基于球杆仪的五轴机床RTCP误差检测及补偿

Five-axis Machine Tool RTCP Error Measurement and Compensation by Ball Bar Tests

针对五轴机床RTCP误差检测存在检测时间长、测量精度低的情况,提出用球杆仪检测RTCP误差的方法,分析可知AC双转台RTCP误差不仅有4项位置误差,而且存在4项角度误差和初始安装误差。根据机床运动链建立AC双转台RTCP误差模型,采用基于球杆仪的检测方法,并推导RTCP误差元素求解方法。通过误差补偿试验验证了误差模型和误差求解方法的准确性和有效性。

Long detection time and low measurement accuracy exist in RTCP error measuring,so this paper proposes to use ball bar test to measure,the RTCP Error,and analyzes the RTCP errors of five-axis control machine tool with AC tilting rotary table,including not only four linear errors,but also four angle errors and install errors.On this basis,according to the machine tool motion chain,the RTCP error model is established.Then the solution of the RTCP errors is deduced based on ball bar measurement.Through the RTCP error measurement and compensation on VMC0656e,the accuracy and effectiveness of the error model and error deduction method are validated.