起动机与发电机的整流子外圆精车加工,是一个较为困难的工序。零件表面不但要求较高的光洁度(▽▽▽7),而且在它的中间还夹有绝缘的云母片,加工时软硬交替,带有瞬时的间断性,给加工带来了困难。代们建厂八年来,对于这个工序的加工,曾作了不少的摸索,但仍不能达到设计要求。 Starter and generator commutator cylindrical finishing, is a more difficult process. The surface of the part not only requires a higher finish (▽ ▽ ▽ 7), but also has an insulating mica sheet in the middle of it, alternating with hard and soft during machining, with instantaneous discontinuities, which makes it difficult to machine. Over the past eight years since the founding of factories, there has been a lot of exploration for the processing of this process, but it still can not meet the design requirements.