Method for forming whole axle housing of automobile drive axle

Abstract

The invention discloses a method for forming a whole axle housing of an automobile drive axle. The method comprises the steps that a steel tube processed through medium-frequency non-oxidation induction heating is squeezed, upset and pulled to reach the size and shape needed by a spindle nose; a groove is formed in the middle of the steel tube; the steel tube is placed into a lead groove in a drive axle housing Pipa hole forming device and locked; two hydraulic pumps are started to exert axial pressure to the two ends of the steel tube, so that the middle (with the smaller section) of the axle tube is in the deformation critical state; a guide column moves downwards and damages the balance of the axial force of the middle of the axle tube, and radial component force is generated and enables materials of the middle of the axle tube to expand and extend outwards to reach the preset size. According to the method for forming the whole axle housing of the automobile drive axle, the production process is simple and easy to operate, the axle housing does not directly penetrate through a weld joint and does not need spindle nose welding, the problems of axle housing deformation and oil leakage are solved, the heat treatment hardening and tempering technology is adopted, the general mechanical performance of the axle housing materials is improved, the strength and stiffness of the axle housing are improved, and the bearing property, reliability and fatigue durability of the axle housing are improved.

Description

technical field [0001] The invention relates to a manufacturing process and equipment for an automobile drive axle housing. To be precise, it is a processing method of rolling, extruding, expanding and rolling, and elongating technology of an integral axle housing of an automobile drive axle, and belongs to the technical field of basically no-cutting processing and forming of metal profiles. technical background [0002] The axle housing of the automobile drive axle is one of the main load-bearing components of the automobile. The drive axle is located at the end of the drive train, and its basic function is to increase the torque transmitted by the drive shaft or directly from the transmission, distribute the torque to the left and right drive wheels, and make the left and right drive wheels have the differential speed required by the driving kinematics of the car At the same time, the drive axle also bears the vertical force, longitudinal force and moment acting between t...

AI Technical Summary

Problems solved by technology

Compared with the steel plate stamping and welding axle housing and the steel pipe expansion welding axle head axle housing, the main disadvantages of the cast axle housing are: the casting quality is not easy to control, and the scrap rate is high; the product is heavy, energy-consuming, and pollutes the environment; the processing surface Many, complex manufacturing process

Including: ring welding shaft head, stress still exists, 16Mn material cannot be heat treated to improve its rigidity and strength, and cannot meet the technical indicators of heavy vehicles

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