Tracing the Source of the Dynamic Error for Five-axis CNC Machine Tool Based on RTCP

doi:10.3901/JME.2016.07.187

Abstract

Abstract: RTCP(Rotation tool center point)is one of the necessary function for high-grade CNC machine tool, which can effectively decrease the nonlinear errors caused by the motion of rotation axis and improve the machinery accuracy. According to the characteristics that the cutting tool tip point is still relative to the manufacturing workpiece, the RTCP trajectory is proposed so as to conveniently measure displace of tool tip point. The scheme is in favour of studying the dynamic performance of the machine tool, and simulation which shows the relationship between the error trajectory of the tip point and the dynamic performance influencing factors of the machine tool is presented based on servo system model. Then the method on tracing the source of the dynamic error is suggested, and will perform the theoretical support for parameter adjustment of CNC machine tools.

Key words: dynamic error, five-axis CNC machine tool, RTCP function, servo system

CLC Number:

TH161

JIANG Zhong, DING Jiexiong, WANG Wei, DENG Meng, DU Li, SONG Zhiyong. Tracing the Source of the Dynamic Error for Five-axis CNC Machine Tool Based on RTCP[J]. Journal of Mechanical Engineering, 2016, 52(7): 187-195.

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