Sedan tubular V-shaped torsion beam stamping process

A torsion beam and tubular technology, which is applied in the production of tubular V-shaped torsion beams for cars, can solve the problems of reducing the strength and service life of tubular V-shaped torsion beams, and easily producing convex hulls, etc., achieving low production costs, simple processes, and guaranteed rigidity and the effect of intensity

Active Publication Date: 2014-07-30
天人汽车底盘(芜湖)股份有限公司
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  • Application Information

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Problems solved by technology

However, this process is prone to produce convex hulls at the intersection of the port expansion and t...

Method used

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  • Sedan tubular V-shaped torsion beam stamping process
  • Sedan tubular V-shaped torsion beam stamping process
  • Sedan tubular V-shaped torsion beam stamping process

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0030] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the present invention includes an inner V-shaped forming mold, an outer V-shaped forming port expansion mold, a port expansion mold, a first mandrel 3 , a second mandrel 12 and a third mandrel 24 . Car tubular V-shaped torsion beam stamping process of the present invention comprises the following steps:

[0031] The first step is to cut a circular tubular blank with a length of D=d+d', wherein d is the length of the tubular V-shaped torsion beam of a car to be produced, and said d'≥8mm. In this embodiment, preferably, d'=10mm, and the outer diameter of the blank is 89.7mm.

[0032] The second step is forming the inner V shape, inserting the first mandrel 3 at both ends of the blank, and putting the blank in...

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Abstract

The invention discloses a sedan tubular V-shaped torsion beam stamping process, which includes blanking, inner V shape forming, primary formed outer V shape port expansion, secondary port expansion and cutting, consequently, the original process of primarily stamping an inner V-shaped surface and an outer V-shaped surface and secondarily expanding the shape of the port is changed into primary inner V-shaped surface stamping, the port is then primarily expanded as the outer V-shaped surface is stamped, and the process of secondarily expanding the port is carried out. Not only is the production of a bump at the intersection between the port expansion and the middle V shape effectively prevented, but also the port is prevented from being cracked due to expansion, so that the rigidity and strength of a product are ensured; moreover, the process is simple, the number of the steps of the process are little, and the production cost is effectively controlled.

Description

technical field [0001] The invention relates to a stamping process of a tubular V-shaped torsion beam of a car, in particular, it is especially used for producing a tubular V-shaped torsion beam of a car. Background technique [0002] At present, the tubular V-shaped torsion beam of a car is stamped from a circular tubular blank, the middle part is composed of an inner V-shaped surface and an outer V-shaped surface, and the two ends are rectangular tubular, and the rectangular tubular shapes at both ends are bulged. The existing punching process of the tubular V-shaped torsion beam of a car is to first stamp two V-shaped surfaces inside and outside, and then expand the shape of the port twice. However, this process tends to produce a convex hull at the intersection of the port bulge and the middle V-shape, thereby reducing the strength and service life of the tubular V-shape torsion beam of the entire car. Contents of the invention [0003] The technical problem to be sol...

Claims

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Application Information

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IPC IPC(8): B21D53/88
Inventor 彭开懿刘成任昱衡周军
Owner 天人汽车底盘(芜湖)股份有限公司
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