两点法误差分离技术的分离精度分析

Accuracy Analysis of Error Separation for Two-point Separating Technique

为了分析两点法误差分离技术中所包含的原理误差与该原理误差的规律和特性,在时域内建立了进行误差分离的零件模型,通过对不同影响因素的分析找到了两点法误差分离技术所含原理误差的规律和特性。使用两点法误差分离技术和圆度测量仪对同一零件进行测量比对,发现仿真结果和实验结果与理论分析相符。因此得出结论:当转轴不存在偏心误差时,对置安装传感器两点法分离结果的误差最大;当转轴存在偏心误差时,对置安装传感器两点法分离结果的误差最小。

In order to analyze the principle error and the principle error＇s regularity and characteristics in the two point error separation method,a part model in the time domain was established to make the error separation. Through the analysis of different influence factors,the principle error＇s regularity and characteristics of two point method error separation technique were found. Using two point method error separation technique and roundness measuring instrument to measure the same parts,it was found that the experiment results and the simulation results agreed with the theory analysis. So the conclusions are： when the shaft does not exist eccentric error,facing mounting the two sensors,the error of two point separation results is the biggest; when the shaft exist eccentric error,facing mounting the two sensors,the error of two point separation results is the smallest.