Plain-surface modifying machining Method for tooth surfaces of worm gears

Abstract

The invention relates to a plain-surface modifying machining method for tooth surfaces of worm gears. The plain-surface modifying machining method is used for milling the tooth surfaces in the height directions according to reference circles, and the widths of the tooth surfaces are equal to 1 / 2 of the tooth widths of the worm gear. The plain-surface modifying machining method includes steps of 1), machining finger-shaped milling cutters according to tooth profiles of the reference circles of the worm gears with milled teeth; 2), laying worm gear workpieces with the milled teeth on worktables of gear bobbing machines and aligning the worm gear workpieces; 3), adjusting the cutters according to the tooth surfaces at the reference circles, and machining the tooth surfaces according to lead angle adjusting differential mechanisms of worms until certain positions of the tooth surfaces are machined; 4), indexing and machining a next tooth surface after each tooth surface is completely machined; 5), machining a plurality of tooth surfaces according to assembly requirements, completely machining the tooth surfaces, coating oil on the tooth surfaces after the tooth surfaces pass inspection, and storing the tooth surfaces. The widths of the certain positions of the reference surfaces are equal to 1 / 2 of the tooth widths of the worm gears. Compared with the prior art, the plain-surface modifying machining method has the advantages that plain-surface modifying requirements on the tooth surfaces of the worm gears can be met, and the purposes of simultaneously placing the worm gears and the worms into boxes assembling the worm gears and the worms in the boxes can be achieved; machining procedures are simple, production procedures are easy to control, and requirements on the quality of products can be met; indexing functions of the gear bobbing machines can be sufficiently utilized, and accordingly the plain-surface modifying machining method is high in machining precision.

Description

technical field [0001] The invention relates to a tooth surface processing method, in particular to a worm wheel tooth surface straight-face modification processing method. Background technique [0002] Due to the large meshing friction of the worm drive, the difficulty of accurately shoveling the back of the worm gear hob, and the error in shape and size, it is difficult for the machined worm gear tooth surface to completely reach the conjugate state that meets the theoretical requirements with the matching worm tooth surface. When it cannot be adjusted to the best state, it is easy to cause the worm gear transmission to fail. [0003] The assembly process of the worm gear reducer is: fix the bearings at both ends of the worm gear and install the oil seal; put the worm gear into the lower box to adjust the position, cover the upper box and fix it; put the worm into the worm hole, install the worm bearing and the oil seal ; Compress the end cover of the worm wheel and seal ...

AI Technical Summary

Problems solved by technology

It can be seen that, restricted by the structure of the worm gear and worm transmission pair, it is impossible to put the worm gear and the worm into the box at the same time when assembling the worm gear reducer to visually check the transmission situation and make appropriate adjustments. If the transmission fails after assembly, it needs to be disassembled and reinstalled. It's very troublesome

[0004] At present, a new worm gear assembly method has emerged, which flattens half the tooth width of several tooth surfaces of the worm gear, so that the worm gear can be assembled in the box at the same time, but when it comes to the processing of tooth surface modification There is a certain degree of difficulty in the problem

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