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大量车削薄片圆盘或大型垫圈的端面和外圆时,可以用下述方法来进行。车一根心轴,使它与薄片圆盘为滑动配合,然后,按图示铣半圆形键槽,使形状略有修改的半圆键能放入其中,键的一端高于心轴的外圆、另一端恰好与心轴外圆一样平。将心轴安装在四爪卡盘中,找正好不同轴度,三个爪将心轴夹持在适当位置,而第四个爪夹持半圆键的后部的时候,使半圆键的前部在键槽中向外摆动,夹住了工件的内孔。
When turning a large number of discs or large washers on the face and the outer circumference, the following method can be used. Car a mandrel to make it slide with the disc for the disc, and then, according to the diagram milling semicircular keyway, the shape of the semi-circular key can be slightly modified into one end of the key is higher than the outer mandrel , The other end just as flat with the outer mandrel. The mandrel installed in the four-jaw chuck, to find just different axis, the three claws to hold the mandrel in place, while the fourth claw holding the back of the semicircular key, so that the front of the semicircular key Department in the keyway swing outwards, holding the workpiece bore.