基于CMM的线轮廓度误差测量与评定技术

摘要

Aiming to the measuring of profile of a line error r of high speed wheel tread, work over the profile of a line error measuring method by CMM. For the CAD figure node data of profile of tread line being profile in frame of reference, for the measuring node data of profile of tread line being measuring profile, using east square method and conditional optimizative method to evaluate profile of a line error. The excellence of this method is to apart and remove position error between profile in frame of reference and measuring profile to make the result being more exactitude.%针对动车轮踏面线轮廓度误差检测,研究使用三坐标测量机检测平面线轮廓度误差的方法.以踏面轮廓CAD图形节点数据描述理论轮廓,以实际踏面轮廓探测点数据描述被测轮廓,应用最小二乘法和条件约束优化方法计算和评定线轮廓度误差.该方法的优点是分离和消除被测轮廓与理论轮廓间的位置误差对轮廓度误差评定结果的影响.