• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2016, Vol. 52 ›› Issue (7): 187-195.doi: 10.3901/JME.2016.07.187

• 数字化设计与制造 • 上一篇    下一篇

扫码分享

基于RTCP功能的五轴数控机床动态误差溯源方法

姜忠1, 丁杰雄1, 王伟1, 邓梦1, 杜丽1, 宋智勇2   

  1. 1. 电子科技大学机械电子工程学院 成都 611731;
    2. 成都飞机工业(集团有限责任公司数控加工厂 成都 610092
  • 出版日期:2016-04-05 发布日期:2016-04-05
  • 作者简介:姜忠(通信作者),男,1989年出生,博士研究生。主要研究方向为机床精度检测,故障检测。E-mail:jiangzhong1989@163.com;丁杰雄,男,1966年出生,教授,博士研究生导师。主要研究方向为精密机电测控技术。E-mail:jxding@uestc.edu
  • 基金资助:
    国家科技重大专项资助项目(2013ZX04001-021)

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

JIANG Zhong1, DING Jiexiong1, WANG Wei1, DENG Meng1, DU Li1, SONG Zhiyong2   

  1. 1. School of Mechanical, Electronic, and Industrial Engineering, University of Electronic Science and Technology of China, Chengdu 611731;
    2. NC Machining Workshop, Chengdu Aircraft Industrial (Group Co., Ltd., Chengdu 610092
  • Online:2016-04-05 Published:2016-04-05

摘要: RTCP(Rotation tool center point)功能作为目前高档数控机床必备的功能之一,可以大幅减小由于旋转轴运动带来的非线性误差,有效提高机床加工精度。根据刀具刀尖点相对于加工工件相对静止的特点,设定刀具刀尖点不动,规划了有利于研究机床伺服系统动态性能的RTCP轨迹,并进行伺服系统仿真研究,得到刀尖点误差轨迹与机床伺服系统动态性能影响因素的对应关系,并依据此对应关系提出动态误差溯源方法,为数控机床伺服系统参数调整提供理论支持。

关键词: RTCP功能, 动态误差, 伺服系统, 五轴数控机床

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

中图分类号: