Manuscript received October 16, 2023; revised January 18, 2024; accepted March 23, 2024; published July 11, 2024
Abstract—In this study, we propose a power-saving method and perform a temperature analysis. In a previous study, a wave gear system was incorporated into the swivel axis of a five-axis-controlled machine tool to realize compact and precise machining. The results showed that the power required to operate the machine was reduced and the motion accuracy was improved with the introduction of the wave gear system. In addition, the wave gear system is known to have a higher reduction rate in power consumption during continuous operation than other gear systems owing to a decrease in the viscosity of the internal grease with increase in temperature. This study focuses on these characteristics and examines warm-up operation conditions that take advantage of power fluctuations accompanying temperature rise during swing axis drive, which has been investigated in the past. In contrast to warm-up operation conditions, which are generally determined empirically based on data from actual machines, in the present work, warm-up operation conditions are determined and evaluated using a modeling method that integrates a control system and a thermal circuit model.
Keywords—five-axis control machine tools, warm-up operation, wave gear system, thermal circuit model, swivel axis, thermal displacement
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Cite: Fuka Hashiba, Eiichi Aoyama, and Toshiki Hirogaki, "Improvement of Motion Accuracy for Compact Size Five-Axis-Controlled Machine Tool with a Wave Motion Gear Device Considering Warming-up Operation," International Journal of Modeling and Optimization, vol. 14, no. 3, pp. 94-99, 2024.
Copyright © 2024 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
(CC BY 4.0).
