Automobile rear axle shaft forging forming technology

Abstract

The invention discloses an automobile rear axle shaft forging forming technology, and relates to the technical field of automobile rear axle shaft machining. The technology comprises the steps that (1) feeding is conducted, specifically, a round bar of which the diameter is D and the length is L is selected; (2) blank heating is conducted, specifically, the round bar is heated in a medium-frequency electric induction furnace; (3) rear axle shaft rod part roll forging forming is conducted, specifically, the roll forging pass n is calculated, a die groove system is selected, and a workpiece is clamped by a mechanical hand to be subjected to roll forging in all passes of roll forging dies; and (4) rear axle shaft head part roll forging forming is conducted, specifically, the last pass of a roll forging piece is horizontally moved onto an upsetter, the head is subjected to primary upsetting after positioning and clamping, and a flange plate part of a rear axle shaft is obtained. Accordingto the automobile rear axle shaft forging forming technology provided by the invention, the production efficiency is high, and the product quality is good.

Description

technical field [0001] The invention relates to the technical field of automobile rear axle half shaft processing, in particular to an automobile rear axle half shaft forging forming process. Background technique [0002] The rear axle shaft, also known as the drive shaft, is an important part of the car transmission system. It is connected between the differential and the driving wheel and is used to transmit the torque between the driving wheel and the differential. The structure can be roughly divided into three parts: rod, spline and flange. Because the half shaft is easy to cause microcracks and fatigue fracture under the action of complex stress during the driving process of the car, so the half shaft is one of the parts with the highest demand among the important components of the car. Considering the importance of the structure and performance of the half-shaft, the production quality of the half-shaft must also be improved accordingly. We are required to improve pr...

AI Technical Summary

Problems solved by technology

Among the several processes designed by this scheme, it is necessary to gather materials more than three times to complete a product, the degree of automation is low, and the production efficiency of half-shaft forgings is low.

[0015] Since the second and third process schemes all use the process of forming the head flange by upsetting the stem first, it is necessary to select the diameter of the characteristic section with the smallest diameter of the stem as the diameter of the blank when selecting materials, and carry out multiple rounds. Upsetting and forming the rod part, this process is prone to folding, and requires manual operation, resulting in low production efficiency

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