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IJAT Vol.14 No.3 pp. 399-408
doi: 10.20965/ijat.2020.p0399
(2020)

Paper:

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Identification Method of Error Motions and Geometric Errors of a Rotary Axis by R-Test

Takaaki Kenno*, Ryuta Sato*,†, Keiichi Shirase*, Shigemasa Natsume**, and Henny Spaan***

*Department of Mechanical Engineering, Kobe University
1-1 Rokko-dai, Nada-ku, Kobe 657-8501, Japan

†Corresponding author

**P&C Ltd., Yokohama, Japan

***IBS Precision Engineering BV, Eindhoven, Netherlands

Received:
September 29, 2019
Accepted:
December 10, 2019
Published:
May 5, 2020
Creative Commons License
Keywords:
five-axis machine tools, rotary axis, error motion, geometric error, R-test
Abstract

While evaluating the accuracy of high-precision machine tools, it is critical to reduce the error factors contributing to the measured results as much as possible. This study aims to evaluate both the error motions and geometric errors of the rotary axis without considering the influence of motion error of the linear axis. In this study, only the rotary axis is moved considering two different settings of a reference sphere, and the linear axes are not moved. The motion accuracy of the rotary axis is measured using the R-test device, both the error motions and geometric errors of the rotary axis are identified from the measurement results. Moreover, the identified geometric errors are verified for correctness via measurement with an intentional angular error. The results clarify that the proposed method can identify the error motions and geometric errors of a rotary axis correctly. The method proposed in this study can thus be effective for evaluating the motion accuracy of the rotary axis and can contribute to further improvement of the accuracy of the rotary table.

Cite this article as:
T. Kenno, R. Sato, K. Shirase, S. Natsume, and H. Spaan, “Identification Method of Error Motions and Geometric Errors of a Rotary Axis by R-Test,” Int. J. Automation Technol., Vol.14 No.3, pp. 399-408, 2020.
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Last updated on Apr. 22, 2024