A method for measuring machine tool spindle rotation error based on installation error correction

Abstract

This invention provides a method for measuring the rotational error of a machine tool spindle based on installation error correction. A high-precision plane mirror is fixedly installed at the center of the bottom of the spindle tool head using bolts, and a laser interferometer is fixedly installed below the high-precision plane mirror. Before measurement, the corresponding data of different installation error values ​​and their caused residual synchronization errors are quantitatively calculated. Then, the installation error control range required to keep the residual synchronization error caused by the installation error within the required measurement accuracy is calculated. During testing, the installation error of the measuring device is obtained. Then, the installation error is adjusted by adjusting the installation position of the laser interferometer until the maximum amplitude of the basic synchronization rotational error extracted from the measurement data (i.e., the installation error) reaches the required installation error range. After the installation error of the measuring device is adjusted, data is collected to obtain the total axial rotational error data of the spindle, and the axial synchronous and asynchronous rotational errors of the spindle are calculated.

Images