Evaluation Method of Assembly Yield in Three-Dimension Single-Station Assembly Process Based on Number-Theoretical Net and 3DCS

Abstract:

Evaluation method of assembly yield in three-dimension single-station assembly process is presented based on Number-Theoretical Net (NT-net) and 3DCS. Firstly, based on the analysis of fixture deviation affect assembly deviation under arbitrary layout, the three dimensional single-station assembly deviation model under arbitrary layout is developed. Then, the principle of generating good lattice point (GLP) based on NT-net method is introduced. Afterwards, taking fixture locating variations which are sampled using NT-net method for input vectors, the samples are substituted into assembly deviation model of dimension variation propagation in single-station assembly processes to get output vectors. The statistics for qualified sample is accomplished, after comparing output vectors with the variations of measuring points on component. Assembly yield in three-dimension single-station assembly processes is gained when qualified sample divided by total sample. Finally, a real case in sheet metal assembly is given as an example to calculate the assembly yield in three-dimension single-station assembly processes. The result is validated by 3DCS.

• Periodical: Key Engineering Materials (Volumes 579-580)
• Pages: 270-275
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.579-580.270
• Online since: September 2013
• Authors: Ze Jun Wen, Fan Zhang, Jia Hu
• Keywords: 3DCS, Assembly Yield, Number-Theoretical Net Method, Three-Dimension Assembly

References

[1] Z.G. Zhou, W.Z. Huang: An Overview of Diagnosing and Controlling Assembly Variation of Sheet Metal Parts [J]. Automotive Engineering, Vol. 22(2000) No. 1, p.62~65. (In Chinese).

[2] S.J. Hu and J. Camelio: Modeling and Control of Compliant Assembly Systems[J]. CIRP Annals-Manufacturing Technology, Vol. 55 (2006) No. 1, pp.19-22.

DOI: 10.1016/s0007-8506(07)60357-6

[3] Z.Q. Tian, X.M. Lai and Z.Q. Lin: State Space Model of Variations Steam Propagation in Multi-station Assembly Processes of Sheet Metal[J]. Chinese Journal of Mechanical Engineering, Vol. 43 (2007) No. 2, pp.202-209. (In Chinese).

DOI: 10.3901/jme.2007.02.202

[4] J. Jin and J. Shi: State Space Modeling of Sheet Metal Assembly for Dimensional Control[J]. ASME Journal of Manufacturing Science and Engineering, Vol. 121 (1999) No. 2, pp.756-762.

DOI: 10.1115/1.2833137

[5] W. Huang, J. Lin, M. Bezdecny, Z. Kong and D. Ceglarek: Stream-of-Variation Modeling Part I: A Generic 3D Variation Model for Rigid Body Assembly in Single Station Assembly Processes[J]. Journal of Manufacturing Science and Engineering, Vol. 129(2007).

DOI: 10.1115/msec2006-21079

[6] W. Huang: Methodologies for Modeling and Analysis of Stream-of-Variation in Compliant and Rigid Assemblies[D]. (Wisconsin: University of Wisconsin-Madison, 2004), pp.28-32.