我厂在高速车削“刹根”螺丝(如图1)时,曾发生这样的问题由于走刀快,无法控制在一定的位置上退刀;在一刀车削完毕或到达一定位置后,无法使大拖板立即停止走刀。因此,即停是很熟练的操作者,也不容易掌握。偶一不慎,车刀就和工件肩部或卡盘相碰撞。因此,我厂就设计了一套简单的自动停退刀装置,通过几次试验和改进,得到了很好的效果。利用这套装置来 I plant turning “brake root” screws (Figure 1), had such a problem because of the fast knife, can not control the retraction in a certain position; in a knife turning is completed or arrived at a certain position, can not make large Pallet immediately stop the knife. Therefore, stop is a very skilled operator, nor easy to grasp. Occasionally accidentally, the lathe and the workpiece shoulder or chuck collide. Therefore, our factory designed a simple set of automatic stop tool, through several tests and improvements, has been very good results. Use this device to come