Gear lapping method of face gear

Abstract

The invention relates to a gear lapping method of a face gear, and belongs to the technical field of mechanical processing. A gear surface A and a gear surface B are subjected to alternatively attaching and match-lapping by a swing mechanism; the size of the tangential force is changed, and when the area of the toothed surface is increased, the positive pressure between the gear surfaces is increased, and when the area of the toothed surface is reduced, the positive pressure between the gear surfaces is reduced, and thus the accuracy problem caused by sharpening of the gear top is avoided. During the gear lapping process, match lapping of one-side gear surface is always performed under the action of the positive pressure, and the processing efficiency is higher; an upper gear disk is lifted upwards along one-side gear surface and then falls down by a stroke and then the other-side gear surface is subjected to match-lapping, abrasive is timely replaced, and furthermore the processing efficiency is increased; the size of the positive pressure changes according to the area of the toothed surface, and sharpening of the gear shape is avoided, the processing precision is higher; in the micro-scale, the processing principle mainly uses scraping and cutting, the microstructure of the toothed surface is good, and processing of a high-precision face gear disk is facilitated.

Description

technical field [0001] The invention relates to a method for grinding end teeth, which belongs to the technical field of mechanical processing. Background technique [0002] The end tooth plate is composed of a pair of "face gears" with the same number of teeth, modules, and tooth shapes. It is a high-precision angle standard component. It can be used as an indexing device for precision machining, and can also be used as an angle reference for Precision measurement. In order to process the ultra-precision end sprockets with indexing accuracy above 0.2″, it is necessary to grind the teeth on special equipment. [0003] The existing end gear grinding machine adopts figure 1 In the impact grinding method shown, the lower toothed disc is fixed on the worktable, and the upper toothed disc is lifted and lowered vertically. During the entire stroke of the reciprocating motion of the upper gear plate, the grinding occurs only at the moment when the lowering turns to lifting, and ...

AI Technical Summary

Problems solved by technology

During the reciprocating motion of the upper gear plate, the tooth surface A is always in contact with the lower gear plate, and the processing efficiency is high. In order to make the cutting amount of the tooth surface B the same, it is necessary to manually reverse the tangential force P at regular intervals, and the degree of automation of the equipment is low. ;During the grinding process, the tooth surfaces are always attached together, and the abrasive cannot enter the gap between the tooth surfaces, so the improvement of processing efficiency is limited; under the action of a constant tangential force P, it will produce a similar plane scraping The collapse of the edge causes the tip of the tooth to become sharp, which affects the machining accuracy of the end tooth disc

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