Korean Journal of Computational Design and Engineering (한국CDE학회논문집)

Society for Computational Design and Engineering (한국CDE학회)
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Determination of Fixture Locations and Welding Points Using Tolerance Analysis of Compliant Assembly

변형 조립체 공차해석 기법을 이용한 판재 용접용 치구 및 응접 점의 위치결정

  • 이동열 (쌍용자동차 CAE팀) ;
  • 소현철 (홍익대학교 대학원 기계공학과) ;
  • 임현준 (홍익대학교 기계.시스템디자인 공학과) ;
  • 지해성 (홍익대학교 기계.시스템디자인 공학과)
  • Published : 2007.08.31
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Abstract

All manufactured parts and tooling have unavoidable variations from their nominal shapes. During assembly, compliant parts are further deformed by relatively rigid assembly tooling. Lack of Knowledge regarding variations and deformations often results in expensive problems. Most current computer-aided design systems are based on ideally sized, ideally located and rigid geometry. This paper proposes a model for the assembly of compliant, non-ideal part. We start by defining tolerance analysis as the process of simulation the variation of a product or a subassembly when given the tolerance of required parts. Analysis is then done by finite element analysis and using the material properties of the actual parts to be assembled. Using the result, estimate the weld process.

Keywords

References

  1. Chang, M. and Gossard, D. C., 'Modeling the Assembly of Compliant, Non-ideal Parts', Computer-Aided Design, XXIX (1997), pp. 701-708, 1997 https://doi.org/10.1016/S0010-4485(97)00017-1
  2. S. Charles Liu, S. Jack Hu, 'Compliant Assembly Variation Analysis Using Components Geometric Covariance', Preoceedings of the 2002 International Mechanical Engineering Conference and Exposition, New Orleans, LA, 2002
  3. Hu, S. J. and Wu, S. M., 'Identifying Sources of Variation in Automobile Body Assembly Using Principal Component Analysis', Transactions of NAMRI, XX (1992), pp. 311-316
  4. Creveling, C. M., Tolerance Design, Addison-Wesley, 1996
  5. S. Charles Liu, S. Jack Hu, 'Variation Simulation for Deformable Sheet Metal Assemblies Using Finite Element Methods', ASME Journal of Manufacturing Science and Engineering, Vol. 119, pp. 368-374, 1997 https://doi.org/10.1115/1.2831115
  6. 김국생, '용접 조립되는 변형체의 스프링 백 해석', 홍익대학교 석사학위논문, 2005
  7. Jaime A. Camelio, 'Modeling and Diagnosis of Dimensional Variation for Assembly Systems with Compliant Parts', Doctor of Philiosophy in the University of Michigan pp. 44-75, 2002
  8. L. Shelly Xie, Ching hseih, 'Clamping and Welding Sequence Optimization for Minimizing Cycle Time and Assembly Deformation', Int. J of Materials & Product Technology, Vol. 17, Nos 5/6, 2002
  9. Rearick, M. R., Hu, S. J. and Wu, S. M., 'Optimal Fixture Design for Deformable Sheet Metal Work-pieces', Society of Manufacturing Engineers; (1993), NAMRC XXI, Vol. 0000137562, pp. 407-412
  10. Cai, W., Hu, S. J. and Tuan, J. X., 'Deformable Sheet Metal Fixturing : Principle, Algorithms, and Simulation', Trans. ASME, J Manuf. Sci. Eng., Vol. 118, pp. 318-324, 1996 https://doi.org/10.1115/1.2831031
  11. Venkataraman, P., Applied Optimization with Matlab Programming. WILEY-INTERSCIENCE, 2002
  12. Bazara, M. S., Sherail, H. D. and Shetty, C. M., Nonlinear Programming Theory and Algorithms, WILEY, 1993