Grinding die for pinion of duplicate gear

Abstract

The invention discloses a grinding die for a pinion of a duplicate gear. The grinding die comprises an upper die base and a lower die base which are in sliding connection through a guide column, wherein a lower die for fixing the duplicate gear is arranged on the upper portion of the lower die base, the corresponding positions of the upper die base and the lower die base are connected with a tooth-shaped grinding device for grinding the pinion of the duplicate gear, and the tooth-shaped grinding device can move vertically relative to the lower die. By means of the technical scheme, the grinding accuracy is ensured, grinding errors are reduced, radial jumping caused by grinding of one gear is avoided simultaneously, and the positions of a rack wheel and the pinion are consistent. Production efficiency is improved, production cost is reduced, and the grinding die can be produced in volume mode. A rotary vector (RV) reducer is high in accuracy of rotating displacement, can ensure the accuracy of positioning of a grinding cutter and the gear and improves machining accuracy.

Description

technical field [0001] The invention relates to a gear processing technology, in particular to a grinding mold for a double gear pinion. Background technique [0002] At present, the commonly used gear grinding mainly adopts the operation process of rough grinding, semi-fine grinding and fine grinding. The main parameters of gear grinding performance testing are gear radial runout and tooth pitch deviation. The feed rate per stroke of rough grinding is slightly The maximum is basically 0.03mm, the feed rate per stroke for semi-fine grinding is 0.02mm, and the feed rate per stroke for fine grinding is 0.01mm. The speed of the grinding wheel for coarse grinding is also different from that of fine grinding. This kind of grinding method can still achieve the 6-level accuracy of the gear tooth shape and tooth direction, but when the values ​​of the tooth pitch deviation and radial runout are strictly supervised, the phenomenon of exceeding 6-level tolerance often occurs. The ra...

AI Technical Summary

Problems solved by technology

But it is precisely because of the influence of this regular grinding wheel that the tooth profile of the first tooth that has just been ground by the grinding wheel and the last tooth that will be ground when the grinding wheel is blunt is obvious in the tooth pitch deviation. The difference is shown, and such grinding operations are repeated during semi-fine grinding and fine grinding, and the error gradually accumulates, which also forms the obvious beating of every few teeth on the entire left or right tooth surface of the gear.

Images