Computer Aided Tolerancing Using Positioning Features

Author:

Anselmetti Bernard12,Mawussi Kwamivi34

Affiliation:

1. Laboratoire Universitaire de Recherche en Production Automatise´e, ENS de Cachan, 61, av du Ptd Wilson 94235 Cachan, France

2. IUT de Cachan, Universite´ Paris SUD, 9 Av de la Division Leclerc, 94234 Cachan Cedex, France

3. Laboratoire Universitaire de Recherche en Production Automatise´e, ENS de Cachan, 61, av du Pdt Wilson 94235 Cachan, France

4. IUT de Saint Denis, Universite´ Paris NORD, place du 8 Mai 1945, 93206 Saint Denis, France

Abstract

The quality of the interfaces between parts ensures the assembly requirements of a mechanism and the right positioning of functional surfaces. When defining a mechanism, a designer analyzes the failures generated by the geometrical defects of the junction surfaces between the parts. To formalize the design intents clearly, the method proposed, named TLIC, uses positioning tables of the parts to clearly indicate the set up surfaces associated as features and the preponderance order of the features. The requirements of assembly between parts and the tolerancing of the interfaces can then be generated automatically by defining the reference systems.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Graphics and Computer-Aided Design,Computer Science Applications,Software

Reference12 articles.

1. Linares, J. M., and Marty, C., 1993, “Tole´rancement par Groupe Fonctionnels,” 3eme Se´minaire International CIRP sur le Tole´rancement Ge´ome´trique, ENS Cachan, F.

2. Ballu, A., and Mathieu, L., 1998, “Choice of Functional Specifications Using Graphs Within the Framework of Education,” CIRP Computer Aided Tolerancing 6th Seminar, pp. 197, 206, Enschede, NL.

3. Tessendier, D., Couetard, Y., and Gerard, A., 1997, “Three-dimensional Functional Tolerancing with Proportional Assembly Clerance Volume (UPEL): Application to Setup Planning,” Proceedings of 5 CIRP seminar on Computer Aided Tolerancing, Toronto, Canada, pp. 113, 123.

4. Samper, S., and Giodano, M., 1996, “Models for Tolerancing Process by Considering Mechanism Flexibility,” Integrated Design and Manufacturing in Mechanical Engineering, pp. 349, 356, KLUWER Academic Publishers.

5. Clement, A., Rivier, A., Serre, P., and Valade, C., 1998, “The TTRS: 13 Constraints for Dimensioning and Tolerancing” Geometric Design Tolerancing: Theories, Standards and Applications, Chapman & All, pp. 122–131.

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