水泵转子径向圆跳动检测数据修正

针对应用千分表和电涡流传感器进行水泵转子径向圆跳动检测时,检测结果出现正弦变化规律的现象,分析了安装偏心误差对检测结果的影响原理,建立了相应的数学模型.运用最小二乘拟合法计算出变化曲线的幅值及初相位,从而消除偏心误差实现误差分离.结果表明,当将所提方法应用在水泵转子径向圆跳动检测的工程实践中时,可以有效消除安装偏心引起的误差,从而提高检测精确度.拟合平方和误差约为0. 000 9,所提方法可以广泛应用于轴类工件的检测实践.

Correction of detected data in radial circle runout of water pump rotor

Aiming at the sinusoidal variation phenomenon of detected results when the dial indicator and eddy current sensor are used to detect the radial circle runout of water pump rotor, the influence principle of installation eccentric error on the detection result was analyzed, and the corresponding mathematical model was established. In order to eliminate the eccentric error and realize the error separation, the amplitude and initial phase of change curves were calculated with the least square fitting method. The results show that when the proposed method was used in the engineering practice of radial runout detection of pump rotor, the error caused by the installation eccentricity can be effectively eliminated, and the detection accuracy can be improved. The error of fitting square sum is about 0.000 9, and the proposed method can be widely used in the detection of shaft workpieces.