基于圆检验的数控机床几何误差辨识-中国管理科学.pdf

第43卷 第1期 北 京 工 业 大 学 学 报 Vol.43 No.1 2017年 1月 JOURNAL OF BEIJING UNIVERSITY OFTECHNOLOGY Jan. 2017 基于圆检验的数控机床几何误差辨识 1,2 1 1 1 1 王摇 民 ,李家富 ,昝摇 涛 ,马钢建 ,周摇 霜 (1.北京工业大学机械工程与应用电子技术学院先进制造技术北京市重点实验室,北京摇 100124; 2.电火花加工技术北京市重点实验室,北京摇 100191) 摘摇 要:为了准确地辨识出三轴立式数控机床的各项几何误差,通过多体系统理论建立了三轴立式数控机床圆运 动轨迹数学模型,分析了数控机床圆检验中典型误差对机床圆运动轨迹的影响机理. 考虑多种几何误差对机床圆 检验运动轨迹的影响,提出了一种基于最小二乘法和多项式误差模型的几何误差辨识方法,该误差辨识方法可以 辨识出三轴立式数控机床的21项几何误差. 数值仿真结果表明:该误差辨识方法具有准确性和可行性. 关键词:数控机床;圆检验;几何误差辨识 中图分类号:TH161 文献标志码:A 文章编号:0254-0037(2017)01-0058-07 doi:10.11936/ bjutxb2016010070 Identification of CNC Machine Tools爷 Geometric Errors Based on Circular Tests 1,2 1 1 1 1 WANG Min ,LI Jiafu ,ZAN Tao ,MA Gangjian ,ZHOU Shuang (1.Advanced Manufacturing Technology of the Key Laboratory of Beijing Municipality,College of Mechanical Engineering and Applied ElectronicsTechnology,Beijing University of Technology,Beijing 100124,China; 2.Beijing Municipal Key Lab of EDM Technology,Beijing 100191,China) Abstract:To identify the geometric errors of three鄄axis vertical CNC machine tools,the circular motion trajectories of three鄄axis vertical machine tools were modeled by using the theory of multi鄄body system. Based on thenumerical simulationsof circular motiontrajectories,theinfluencemechanismof thetypical geometric errors on the circular motion trajectories was analyzed. Considering the influence of multiple geometric errors on the circular motion trajectory,this paper put for