五点法测量机床主轴轴向及倾角的运动误差

提出了测量机床主轴的轴向及倾角运动误差的端面五点法。在轴端面绕轴心的某一圆周上，垂直于轴端面，按通过误差分析优化确定的位置，布置五个测头，在主轴回转一圈中同时测得主轴的轴向及倾角运动误差以及端面基准的形状误差，并将测头的读数及定位误差的影响降至最低程度。本方法可用于机床主轴回转精度的实时测量，试验表明其测量精度可达亚微米级。

FIVE-POINT METHOD FOR THE MEASUREMENTS OF THE AXIAL AND TILT MOTIONS ERROR OF A LATHE SPINDLE

A new method called face five point method for the measurements of the axial and tilt motion errors of a lathe spindle is proposed, in which five probes are set perpendicular to the spindle face and all located along a circle which is concentric with the spindle axis and the positions of the probes are optimized based on error analysis, which can get the axial and tilt motion error of a spindle in one revolution of the spindle rotary, the measurements error caused by the reading errors and misalignments of the probes are minimized. Experiments show that the proposed method can be used for real time spindle motion error measurement with submicron accuracy.