本文讨论了回转轴线角运动误差的测量原理及方法,并分别对精密圆转台及顶尖支承回转轴线的角运动误差进行了测试,估算了测量精度,共测得数据均用微处理机计算处理。本文还分析了顶尖支承回转轴线的角运动精度与顶尖及顶尖孔圆度误差的关系,并得出相应的结论。 In this paper, the measurement principle and method of angular movement error of rotary axis are discussed, and the angular movement errors of the rotary table and the top support rotary axis are respectively tested. The measurement accuracy is estimated. The measured data are all calculated by the microprocessor. The paper also analyzes the relationship between the angular movement of the top support axis and the roundness error of the top and top holes, and draws the corresponding conclusions.