Method for producing a motor vehicle component from an extruded light metal profile

Patent metadata

Field	Value
Publication number	US-2017209910-A1
Application number	US-201715411614-A
Country	US
Kind code	A1
Filing date	Jan 20, 2017
Priority date	Jan 22, 2016
Publication date	Jul 27, 2017
Grant date	—

Abstract

A method for producing a motor vehicle component from a light metal alloy includes: extruding an extruded profile with, in cross section, at least two mutually different wall thicknesses and at least one closed hollow chamber and with an extrusion width, at least partially flattening and/or widening the cross section to a processing width, wherein the processing width is greater than the extrusion width, before or after the flattening and/or widening, performing separation to form blanks, processing the blanks by deformation to form the motor vehicle component.

First claim

1 . Method for producing a motor vehicle component from a light metal alloy, comprised of the following method steps:
extruding an extruded profile with, in cross section, at least two mutually different wall thicknesses and at least one closed hollow chamber and with an extrusion width, at least partially flattening and/or widening the cross section to a processing width, wherein the processing width is greater than the extrusion width before or after the flattening and/or widening, performing separation to form blanks, processing the blanks by deformation to form the motor vehicle component.

2 . Method according to claim 1 , wherein the at least one hollow chamber is still maintained after the flattening and/or widening, or in that the at least one hollow chamber is flattened.

3 . Method according to claim 1 , wherein the at least one hollow chamber is cut in the extrusion direction, such that, in the extrusion direction, the hollow chamber is formed only in portions.

4 . Method according to claim 1 , wherein that the extruded profile has at least one hollow chamber with at least one flange projecting on one side, with flanges preferably projecting on two sides.

5 . Method according to claim 1 , wherein at least two hollow chambers are formed adjacent to one another, or in that at least two hollow chambers are formed so as to be connected by a web.

6 . Method according to claim 1 , wherein the at least one hollow chamber is reduced in height and/or increased in width during the widening and/or flattening.

7 . Method according to claim 1 , wherein the flattened/widened blank or the flattened/widened extruded profile is cut at an angle of between 0 and 90 degrees, in particular between 5 and 85 degrees, with respect to the extrusion direction such that a component length of the motor vehicle component to be produced is greater than the processing width.

8 . Method according to claim 1 , wherein a 5000 series or 6000 series or 7000 series aluminum alloy is extruded, wherein preferably, an extruded profile with a width of 30 mm to 500 mm and a wall thickness of 1 to 10 mm is extruded.

9 . Method according claim 1 , wherein the processing width is greater than 300 mm, and in particular, the processing width is greater than 400 mm, preferably greater than 500 mm and in particular up to 1500 mm, very particularly preferably up to 1200 mm, and/or in that the processing width is at least 10% greater, perfectly at least 20%, in particular at least 30% greater, than the extrusion width.

10 . Method according to claim 1 , wherein the deformation is performed in a progressive tool, in particular in a 6-stage progressive tool.

11 . Method according to claim 1 , wherein the progressive tool performs at least two of the following process steps: elongating the blank, edge cutting of the blank, deformation to form the motor vehicle component, hole punching, hole forming.

Assignees

• Benteler Automobiltechnik Gmbh

Inventors

• Clausen Edvin List
• Hitz Andreas
• Kavik Tobias Svantesson
• Bastani Amin Farjad

Classifications

• B21D35/005

  characterized by the material of the blank or the workpiece (B21D26/053 takes precedence) · CPC title

• B21D37/08

  Dies with different parts for several steps in a process · CPC title

• B62D29/008

  predominantly of light alloys, e.g. extruded · CPC title

• B21C35/023

  Work treatment directly following extrusion, e.g. further deformation or surface treatment  (B21C35/03 takes precedence; gas treatment B21C23/009) · CPC title

• B21C23/14

  Making other products · CPC title