The paper analyses difficulties and characteristics in machining bearing hole of canular forked shaft and measuring its position error;and it designs equipment for machining and measuring this hole.

• 提出在计算机辅助夹具设计中定位参考面的建模方法,并在此基础上分析了定位件位置误差对工件几何精度的影响,为校验和改进夹具设计提供了依据。