Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30172
Manufacturing Dispersions Based Simulation and Synthesis of Design Tolerances

Authors: Nassima Cheikh, Abdelmadjid Cheikh, Said Hamou

Abstract:

The objective of this work which is based on the approach of simultaneous engineering is to contribute to the development of a CIM tool for the synthesis of functional design dimensions expressed by average values and tolerance intervals. In this paper, the dispersions method known as the Δl method which proved reliable in the simulation of manufacturing dimensions is used to develop a methodology for the automation of the simulation. This methodology is constructed around three procedures. The first procedure executes the verification of the functional requirements by automatically extracting the functional dimension chains in the mechanical sub-assembly. Then a second procedure performs an optimization of the dispersions on the basis of unknown variables. The third procedure uses the optimized values of the dispersions to compute the optimized average values and tolerances of the functional dimensions in the chains. A statistical and cost based approach is integrated in the methodology in order to take account of the capabilities of the manufacturing processes and to distribute optimal values among the individual components of the chains.

Keywords: functional tolerances, manufacturing dispersions, simulation, CIM.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1071980

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1110

References:


[1] C. Marty, J. M. Linares, Industrialisation des Produits Mécaniques : Conception et Industrialisation. Paris : Publication Hermes, Tome 1, 1999.
[2] K. W. Chase and A. R. "Parkinson, A survey of research in the application of tolerance analysis to the design of mechanical assemblies," ADCATS, Report No. 91-1, Brigham Young University, 1991
[3] G. R. Tang, R. Kung, and J. Y. Chen, "Optimal allocation of process tolerances and stock removals," Int. J. of Production Research, Vol. 32, no 1, pp. 23-35, 1994.
[4] K. W. Chase, W. H. Greenwood, B. G. Loosli, and L. F. Hauglund, "Least cost allocation for mechanical assemblies with automated process selection," Manufacturing Review, Vol. 3, no 1, pp. 49-59, 1990.
[5] G. Zhang and M. Porchet, "Tolerance design in CIM, the state of the art," in Proc. of the International Symposium on Robotics, Mechatronics and Manufacturing, IMACS/SICE, 1992, pp. 1137-114.
[6] O. Bjorke, Computer Aided Tolerancing. NY: ASME Press, 2nd Ed., 1989.
[7] P. Bourdet, "Cha├«nes de cotes de fabrication, " Revue de l-Ingénieur et le Technicien de l-Enseignement Technique, no 191 pp.15-23, 1973.
[8] B. Anselmetti, Tolerancement : Cotation de Fabrication et Métrologie. Paris : Edition Lavoisier, Tome 3,2003.
[9] P. Bourdet, Chaînes de Cotes Unidirectionnelles. Paris: ENS Cachan, 2003.
[10] D. Duret, "Simulation de gamme d-usinage," Revue de l-Ingénieur et le Technicien de l-Enseignement Technique, no 229, pp. 34-37, 1981.
[11] S. Hamou, Contribution ├á l-optimization de la spécification des etats intermédiaires dans le processus de fabrication, PhD Thesis, Dept. Mech. Eng., Abou Bekr Belkaid University, Tlemcen, Algeria, 2004.
[12] S. Hamou, A. Cheikh, J. M. Linares, and A. Benamar, "Machining dispersions based procedures for computer aided process plan simulation," Int. J. Computer Integrated Manufacturing, Vol.17, no 2, pp. 141-150, 2004.
[13] N. Cheikh, Modélisation de l-optimization des tolérances fonctionnelles par la méthode des dispersions, M.S. thesis, Dept. Mech. Eng., Abou Bekr Belkaid Univ., Tlemcen, Algeria, 2005.
[14] J. Tinel and F. Dardy, Communiquer en Conception Mécanique : Coter- Tolérancer. Paris : Editions Foucher, 1991.
[15] 15] A. P. Peat, Cost Reduction Charts for Designers and Process Engineers. London: Machinary Pub Co., 1968.
[16] A. Cheikh, "Combined statistical optimization linear programming and mixed integer linear programming tolerance analysis and synthesis models," Les Annales Maghrébines de l-Ingénieur, Vol. 12, pp. 743-748, 1998.
[17] S. Hamou, A. Cheikh, J. -M. Linares, and A. Chikh Daho, "A stochastic concept for the optimization of manufacturing tolerances in computer aided process plan simulation," Int. J. Computer Integrated Manufacturing, Vol.19, no 7, pp. 663-675, 2006.
[18] K. G. Murty, Linear Programming. NY: John Willey & Son, 1983.