Machining process of spline shaft

Abstract

The invention discloses a machining process of a spline shaft. The process comprises the steps that a bar is cut off through a sawing machine, and the bar with the preset length is obtained; the bar is subjected to isothermal normalizing heat treatment; the large end of a workpiece is clamped, and a central hole in the small end surface is turned and drilled; the large end is clamped, the centralhole of the small end is abutted against, and rough turning is conducted on an outer circle of the bar; quenching and tempering are carried out on the workpiece subjected to rough machining, the workpiece is straightened through a straightening machine, and stress relief annealing treatment is carried out; the total length of two end faces is turned; fine turning is carried out on an outer circle,a step surface and a shaft neck on the small end side; a small-end external spline is processed; a large-end inner hole is finely turned to a preset size; a large-end internal spline and a large-endexternal spline are processed; whether the jerk values and the sizes of the external spline and the internal spline reach the standard or not is detected; gas nitriding treatment is carried out on thesurface of the workpiece, wherein the nitriding depth is 0.2-0.4 mm; and a finished product is packaged after final detection. According to the machining process of the spline shaft, the structural strength of the workpiece is high, the internal strength toughness of the workpiece is high, and the outer surface hardness is high.

Description

technical field [0001] The invention relates to the technical field of transmission shaft processing, in particular to a processing technology of a spline shaft. Background technique [0002] The spline shaft is a part used for mechanical transmission. The function of the keyway is not only to transmit mechanical torque like a flat key, a half-round key, and an oblique key, but also to realize axial sliding while rotating. The number of circumferential key grooves of the spline shaft is more than that of the flat key structure, so the force transmission effect is better, it can bear greater torque, and the transmission synchronization is also better. [0003] In the traditional processing method, the transmission shaft and the spline sleeve are often processed separately, and finally combined to form the transmission shaft. Although the production speed of this method is faster, the overall strength is weakened, and two sets of processing are required for separate production...

AI Technical Summary

Problems solved by technology

[0003] In the traditional processing method, the transmission shaft and the spline sleeve are often processed separately, and finally combined to form the transmission shaft. Although the production speed of this method is faster, the overall strength is weakened, and two sets of processing are required for separate production. equipment, which increases the equipment cost and labor cost of production

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