牵引电动机整流子表面光洁度和形位精度影响着牵引电动机的换向和动平衡性能,为了确保电机质量,产品图纸中要求SS,电力机车牵引电机整流子表面光洁度为▽_8,东风4型内燃机车牵引电机整流子表面光洁度为▽_7,垂直度允差为0.02毫米。改进前整流子加工达不到设计技术要求,其加工工艺是:整流子一端夹固在车头卡盘上,另一端支持在尾座活动顶针上,用加垫工艺孔的方法修正垂直度,以硬质合金刀进行加工,光洁度仅能保持在▽_6以下,严重 Traction motor commutator surface finish and shape accuracy affect the traction motor commutation and balancing performance, in order to ensure the quality of the motor, the product drawings require SS, electric locomotive traction motor commutator surface finish ▽ _8, Dongfeng 4 diesel locomotive Traction motor commutator surface finish ▽ _7, vertical tolerance of 0.02 mm. Improve the front commutator processing can not reach the design requirements, the processing technology is: one end of the commutator clamped in the front chucks, the other end of the movable support tailstock thimble, with pad technology hole method to amend the verticality to Carbide knife for processing, the finish can only be maintained below ▽ _6, serious