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IJAT Vol.11 No.2 pp. 171-178
doi: 10.20965/ijat.2017.p0171
(2017)

Paper:

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Evaluation Method for Behavior of Rotary Axis Around Motion Direction Changing

Tadahiro Nishiguchi*,†, Shogo Hasegawa**, Ryuta Sato**, and Keiichi Shirase**

*Nagano Prefectural Institute of Technology
813-8 Shimonogo, Ueda, Nagano 386-1211, Japan

†Corresponding author

**Department of Industrial Engineering, Kobe University, Kobe, Japan

Received:
July 19, 2016
Accepted:
November 8, 2016
Published:
March 1, 2017
Creative Commons License
Keywords:
5-axis controlled machining center, rotary axis, dynamic behavior, motion direction changes, machined surface
Abstract
Several methods for evaluating the motion accuracy of the rotary axes in five-axis machining centers have been proposed till date. As it is known that particular motion errors exist around the motion direction changing points, it is important to evaluate the behavior of the rotary axes around these points. However, the influence of the motion error in the translational axes is included in the conventional evaluation results, as the translational axes reverse at the motion direction changing points about the rotary axes. In this study, an evaluation method which can assess the behavior of a rotary axis around motion direction changes by synchronous motion of translational and rotary axes is proposed. In this method, the direction of translational axes does not change when the motion direction of a rotary axis changes. A measurement test and actual cutting tests are carried out to clarify the influence of the behaviors of rotary axes on the motion trajectory and machined surface, caused by the change in the motion direction of the rotary axis. Simulations of the motion are also carried out to discuss the causes of inaccuracy.
Cite this article as:
T. Nishiguchi, S. Hasegawa, R. Sato, and K. Shirase, “Evaluation Method for Behavior of Rotary Axis Around Motion Direction Changing,” Int. J. Automation Technol., Vol.11 No.2, pp. 171-178, 2017.
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