Vehicle rear axle assembly breast beam production method and special-purpose mold therefor

Abstract

The invention relates to a manufacturing method of a front beam of a vehicle rear axle assembly. The front beam of the vehicle rear axle assembly processed by the method is good in performance and long in service life. The invention also provides a special mould of the manufacturing method of the front beam of the vehicle rear axle assembly. The manufacturing method comprises the following steps: blanking, bending pipes, shaping of the middle part and local bending, shaping, reshape punching and drilling on heads of two ends of a workpiece. The special mould consists of a shaping mould and a local bending mould, while the local bending mould consists of an upper mould structure and a lower mould structure. The special mould is characterized in that a fixed stent is arranged on the lower mould; an overturn-board stent is arranged on the fixed stent through a shaft; a hydraulic core pulling device is arranged on the overturn-board stent and a core pulling stick is connected with a piston rod of a hydraulic cylinder through a universal joint; a special shaping mould which consists of an upper mould and a lower mould is characterized in that a wedge block is fixed on a slide block; a core stick is fixed on the slide block; a side-arranged Z-font oblique wedge punctures the wedge block, and the upper straight end part of the oblique wedge is connected with the upper mould while the lower straight end part of the oblique wedge extends into a through hole of the lower mould, which can guarantee the propulsion and the restoration of the core stick along the horizontal direction driven by the wedge block.

Description

(1) Technical field [0001] The invention relates to a manufacturing process and mold-related technologies, belongs to the automobile parts manufacturing industry in the mechanical processing industry, and specifically relates to a method for manufacturing a front beam of an automobile rear axle assembly and a special mold. (2) Background technology [0002] The development of the automobile rear axle assembly is very difficult, especially the front beam tubular part in the assembly, which has a strange shape, many holes, complicated procedures, difficult forming, and high technical content. There is no domestic precedent for successful development. Domestic manufacturers usually import from abroad, which increases the manufacturing cost of automobiles and increases the financial burden on users. (3) Contents of the invention [0003] In view of the above problems, the present invention provides a method for manufacturing the front beam of the automobile rear axle assembly....

AI Technical Summary

Problems solved by technology

[0002] The development of the automobile rear axle assembly is very difficult, especially the front beam tubular part in the assembly, which has a strange shape, many holes, complicated procedures, difficult forming, and high technical content. There is no precedent for successful development in China.

Domestic manufacturers usually import from abroad, which increases the manufacturing cost of automobiles and increases the financial burden on users

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