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我厂是以加工汽车齿轮为主的专业性工厂。被加工齿轮模数一般为2—4毫米,精度多为7—D_c级,齿面光洁度▽7,齿圈经滚齿、剃齿成形。十几年来,在滚齿加工中,我们一直采用国内主要工具厂生产的零度前角剃前滚刀。从1982年开始,我们打破常规,把剃前滚刀刃磨成5°～7°正前角进行滚齿加工。结果,滚齿效率提高20%。滚刀耐用度提高50%左右,切削条件也明显地得到改善,收到了较好的经济效益。由于滚齿加工不决定齿形精度,
Our factory is mainly engaged in the processing of automotive gear professional factory. The modulus of the gear to be machined is generally 2-4 mm, the precision is mostly 7-D_c level, the tooth surface finish ▽ 7, the ring gear is hobbed and shaved. More than a decade, hobbing in the processing, we have been using the major domestic tool factory production of zero-rake pre-shaved hob. From 1982 onwards, we break the routine, sharpening the front hob to a positive angle of 5 ° ~ 7 ° for hobbing. As a result, hobbing efficiency is increased by 20%. Hob durability increased by about 50%, cutting conditions have also been significantly improved, received a better economic returns. As hobbing does not determine the tooth profile accuracy,