A compensation method of NC data based on contour error
ZHANG Yun1, LIANG Guangshun1, ZHANG Yun2, LI Yan2
1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; 2. Beijing Mechanical & Electronical Technology Research Institute, Ltd., Beijing 100027, China
Abstract:Error compensation is an important means to improve the machining accuracy of NC machine tools. In this study, a three-coordinate measuring machine is used to measure the x, y, and z coordinates of points on the surface of a hexagonal groove after machining, and the contour error is calculated according to the ideal model. Next, based on mirror anti-deformation, the contour error at the midpoint of the tool point connection is compensated to obtain new NC data. The results indicate that after error compensation, the maximum absolute value of contour error of parts is reduced by 48.1%, and the machining accuracy is considerably improved. The compensation method of NC data based on contour error has strong applicability to parts composed of linear machining paths. Considering the midpoint of the tool point connection as the compensation object is conducive to error measurement and program design.
张云, 梁光顺, 张赟, 李燕. 一种基于轮廓误差的NC数据补偿方法[J]. 清华大学学报(自然科学版), 2022, 62(12): 1989-1995.
ZHANG Yun, LIANG Guangshun, ZHANG Yun, LI Yan. A compensation method of NC data based on contour error. Journal of Tsinghua University(Science and Technology), 2022, 62(12): 1989-1995.
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