拉孔,由于生产效率高,又能获得较高的加工精度和表面光洁度,所以在机械加工的大批大量生产中,得到了广泛的应用。但是,不少工厂还没能稳定地掌握这种工艺方法,拉出来的圆孔质量低。针对这个问题,我们学习各兄弟厂先进经验,深入生产第一线,进行了反复试验,到目前为止已初步摸索 La Kong, due to high production efficiency, but also to obtain higher precision and surface finish, so a large number of mass production in the machining, has been widely used. However, many factories have not been able to master this process method steadily, and the quality of round holes pulled out is low. In response to this problem, we learn the advanced experience of the brothers plant, in-depth production of the first line, conducted a trial and error, so far has been initially explored