• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2017, Vol. 53 ›› Issue (7): 113-128.doi: 10.3901/JME.2017.07.113

• 数字化设计与制造 • 上一篇    下一篇

五轴数控机床空间定位精度改善方法
研究现状*

李杰1, 谢福贵1,2, 刘辛军1,2, 梅斌1, 董泽园3   

  1. 1. 清华大学机械工程系 北京 100084;
    2. 清华大学精密超精密制造装备及控制北京市重点实验室 北京 100084;
    3. 北京航空航天大学自动化科学与电气工程学院 北京 100191
  • 出版日期:2017-04-05 发布日期:2017-04-05
  • 作者简介:

    李杰,男,1987年出生,博士研究生。主要研究方向为五轴数控机床误差补偿。

    E-mail:jie-li13@mails.tsinghua.edu.cn

    刘辛军(通信作者),男,1971年出生,博士,教授,博士研究生导师,德国洪堡学者,国家杰出青年基金获得者,长江学者特聘教授。主要研究方向为机构学与机器人,先进制造装备。

    E-mail:xinjunliu@mail.tsinghua.edu.cn

  • 基金资助:
    * 国家科技重大专项资助项目(2013ZX04001-021); 20160506收到初稿,20161108收到修改稿;

Analysis on the Research Status of Volumetric Positioning Accuracy Improvement Methods for Five-axis NC machine Tools

LI Jie1, XIE Fugui1,2, LIU Xinjun1,2, MEI Bin1, DONG Zeyuan3   

  1. 1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084;
    2. Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084;
    3. School of Automation Science and Electronical Engineering, Beihang University, Beijing 100191
  • Online:2017-04-05 Published:2017-04-05

摘要:

五轴数控机床空间定位精度受机床静、动态误差的综合作用,是影响工件加工质量的重要指标。综述了基于不同误差源数值特征描述的几种主流误差建模方法,分析与建模方法对应的几种误差灵敏度分析方法的特点。根据五轴数控机床的构成,分别对平动轴和转动轴的误差检测和误差辨识方法进行了综述和分析。根据动、静态误差类型的不同,总结了现有几种主要误差补偿方法的特点。最终,综合误差建模、误差灵敏度分析、误差检测和辨识以及误差补偿五个方面,系统性地分析了现有五轴数控机床空间定位精度改善方法中尚需解决的问题,探讨了五轴数控机床空间定位精度改善方法未来的发展方向。

关键词: 定位精度, 误差辨识, 误差补偿, 误差建模, 五轴数控机床

Abstract:

The volumetric positioning accuracy of five-axis machine tools affected by both static and dynamic error sources is an important performance index that can badly influence the machining quality of work pieces. According to the different descriptions of the numerical characteristics of error sources, the mainly used error modeling methods and the corresponding error sensitivity analysis methods are summarized. The error measurement and identification methods of linear axes and rotation axes are respectively summarized and illustrated. Then, based on different kinds of error sources, the mainly used error compensation methods are also demonstrated. The existing deficiencies in volumetric positioning accuracy improvement methods for five-axis machine tools are discussed in five different aspects, including error modeling, error sensitivity analysis, error measurement, error identification and error compensation. Finally, the development direction of the volumetric positioning accuracy improvement methods are also analyzed based on the overview.

Key words: error compensation, error identification, error modeling, positioning accuracy, five-axis machine tool