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가공 스테이지와 반사경 이동 량을 결정하는 임계값이 LASER 가공오차에 미치는 영향에 관한 연구
이형규,박선재,최병주,홍민성 한국생산제조학회 2018 한국생산제조학회지 Vol.27 No.6
Laser processing equipment has been designed for marking on the fly during the machining stage and laser scanning. However, a problem exists whereby the tracking performance of the motor deteriorates because of the independent drive axis of each system. In addition, the tracking performance further deteriorates because of the inertia of the relatively large machining stage. This causes tracking errors during the control process and, consequently, the machining quality of the workpiece is reduced. In this study, the machining stage and scanner were composed of single kinematics, and a low pass filter was applied to reduce the driving motion of the machining stage. Thus, the machining accuracy was improved by adjusting the cut-off and Q-gain of the low pass filter, which was quantitatively verified by laser marking experiments.