数控机床空间定位精度的测量与补偿

Measurement and compensation of volumetric positioning errors for CNC machines

本文介绍一种使用美国光动公司的激光多谱勒位移测量仪,对数控机床进行空间误差检测的激光矢量测量新方法。该方法可以方便而快速地检测出机床的空间定位精度,包括3个定位误差、6个直线度误差和3个垂直度误差;同时还可以根据测量的空间定位误差数据生成误差补偿的代码,进而可以对其进行空间定位误差的补偿,大幅度提高了数控机床加工精度。

This paper introduces a new laser vector method using Laser Doppler Displacement Meter(LDDM) for the measurement of the volu- metric errors of the machine. It is convenient and fast to measure the volumetric positioning errors including 3 displacement errors, 6 straightness errors and 3 squareness errors. Meanwhile, the LDDM soft- ware can automatically generate the compensation codes according to the measured data, then these codes would be loaded into CNC con- troller to improve volumetric postiton accuaracy of the machine.