Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore
doi:10.3850/978-981-18-6021-8_OR-09-0001

Geometric Error Estimation and Compensation of Rotation Axis for Five-Axis Machining Centers Using a Common Measuring Tool

Toru Yamamoto1,a

1Department of Engineering, National Institute of Technology, Oita College, Japan

ABSTRACT

In precision machining, it is important to minimize the geometric error of the rotation axis in five-axis machining centers. The double ball bar and R-test methods are used to evaluate and understand rotation axis errors in five-axis machining centers. However, expensive equipment is necessary to implement these methods. Moreover, there are many cases in which, even if the error of the rotation axis is identified, users cannot correct these errors. Therefore, an evaluation method is proposed for understanding the error of the rotation axis in five-axis machining centers using a simple mathematical model and a dial gauge. Furthermore, a method for compensating for the geometric error of the rotation axis is suggested, and its effectiveness was demonstrated through real machining.

Keywords: Machining center, Five-axis control, Machining test, Machining accuracy, Geometric error, Compensation



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