Analysis of key deformation error sources for multi-flexible body models

Ronghe Wang; Xiqing Zhang; Aimei Zhang; Yunpeng Zhou; Yaxin Guo; Shunjie Wei

doi:10.1117/12.2638788

20 September 2022 Analysis of key deformation error sources for multi-flexible body models

Ronghe Wang, Xiqing Zhang, Aimei Zhang, Yunpeng Zhou, Yaxin Guo, Shunjie Wei

Proceedings Volume 12261, International Conference on Mechanical Design and Simulation (MDS 2022); 122614F (2022) https://doi.org/10.1117/12.2638788
Event: Second International Conference on Mechanical Design and Simulation (MDS 2022), 2022, Wuhan, China

Abstract

Part deformation was one of the main sources of assembly errors. Traditional assembly accuracy analysis usually regarded parts as rigid body without considering the influence of deformation on assembly accuracy. This article took part deformation as the object of analysis. Firstly, the small displacement torsors theory was used to model the deformation of the front and rear mating characteristic surfaces of the part, and the relative pose relationship was used as the deformation of a single part. Secondly, the mapping relationship between part deformation and assembly error was established by the homogeneous coordinate transformation theory. Finally, the influence weight of each part deformation on the assembly error was obtained by sensitivity analysis, and the assembly accuracy was improved by increasing the stiffness of the key part deformation error sources. The calculation method of the key deformation error source is verified by an example analysis.

Citation Download Citation

Ronghe Wang, Xiqing Zhang, Aimei Zhang, Yunpeng Zhou, Yaxin Guo, and Shunjie Wei "Analysis of key deformation error sources for multi-flexible body models", Proc. SPIE 12261, International Conference on Mechanical Design and Simulation (MDS 2022), 122614F (20 September 2022); https://doi.org/10.1117/12.2638788

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