机床直行部件运动误差的在线测量  

ON-LINE MEASUREMENT OFMACHINE TOOLS STRAIGHT-GOINGPARTS MOTION ERROR

作　　者：苏恒[1] 洪迈生[1] 魏元雷[1] 李自军[1] 熊诗波[2] 

机构地区：[1]上海交通大学机械工程学院,上海200030 [2]太原理工大学

出　　处：《机械工程学报》2003年第3期8-12,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(50075056)。

摘　　要：提出了采用精确时域两点法测量机床直行部件运动误差的新方法。该方法可以克服利用经典频域三点法测量直行部件运动误差时,由于误差的非周期性、非封闭性以及端点不连续而引起的高阶谐波分量失真等边缘效应。另外,该方法既可以得到机床直行部件的运动误差,又可以得到在该机床上加工零件的直线度形状误差,这些测量信息都有助于诊断机床的误差源,以提高机床的加工精度。A novel accurate two-probe method in time domain is put forward to measure straight-going component motion error in machine tools. The characteristics of non-periodic and non-closing in straightness profile error are liable to bring about higher order harmonic component distortion in measurement result. However this distortion can be avoided by the new accurate two-probe method in time domain through the algorism of symmetry continuation, uniformity and least square. The harmonic suppression is analyzed in detail through modern control theory. Both straight-going component motion error in machine tools and the profile error in workpiece that is manufactured on this machine can be measured at the same time, all of those information is available to diagnose the fault origin of machine tools. The analysis result is proved to be correct by the experiment.

关 键 词：趋势项 对称延拓 误差初值 运动误差 误差分离技术 

分 类 号：TG806[金属学及工艺—公差测量技术]