Sheet-metal elements made of flexibly rolled material strip

Inactive Publication Date: 2005-01-20
MUHR UND BENNDER KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0031] Another preferred use of flat sheet-metal elements comprises a vehicle floor pan including the tunnel which can be composed of various sheet-metal elements which can be optimized with

Problems solved by technology

When manufacturing sheet-metal elements from material having uniform wall thickness, the areas exposed to lower loading are

Method used

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  • Sheet-metal elements made of flexibly rolled material strip
  • Sheet-metal elements made of flexibly rolled material strip
  • Sheet-metal elements made of flexibly rolled material strip

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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT IN THE DRAWINGS

[0045] In FIG. 1 there is an open U-form respectively rectangular profile 11, which in longitudinal direction has a variable wall thickness. Herein a first longitudinal portion 12 with a smaller constant wall thickness, a transition portion 13 with increasing wall thickness and a second longitudinal portion 14 with constant greater wall thickness are to be seen. The profile has a constant free inner cross section in the longitudinal direction.

[0046] In FIG. 2 there is shown an open profile 15 with half-round cross section, which has variable wall thickness in the longitudinal direction. Herein a first longitudinal portion 16 with smaller constant wall thickness, a transition portion 17, and a second longitudinal portion 18 with greater constant wall thickness are to be seen. The profile has a free inner cross section changing in the longitudinal direction.

[0047] In FIG. 3 there is shown a closed, mostly rectangular p...

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Abstract

The invention relates to sheet-metal elements made of flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip. A solution according to the invention consists in a sheet-metal element reshaped about the longitudinal direction of the strip or reshaped transverse to the longitudinal direction of the strip from a flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip to form a tube or profile body having an out-of-round cross-section and variable wall thickness over the length or over the circumference.

Description

[0001] The invention relates to sheet-metal elements made of flexibly rolled material strip having different thicknesses in the longitudinal direction of the strip. BACKGROUND OF THE INVENTION [0002] Flexibly rolled material strip is produced by rolling starting material having an initially constant thickness with variable roller gap thickness. Such rolling methods to produce flexibly rolled material strip and reshaping methods to produce sheet-metal elements therefrom are known from the prior art. [0003] DE-PS 104 875 describes how a strip-shaped or flat piece of sheet-metal is brought to different wall thicknesses by rolling out, and from the piece of sheet-metal having variable wall thicknesses thus obtained, a tube having different wall thickness in the longitudinal direction is bent round and soldered along the slit. [0004] From EP 0 788 849 A1 it is known to first roll a metal sheet such that parallel indentations are formed transverse to the direction of rolling, wherein the ...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21C37/15B21C37/16B21D51/16B21D53/88B62D21/15B62D29/00B62D65/00
CPCB21C37/02B21C37/15Y10T428/12389B62D29/00B62D65/00B62D21/157
Inventor HAUGER, ANDREAS
Owner MUHR UND BENNDER KG
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