Overall Composite Bulging Technology of Automobile Drive Axle

A drive axle, bulging technology, applied in the field of machining, can solve the problems of difficult to control bulging force, heavy weight, easy to produce cracks, etc.
CN102886427BInactive Publication Date: 2014-10-22CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2014-10-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an integral compound bulging process for an automotive driving axle. The process comprises the following steps of: 1) placing an opened axle housing workpiece into an external bulging mold; 2) extending the internal bulging mold into a bulged deformed area of the axle housing workpiece from an inner hole at one end of the axle housing workpiece; 3) closing the external bulging mold; 4) applying equal thrust parallel to the axial direction of the axle housing workpiece to the internal bulging mold by utilizing thrust devices at the two ends of the internal bulging mold respectively, and applying pressure perpendicular to the axial direction of the axle housing workpiece to an upper module and a lower module by utilizing a pressure generation device, wherein the thrust is decomposed into a perpendicular thrust component which acts on the upper and lower module and is perpendicular to the axial direction of the axle housing workpiece and a parallel thrust component parallel to the axial direction of the axle housing workpiece under the action of a link mechanism, bulging force on the axle housing workpiece is the resultant force of the perpendicular thrust component and the pressure, and the axle housing workpiece is bulged and deformed under the action of the bulging force; and 5) performing unloading and demolding.
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Description

technical field

[0001] The invention belongs to the technical field of mechanical processing, in particular to an overall composite bulging process of an automobile drive axle. Background technique

[0002] The automobile manufacturing industry plays a pivotal role in my country's national economy. In recent years, my country's national economy has developed rapidly, and at the same time the automobile industry has also flourished. From the whole vehicle to the performance of the components, it has become the main subject of current industrial research, and the axle housing is one of the important parts of the automobile. The axle housing not only supports the automobile, but also serves as the differential and the final drive And the housing that drives the wheel drive. The quality of the automobile axle housing has a great influence on the performance of the vehicle. The axle housing not only needs to have sufficient strength, stiffness and fatigue life, but also has a si...

Claims

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