五轴数控机床几何误差参数辨识与补偿

The geometric error distinguishing and compensation of 5-axis CNC machine tools

给出数控机床几何误差模型,用三次多项式对数控机床几何误差进行拟合,设计出与误差模型相适应的测量方案。对一台五轴数控加工中心(TTTRR)进行误差参数辨识,验证了本文辨识方法的可行性及测量方案的合理性;对某一试件进行误差补偿,显著提高了机床的加工精度。

This paper gives the geometric error model and designs the measurement program adapted to the error model using a cubic to fit with the polynomial geometric errors, error parameter identification has been done on a five-axis CNC machining centers （TITRR） , verifies the feasibility and the rationality of the error parameter identification and measurement solutions; at the end of the article, maehining accuracy of CNC machine tools significantly been improved by a error compensation experiment.