Metalworking process of spline shaft fork of transmission shaft

Abstract

The invention discloses a metalworking process of a spline shaft fork of a transmission shaft. The metalworking process comprises the following steps of: carrying out quenching treatment by using a quenching automatic line; milling a small-head end surface and punching central holes at both ends by using a numerical control drilling and milling machine; respectively rough and finely machining allparts of the excircle and an R angle by using a numerical control machine; drilling two earholes by using a combined drilling machine; finely boring two earholes and scribing by using a numerical control milling machine; reaming, machining a circlip groove and machining the outer lateral surface of the two ears by using the numerical control machine; milling a spline by using a numerical control spline milling machine; rounding and deburring; and quenching at a medium frequency by using a medium-frequency quenching machine. The invention can ensure the accuracy of spare parts to the maximum extend, eliminates various errors caused by positioning reference conversion, shortens the whole metalworking process flows, can reduce a great amount of labor and materials, greatly decrease the processing cost, lighten the labor intensity, improve the labor efficiency and save the processing cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a metal processing technology of a transmission shaft spline shaft fork. Background technique [0002] The use requirements of the automobile transmission shaft assembly are quite special. It needs to rotate at a high speed when transmitting torque, and as people's requirements for the humanization of automobile design and the comfort of automobile passengers are getting higher and higher, the dynamics of the transmission shaft assembly The requirements for balance accuracy and residual unbalance value are also getting higher and higher. The existing drive shaft spline shaft fork is processed by ordinary stand-alone equipment, and the processing process has a total of sixteen processes, which are as follows: [0003] ⑴, use pit furnace for normalizing treatment; [0004] ⑵. Use a special fixture to clamp it to the drilling and milling machine, mill the...

AI Technical Summary

Problems solved by technology

[0020] ⑴. The dimensional accuracy of processed products is not high, resulting in excessive residual unbalance value after assembly, design accuracy is not easy to guarantee, and production efficiency is low;

[0021] (2) The process cycle is long, labor-intensive, time-consuming and labor-intensive, and cannot meet actual production needs;

[0022] ⑶. Switching (production preparation) takes a long time, which does not meet the requirements of lean production methods