Split-type automobile rear-axle housing assembly welding method

Abstract

The invention discloses a split-type automobile rear-axle housing assembly welding method, which includes the following steps: half-axle housing pressing manufacturing, semi-axis casing pipe machine processing, rigid positioning assembly for semi-axis casing pipes and an axle housing body, welding of the axle housing body and semi-axis casing pipes, accessory assembly welding and integral detection and correction. Through adjusting the assembly sequence of the semi-axis casing pipes and the axle housing body, after a group of simple rigid positioning clamps is added, the traditional axle housing body port boring procedure and the semi-axis casing pipe press-in procedure are eliminated, production line investment is greatly reduced, raw material cost is saved, product quality and working efficiency are improved, and production period of the product is shortened; and the manufactured automobile rear axle housing by adopting the assembly welding method is low in cost, good in quality and short in manufacturing period, can effectively improve market competitiveness of the product, and has better market prospect.

Description

technical field [0001] The invention relates to the technical field of automobile parts manufacturing, in particular to a split-type automobile rear axle housing assembly welding method. Background technique [0002] The automobile rear axle housing is a key part of the automobile chassis, which is directly related to the load-bearing performance and service life of the automobile chassis. The rear axle housing of the automobile is mainly assembled and welded by parts such as the axle housing body, half shaft casing and leaf spring seat. The axle housing is assembled and welded later, and the half-shaft casing and the axle housing body are connected by interference fit, pressing and welding. [0003] At present, the assembly and welding process steps commonly used in the axle industry for axle housings are as follows: [0004] ①. Production of the half-axle housing: After the plate is lofted and blanked, it is pressed to form a symmetrical upper half-axle housing and lower...

AI Technical Summary

Problems solved by technology

[0015] In addition to conventional welding and processing tools, it is also necessary to configure a double-head boring machine and a double-head press, which requires a large investment;

[0016] 2. There are quality defects in the product

[0017] Due to the welding deformation of the axle housing body after welding, there must be a certain degree of ellipticity and coaxiality deviation between the ports on both sides. When boring the inner wall of the port, steps will be formed between the processed area and the unprocessed area, resulting in local stress concentration of the workpiece and affecting product quality. ;

[0018] 3. High cost of raw materials

[0019] When the inner wall of the port is bored after the axle housing body is welded, the wall thickness of the axle housing will inevitably be partially thinned, which will affect the strength and stiffness of the axle housing. To ensure the strength and stiffness, the feeding thickness of the axle housing body must be thickened, so that Increased input costs of raw materials;

[0020] 4. Low work efficiency

[0021] Due to many processing procedures, especially the port boring work efficiency of the axle housing body is low, and the coaxiality deviation is relatively large after the half-shaft sleeves at both ends are press-fitted and welded, and the correction is difficult, which further reduces the work efficiency

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