Local drawing and molding technology for rear cover plate of front section of automotive girder

A technology of automobile longitudinal beam and forming process, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problem of a large number of processes, and achieve the effect of saving materials and low cost

Active Publication Date: 2011-01-12
CHONGQING PINGWEI AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

[0005] 2. The number of processes is relatively large: Generally speaking, making molds according to this type of process requires at least: drawing, trimming and punching, trimming, slitting and punching, side punching, flanging, shaping and turning holes to make it.

Method used

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  • Local drawing and molding technology for rear cover plate of front section of automotive girder
  • Local drawing and molding technology for rear cover plate of front section of automotive girder
  • Local drawing and molding technology for rear cover plate of front section of automotive girder

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Embodiment Construction

[0029] The local drawing and forming process of the rear cover plate of the front section of the automobile longitudinal beam proposed by the present invention adopts the method of blanking first, and then partial drawing + forming flanging. The specific process is as follows:

[0030] (1) Blanking

[0031] First determine the blanking line: we press the product Figure 5 The thick line I shown is a dividing line, which divides the product into a first area A and a second area B. In the first area A, due to the simple shape of the product, the material does not flow during forming, or there is little local flow, so only forming and flanging processes are required. In the second area B, due to the complex shape of the curved surface of the product, a large amount of material will flow during the forming process, so a drawing process is required.

[0032] Forming and flanging of the first area A. During the forming and flanging process of the material, because the material doe...

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Abstract

The invention relates to local drawing and molding technology for a rear cover plate of a front section of an automotive girder. In the technology, a mode of blanking first and then locally drawing, molding and flanging is adopted to modify the conventional drawing technology and a molding structure aiming at parts per se is formed. A position needing drawing is locally drawn; a position which does not need drawing and only needs molding or flanging is subjected to the molding and flanging technology. The technology can reduce the processing cost and material cost to the greatest degree.

Description

technical field [0001] The invention belongs to the technical field of material forming. Background technique [0002] The front rear cover of the longitudinal beam of the car is a product that connects the front longitudinal beam and the front floor of the car and installs the battery on it. The rear cover of the front section of the longitudinal beam of the car is divided into two parts, left and right, and its shape is as follows: figure 1 and figure 2 shown. The usual way to produce such parts is to adopt the process of combining left and right parts (common molding and common materials). The reason why this process is usually adopted is because if figure 1 and figure 2 The profile shape of the circle shown in is complex, and the material will generate a large amount of material flow in these two places during the forming process. If the ordinary molding process is adopted, the material flow direction in these two places cannot be controlled, and the rebound of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/22B21D37/10
Inventor 杨晓东刘少强
Owner CHONGQING PINGWEI AUTOMOBILE TECH CO LTD
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