Analysis and experimental study of the spherical joint clearance

Peng Zhao; Penghao Hu; Xinxin Bao; Shuaipeng Li

doi:10.1117/12.2035728

10 October 2013 Analysis and experimental study of the spherical joint clearance

Peng Zhao, Penghao Hu, Xinxin Bao, Shuaipeng Li

Proceedings Volume 8916, Sixth International Symposium on Precision Mechanical Measurements; 89160E (2013) https://doi.org/10.1117/12.2035728
Event: Sixth International Symposium on Precision Mechanical Measurements, 2013, Guiyang, China

Abstract

The spherical joint clearance is a key error factor, which influenced and restricted the application of parallel mechanism in high precision field. This paper discusses the regularity of the spherical joint clearance in the parallel mechanism and its influence on the accuracy of the parallel mechanism in both theoretical and experimental aspects. A spherical joint clearance measuring instrument is introduced and used to measure the joint clearance. And the relationship between the clearance and its work pose is revealed. Based on the theoretical and experimental analysis, it is concluded that the clearance of the spherical joint is near-linear proportional to the applied load as well as the clearances in different poses obey the Rayleigh distribution approximately under the same load.

Citation Download Citation

Peng Zhao, Penghao Hu, Xinxin Bao, and Shuaipeng Li "Analysis and experimental study of the spherical joint clearance", Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89160E (10 October 2013); https://doi.org/10.1117/12.2035728

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