我厂生产的管子钳螺母毛坯为管材,如图1所示,除外圆要求滚网纹外,内孔及两端面均在普通车床上加工,生产效率低,劳动强度大。为此,我们对一台 C 616车床进行了改装,实现了螺母内孔及端面加工的自动化,效果较好。现简要介绍如下。 一、机床改装后的结构 为使车床改装后仍可恢复为 I plant the production of pipe pliers nut blank for the pipe, shown in Figure 1, except the roller requires rolling textured, the hole and the two ends are in the ordinary lathe processing, production efficiency is low, labor-intensive. To this end, we have a C 616 lathe was modified to achieve the nuts bore and face machining automation, the better. Now brief introduction is as follows. First, the modified machine structure to make the lathe can be restored after the conversion