为提高企业经济效益,适应日益发展的市场变化,我厂在小批量、多品种、方便上狠下功夫,但这小批量、多品种的生产给我们的技术工作带来困难。如我厂新生产的几种汽车及叉车的驱动桥的主减速器壳体的大直径内螺纹的加工、桥孔的内孔及端面的加工就成了老大难问题。为 In order to improve the economic efficiency of enterprises and to adapt to the changing market, our factory makes great efforts in small quantities, varieties and conveniences, but the production of small quantities and varieties has brought difficulties to our technical work. If my factory newly produced several kinds of cars and forklift drive axle drive reducer shell diameter of the internal thread processing, the bridge hole and the end face of the hole processing has become a chronic problem. for