电主轴回转误差的测量与研究

Measurement and research of the electric spindle rotation error

为得到不同转速下主轴的回转精度,采用双向动态测量法测量液体静压轴承电主轴的径向位移误差,借助激光位移传感器记录主轴径向误差数据,利用自主开发的数据处理软件实现测量数据的误差分离,通过最小二乘圆法评定主轴的回转精度,为主轴最优工作转速的选取提供理论依据。

The experiment measures the radial displacement error of hydrostatic bearing electric spindle using two-direction dynamic measurement method. With a laser displacement sensor to record the error on radial direction,the research has developed a data processing software to realize the error separation of measured data. The rotation accuracy is determined by the least squares method. The study can provide a reference for the selection of optimal spindle working speed.