Method for producing curved article and skeleton structure member for automobile body shell

一种制造方法、零部件的技术，应用在骨架结构构件领域，能够解决未公开制造等问题，达到减小余料、防止褶皱、改善材料利用率的效果

Active Publication Date: 2015-04-29
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Patent Documents 1 to 4 do not disclose a method of manufacturing a part having such a complicated shape as the bent part 10

Method used

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  • Method for producing curved article and skeleton structure member for automobile body shell
  • Method for producing curved article and skeleton structure member for automobile body shell
  • Method for producing curved article and skeleton structure member for automobile body shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0107] The present invention is described with reference to the drawings.

[0108] With the present invention it is possible to produce Figure 18A ~ Figure 18E The curved part 10 is shown.

[0109] Such as Figure 18A ~ Figure 18E As shown, the curved parts 10 are made of a top plate 11, longitudinal walls 12a, 12b, and outward flanges 13a, 13b, wherein the longitudinal walls 12a, 12b are connected to the two sides of the top plate 11 respectively, and the outward flanges 13a, 13b are connected to the two sides of the top plate 11. The ends of the vertical walls 12a and 12b on the side opposite to the top plate 11 are connected to each other, and extend in a direction opposite to the top plate 11, and the curved member 10 has a hat-shaped cross-sectional shape.

[0110] Ridge lines 14a, 14b are formed between the top plate 11 and the vertical walls 12a, 12b. Further, concave lines 15a, 15b are formed between the vertical walls 12a, 12b and the outward flanges 13a, 13b. Th...

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PUM

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Abstract

The present invention produces a curved article (10) having a hat-shaped cross section by means of press molding without generating cracks or wrinkles. When producing by means of press molding a curved article (10) having a roughly hat-shaped cross section comprising a top plate (11), vertical walls (12a, 12b) extending in parallel to each other along the ridge line (14a, 14b) of the top plate, and outward-facing flanges (13a, 13b) joined to the tips of the vertical walls, a starting material metal plate (601) is sandwiched and bound by a die (502) and a blank holder (505) and press molded while the starting material metal plate (601) is sandwiched and bound by a pad (503) and a punch (504).

Description

technical field [0001] The present invention relates to a method of press-forming a sheet metal to produce a curved part having a hat-shaped cross-section and a skeleton structural member of a body shell of an automobile. Background technique [0002] A press-formed part having a hat-shaped cross-section and an outer shape bent in the longitudinal direction is used as a skeleton structural member of an automobile body shell such as a side member (front side member, rear side member). This press-molded part is an important part for ensuring the crash performance of an automobile, and in order to promote the improvement of crash safety and the weight reduction of a vehicle body, it is required to increase the strength of the press-molded part. Conventionally, such press-formed parts have been produced by a press-forming method of deep-drawing a metal sheet. [0003] Figure 18A It is a perspective view showing an example of a curved part having a hat-shaped cross section (her...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/26B21D24/08B21D5/01
CPCB21D22/26B21D53/88B21D5/01B21D35/001Y10T428/12354B21D22/02B21D24/02B21D24/04B62D25/08
Inventor 麻生敏光田中康治宫城隆司小川操河野一之
Owner NIPPON STEEL CORP
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