Modeling Variation Propagation of Multi-Station Assembly Systems With Compliant Parts

Author:

Camelio Jaime1,Hu S. Jack1,Ceglarek Dariusz2

Affiliation:

1. Department of Mechanical Engineering, The University of Michigan, Ann Arbor, MI 48109

2. Department of Industrial Engineering, The University of Wisconsin, Madison, WI 53706

Abstract

Products made of compliant sheet metals are widely used in automotive, aerospace, appliance and electronics industries. One of the most important challenges for the assembly process with compliant parts is dimensional quality, which affects product functionality and performance. This paper develops a methodology to evaluate the dimensional variation propagation in a multi-station compliant assembly system based on linear mechanics and a state space representation. Three sources of variation: part variation, fixture variation and welding gun variation are analyzed. The proposed method is illustrated through a case study on an automotive body assembly process.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Reference23 articles.

1. Ceglarek, D., and Shi, J., 1995, “Dimensional Variation Reduction for Automotive Body Assembly,” Manufacturing Review, 8(2), pp. 139–154.

2. Hu, S. J. , 1997, “Stream-of-Variation Theory for Automotive Body Assemblies,” CIRP Ann., 46(1), pp. 1–6.

3. Takezawa, N. , 1980, “An Improved Method for Establishing the Process Wise Quality Standard,” Reports of Statistical and Applied Research, Japanese Union of Scientists and Engineers (JUSE), 27(3), September, pp. 63–76.

4. Shiu, B., Ceglarek, D., and Shi, J., 1997, “Flexible Beam-Based Modeling of Sheet Metal Assembly for Dimensional Control,” Transactions of NAMRI/SME, 25, pp. 49–54.

5. Liu, S. C., Hu, S. J., and Woo, T. C., 1996, “Tolerance Analysis for Sheet Metal Assemblies,” ASME J. Mech. Div., 118(1), pp. 62–67.

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