在某回转轴系上建立了一系列坐标系 ,通过坐标系之间的姿态关系分别推导了用水平仪测试法和自准直光管测试法测试主轴轴系倾角回转误差时水平仪和光管的读数表达式。根据水平仪和自准直光管读数中的各个误差组成部分和倾角回转误差在它们中的表达式的区别 ,得出了水平仪法能测试出主轴回转误差中的一次谐波成分 ,而自准直光管法则不能测试出回转误差的一次谐波成分的结论 A series of coordinate systems were established on a rotating shaft system. The readings of the spirit level and the light pipe were deduced respectively from the attitude relationship of the coordinate system by using the spirit level test method and self-collimating light pipe test method to test the slewing error of the spindle shaft inclination formula. According to the differences between the error components of the leveling instrument and self-collimating light tube readings and the expressions of the inclination rotation errors, it is concluded that the level instrument method can test the first harmonic component of the spindle rotation error, and the self-collimation The law of the light pipe can not test the conclusion of the first harmonic component of the gyroscopic error