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南京钢铁厂有一些大型齿轮减速器,其齿轮模数为16～30mm,直径为2～3.5m,重20～30吨。这些大齿轮在正常运转若干年后,齿面出现疲劳点蚀及严重磨损,故而不能使用,予以报废。而做一个大齿轮备件,一般生产周期要壹年以上,费用需拾余万元. 我们应用高度变位的方法,将报废的大齿轮外径车去一个X_n·M_n值,再重新滚齿,将齿面点蚀的部分切除掉.大齿轮用负变位,小齿轮用正变位,加工后就成为传动参数均不变化的新齿轮副,从而使大齿轮得以修复,重新使用。 [例]中轧车间中有一件磨损后报废的人字大齿轮,m_n=16,z=170,齿面点蚀,坑深约2～3mm。我们经过研究,决定将此大齿轮进行高度变位修复,另行制造一件相配的小齿轮。
Nanjing Iron and Steel Plant has some large gear reducer, the gear modulus of 16 ~ 30mm, diameter of 2 ~ 3.5m, weighing 20 to 30 tons. After several years of normal operation of these large gear, the tooth surface fatigue fatigue and serious wear and tear, it can not be used, to be scrapped. To do a large gear spare parts, the general production cycle to more than one year, the cost should be collected more than ten thousand yuan. We apply a high degree of displacement of the method, the scrapped large gear OD car to a value of X_n · M_n, and re-hobbing, Pitting the surface of the partial cut off. Large gear with negative displacement, positive displacement of the pinion gear, after processing become the transmission parameters do not change the new gear, so that the gear can be repaired, re-use. [Example] In the rolling workshop there is a worn-out big bull’s tooth, m_n = 16, z = 170, pitting on the tooth surface and pit depth about 2 ~ 3mm. After our research, we decided to carry out a high degree of deformation of the gear, repair, otherwise create a matching pinion.