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一、前言在重型机器制造业中,弧面蜗轮传动副蜗杆的齿形,一般是用两把或多把车刀按形成原理沿弧面进行车削成形。这种工艺方法,由于只是车刀刃切削蜗杆成形,不能满足弧面蜗轮副传动中的接触要求,因而,给装配带来了大量的跑合刮研工作量;更为严重的缺点是蜗杆只能做成软齿面,使硬度、精度、光洁度都达不到要求,致使蜗轮副的使用寿命受到严重影响,工作性能得不到充分发挥。为了克服上述工艺缺点,近年来,国内一些单位,对以最简单的平面作母面的平面二次包
I. Introduction In the heavy machinery manufacturing industry, the worm gear of a worm gear driven by a cambered worm gear is usually formed by turning the arc along two or more turning tools according to the principle of formation. This kind of craft method, because it is only the cutting edge of the cutting tool forming, can not meet the contact requirements of arc worm gear transmission, thus, to the assembly brings a lot of running and scraping workload; more serious drawback is the worm can only Made of soft tooth surface, the hardness, accuracy, finish are not up to requirements, resulting in a serious impact on the service life of the worm gear, work performance can not be given full play. In order to overcome the shortcomings of the above process, in recent years, some domestic units, to the simplest plane as the mother of plane secondary package