第三代轮毂轴承凸缘端面跳动的测量

Measurement for End Face Runout of Third-Generation Hub Bearing Flange

针对第三代轮毂轴承凸缘端面跳动测量中由于测量端面倾斜导致系统误差的问题,提出了一种通过坐标转换及最小二乘拟合消除系统误差的方法,并采用伺服电动机和静压主轴搭建试验装置,利用LabVIEW开发了3种类型凸缘端面跳动量的信号采集、处理和分析程序。试验结果表明,3种凸缘端面跳动量重复测量精度均在±2 μm,实现了第三代轮毂轴承单元凸缘端面跳动的数字化精确检测。

Aimed at system error caused by tilt of measuring end face during measurement for end face runout of third generation hub bearing flange, a method is put forward to eliminate system error by coordinate transformation and least square fitting. The servo motor and hydrostatic spindle are used to build experimental device, and LabVIEW software is used to develop signal acquisition, processing and analytical procedures for three types of end face runout of flange. The experimental results show that the accuracy of repeated measurement for three types of end face runout of flange is all within ±2 μm, which achieves digital accurate detection for end face runout of third-generation hub bearing unit flange.