US 11,999,413 B2
Method for manufacturing a motor vehicle structural component from an extruded multichamber hollow profile
Gaurav Ahuja, Lasalle (CA); Vijay Michael, Grand Rapids, MI (US); Per Ivar Stemnes, Raufoss (NO); and Jochem Grewe, Salzkotten (DE)
Assigned to BENTELER AUTOMOBILTECHNIK GMBH, Paderborn (DE)
Filed by BENTELER AUTOMOBILTECHNIK GMBH, Paderborn (DE)
Filed on Dec. 1, 2021, as Appl. No. 17/539,239.
Prior Publication US 2023/0166799 A1, Jun. 1, 2023
Int. Cl. B62D 29/00 (2006.01); B21C 23/12 (2006.01); B21C 23/14 (2006.01)
CPC B62D 29/008 (2013.01) [B21C 23/12 (2013.01); B21C 23/142 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for manufacturing a motor vehicle structural component from an extruded multichamber hollow profile, with the following steps:
a) provision of an extruded profile with at least two precursor hollow chambers which are separated from one another by an inner wall, wherein at least one outer wall of at least one precursor hollow chamber, in cross-section perpendicularly to a longitudinal extent of the extruded profile, has a region with non-linear course,
b) forming of the extruded profile over an entire longitudinal extent of the extruded profile into the motor vehicle structural component, wherein at least the region with non-linear course of the at least one outer wall of the at least one precursor hollow chamber, with non-linear course in cross-section, is at least partially straightened, with a change in cross-section of the respective precursor hollow chamber into the cross-section of the corresponding hollow chamber of the motor vehicle structural component, and wherein the inner wall remains unchanged during the forming of the extruded profile,
wherein at least on an outer wall of at least one precursor hollow chamber, a non-linear web is arranged which is at least partially straightened in step b).