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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 6, pp.479-484

ISSN: 2508-5093 (Print) 2508-5107 (Online)

Print publication date 15 Dec 2018

Received 16 Nov 2018 Revised 26 Nov 2018 Accepted 30 Nov 2018

DOI: https://doi.org/10.7735/ksmte.2018.27.6.479

가공 스테이지와 반사경 이동 량을 결정하는 임계값이 LASER 가공오차에 미치는 영향에 관한 연구

이형규^a ; 박선재^a ; 최병주^b ; 홍민성^b^{, *}

A Study of LASER Machining Error Based on the Threshold for Distributing the Machining Stage and Mirror Movement

Hyung Ku Lee^a ; Sun Jae Park^a ; Byungjoo Choi^b ; Min Sung Hong^b^{, *}

aLEETECH Co., Ltd 26-46, 80 Bungil, Juseok-ro, Whaseong, Gyeonggi-do, 18255, Korea
bDepartmet of Mechanical Engineering, Ajou University, 206, Worldcup-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16499, Korea

Correspondence to: ^*Tel.: +82-31-219-2526 Fax: +82-31-219-1611 E-mail address: mshong@ajou.ac.kr (Min Sung Hong).

Abstract

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.

Keywords:

Marking on the fly, Single kinematics, Low pass filter, Marking accuracy

References

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