由于用划线钻孔的方法制出的盘形件上的偏心孔,精度不高,因此,对设计精度要求较高的盘形件上的偏心孔,可以考虑车削制出。图示为一带偏心孔的盘形件,为了图面清晰起见,零件的尺寸、精度、光洁度等均未注出。假定盘中心为 O, Since the eccentric hole on the disc formed by the method of scribing and drilling is not accurate, the eccentric hole on the disc requiring high design accuracy can be considered for turning. Pictured as a disc with eccentric holes, for the sake of clarity, parts of the size, precision, finish, etc. are not out. Assuming disk center is O,