精选优质文档-倾情为你奉上LATHES AND GRINDINGLathes are machine tools designed primarily to do turning, facing and boring. Very little turning is done on other types of machine tools, and none can do it with equal facility. Because lathe also can do drilling and reaming, their versatility permits several operations to be done with a single setup of the workpiece. The accounts for the fact that lathes of various types are more widely used in manufacturing than any other machine tool.Lathes in vari
