Machining method of input shaft hub blind hole spline

Abstract

The input shaft hub blind hole spline processing method includes the following steps: S1. Fix the input shaft hub vertically and the blind hole opening of the input shaft hub faces upward; S2. Install and fix the blind hole spline punch on the lifting power equipment, and blindly The axis line of the hole spline punch coincides with the axis line of the blind hole of the input shaft hub; S3, the lifting power equipment drives the lower end of the blind hole spline punch at a constant speed into the blind hole of the input shaft hub, and squeezes the spline section against the blind hole The inner spline is extruded, and the middle spline guide section and the top spline guide section are sequentially engaged with the inner spline extruded through the extruded spline section; S4. The lifting power equipment drives the blind hole spline punch to reset, that is , The internal spline is processed on the wall of the blind hole of the input shaft hub.

Description

technical field [0001] The invention belongs to the technical field of input shaft hub processing, in particular to a method for processing input shaft hub blind hole splines. Background technique [0002] The structure of the input hub is shown in the appendix figure 1 , there is a blind hole inside, and the internal spline set on the wall of the blind hole. The main difficulty lies in the spline tooth shape of the inner hole. This is a spline in a blind hole, and the spline cannot be pulled, and only Can choose gear shaping processing, the efficiency is very low, so the cost is very high. [0003] Some inventors have designed to process internal spline teeth by means of extrusion. When extruding the spline, the current spline punch will be distorted, offset and twisted. The overall deformation generally exceeds 0.1mm seriously, but for the tolerance Only a spline of 0.1mm cannot be produced normally, so the scrap rate of the whole processing process is relatively high. ...

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