Manufacturing method of split-type gear case body

Abstract

The invention discloses a manufacturing method of split-type gear case body which is implemented by manufacturing the joint face and the bearing seat hole reference of the gear case, manufacturing the bottom of the case body to ensure the size of the bottom to be within the limit of tolerance, thus greatly enhancing the pass percent of the product, and improving the condition of lower production efficiency brought by manual polish.

Description

technical field [0001] The invention relates to a processing method, in particular to a processing method for a split gear box body, and belongs to the technical field of mechanical processing. Background technique [0002] At present, the gearbox used on the subway usually adopts a split box, and the bottom of the box is processed to ensure that the addendum circle of the driven gear has a sufficient distance from the bottom of the box, and at the same time, the thickness of the bottom of the gearbox is ensured. In the previous processing process, the parting surface, bearing seat hole and the inner side of the box bottom are usually processed during rough machining, and the parting surface, bearing seat hole and the outside of the box bottom are processed during finishing. Both the inner and outer sides are based on the parting surface and the bearing seat hole. Therefore, the thickness of the thinnest part of the bottom of the box is often out of tolerance. If the thickne...

AI Technical Summary

Problems solved by technology

In the previous processing process, the parting surface, bearing seat hole and the inner side of the box bottom are usually processed during rough machining, and the parting surface, bearing seat hole and the outside of the box bottom are processed during finishing. Both the inner and outer sides are based on the parting surface and the bearing seat hole. Therefore, the thickness of the thinnest part of the bottom of the box is often out of tolerance. If the thickness is too large, it must be corrected by manual grinding. If the thickness is too small, the entire box will be scrapped.

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