Taguchi and uses CAT techniques to analyze and improve general assembly robustness with respect to locator positions and variation directions.

In the second step, in detail design, tolerances are allocated with respect to general robustness, manufacturing capability and manufacturing cost. At this stage, the final variation of the overall product characteristics may be simulated and part tolerances may be adjusted with respect to assembly sensitivity and cost. If loss functions are available, the total quality level of a concept may be analyzed.

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Author information

Authors and Affiliations

  1. Mechanical and Vehicular Engineering, Chalmers University of Technology, S-41296, Göteborg, Sweden

    Lars Lindkvist Ph. D.

Authors
  1. Rikard Söderberg Ph. D.
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  2. Lars Lindkvist Ph. D.
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Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, University of Twente, Enschede, The Netherlands

    Fred van Houten  & Hubert Kals  & 

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© 1999 Springer Science+Business Media Dordrecht

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Söderberg, R., Lindkvist, L. (1999). Two-Step Procedure for Robust Design Using CAT Technology. In: van Houten, F., Kals, H. (eds) Global Consistency of Tolerances. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1705-2_24

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  • DOI: https://doi.org/10.1007/978-94-017-1705-2_24

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-5198-1

  • Online ISBN: 978-94-017-1705-2

  • eBook Packages: Springer Book Archive

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