轴类零件中心孔(C型)的加工,在普通车床上需要进行打中心孔、钻孔、攻丝工序,换刀麻烦。为此,我们制作了多刀夹具在普通车床上使用,效率提高2～3倍。将夹具安装在尾座架上(图1),刀具装在铰链块锥孔内,注意将刀具长短调整基本一致,并将尾座固定在适当位置。操作时摇动尾座手柄5,使刀具纵向进退,变换刀具时只需将已经使用过的刀具推开,向后旋转90°,将所需刀具旋转到位并 Shaft parts center hole (C type) processing, in the ordinary lathe need to hit the center hole, drilling, tapping process, tool change trouble. To this end, we have produced multi-tool fixture in the use of ordinary lathe, the efficiency increased by 2 to 3 times. The fixture is installed on the tailstock (Figure 1), the tool is installed in the tapered hole of the hinge block, pay attention to the adjustment of the tool length is basically the same, and the tailstock is fixed in place. When operating, the tailstock handle is shaken 5 to make the tool advance and retreat longitudinally. When changing the tool, it just needs to push away the tool which has been used and rotate 90 ° backward to rotate the required tool in position