五轴数控机床空间定位精度改善方法研究现状

发布时间：2018-02-20 04:19

本文关键词： 五轴数控机床定位精度误差建模误差辨识误差补偿　出处：《机械工程学报》2017年07期 　论文类型：期刊论文

【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。
[Abstract]:The spatial positioning accuracy of five-axis NC machine tools is affected by the static and dynamic errors of the machine tools, which is an important index to affect the machining quality of workpieces. Several main error modeling methods based on the numerical characteristics of different error sources are summarized in this paper. The characteristics of several error sensitivity analysis methods corresponding to the modeling method are analyzed. According to the composition of the five-axis CNC machine tool, the error detection and error identification methods of the translational axis and the rotating axis are summarized and analyzed respectively. The characteristics of several existing error compensation methods are summarized. Finally, comprehensive error modeling, error sensitivity analysis, error detection and identification, and error compensation are discussed. This paper systematically analyzes the problems that still need to be solved in the existing methods of improving the spatial positioning accuracy of five-axis CNC machine tools, and probes into the future development direction of the methods for improving the spatial positioning accuracy of five-axis CNC machine tools.
【作者单位】：清华大学机械工程系;清华大学精密超精密制造装备及控制北京市重点实验室;北京航空航天大学自动化科学与电气工程学院;
【基金】：国家科技重大专项资助项目(2013ZX04001-021)
【分类号】：TG659

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