Application of coordinate transform on ball plate calibration

Hengzheng Wei; Weinong Wang; Guoying Ren; Limei Pei

doi:10.1117/12.2180721

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6 March 2015 Application of coordinate transform on ball plate calibration

Hengzheng Wei, Weinong Wang, Guoying Ren, Limei Pei

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Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 944613 (2015) https://doi.org/10.1117/12.2180721
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China

Abstract

For the ball plate calibration method with coordinate measurement machine (CMM) equipped with laser interferometer, it is essential to adjust the ball plate parallel to the direction of laser beam. It is very time-consuming. To solve this problem, a method based on coordinate transformation between machine system and object system is presented. With the fixed points’ coordinates of the ball plate measured in the object system and machine system, the transformation matrix between the coordinate systems is calculated. The laser interferometer measurement data error due to the placement of ball plate can be corrected with this transformation matrix. Experimental results indicate that this method is consistent with the handy adjustment method. It avoids the complexity of ball plate adjustment. It also can be applied to the ball beam calibration.

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Hengzheng Wei, Weinong Wang, Guoying Ren, and Limei Pei "Application of coordinate transform on ball plate calibration", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944613 (6 March 2015); https://doi.org/10.1117/12.2180721

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