在轴类零件上进行钻孔或铣键槽工序时,过去都是用划线法找正轴心线的,这不仅费时麻烦,而且也很难保证孔或键槽轴心线与其轴的轴心线形位公差要求。附图介绍一种简单易行的找正方法。它通过锥柄心轴1、锥形定位套2和v形铁3组合使用。锥柄(或直柄)心轴是按所用机床主轴孔来配制的,其下圆柱端与锥形定位套2的内孔滑配合在一起,定位套的锥面和 In the shaft parts on the drilling or milling process keyway, in the past are crossed with the law to find the positive axis, which is not only time-consuming, but also difficult to ensure that the hole or keyway shaft axis and its axis Bit tolerance requirements. The figure shows a simple and easy way to find a solution. It is used by taper shank mandrel 1, taper sleeve 2 and v-shaped iron 3 combination. The taper shank (or straight shank) mandrel is prepared according to the machine tool spindle hole used, the lower cylindrical end is slid fit with the inner hole of the conical locating sleeve 2, the conical surface of the locating sleeve and