Machining method to ensure coaxiality of inner and outer splines of hollow shaft

Abstract

The invention discloses a machining method for guaranteeing the coaxiality of internal and external splines of a hollow shaft. According to the method, the internal and external splines of the hollow shaft are machined according to the following steps that first, the left end face, the left end outer circle and a left end hole of the hollow shaft are roughly turned, and the right end face, the right end outer circle and a right end hole of the hollow shaft are roughly turned; second, the two ends of the hollow shaft are provided with plugs, and a center hole is punched in each end; third, the left end outer circle and the right end outer circle of the hollow shaft are positioned through the center holes in the two ends to be fine turned; fourth, the left end outer circle of the hollow shaft is ground, and an end face A is ground in an abutting mode; fifth, the right end outer circle of the hollow shaft is ground, and an end face B and an end face C are ground in an abutting mode; sixth, the plugs are removed; seventh, with the left end outer circle of the hollow shaft and the end face A as alignment reference, the left end inner hole of the hollow shaft is ground, and an end face E is ground in an abutting mode; eighth, the left end internal spline of the hollow shaft is inserted in a gear shaping machine; ninth, a workpiece is directly placed on a workbench of the gear inserting machine and positioned through the end face E, the right end external spline of the hollow shaft is inserted, and therefore machining of the workpiece can be completed. It is guaranteed that the machining and positioning reference and the alignment reference of the internal and external splines of the hollow shaft are uniform, and the machining accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of processing internal and external splines of hollow shaft workpieces in the machinery manufacturing industry, in particular to a processing method for ensuring the coaxiality of internal and external splines of hollow shafts. Background technique [0002] At present, in the existing technology, the processing of ensuring the coaxiality of the inner and outer splines of the hollow shaft has been plagued by various processing technology fields. The positioning reference and alignment reference cannot be unified when processing the inner and outer splines. The process is: rough turning - grinding spline hole - plugging - punching center hole - finishing turning outer circle - grinding outer circle - removing blockage - inserting inner spline - inserting outer spline. At this time, the center of the inner spline hole and the center of the processed outer circle after plugging are not on the same center line. ...

AI Technical Summary

Problems solved by technology

The reason is that the center after grinding the hole is not the same as the center of the matching block, drilling the center hole, turning the outer circle, and grinding the outer circle, so the coaxiality of the inner and outer splines cannot be guaranteed.

That is to say, the process benchmark is not a benchmark, which affects the quality of product assembly, and the most important thing is to shorten the service life of the product

This processing method is far from meeting the current high-quality product design requirements

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