The main spindle of the dividing head drives the workpiece by means of a3-jaw universal chuck or a dog and live centre similar to a lathe .

分度头的主要纺锤通过3下颌 普遍牛 颈肉或一个狗和活中心驾驶制件相似与车床。

The universal chuck has only three jaws .

万能 卡盘只有三个爪。