Kirchhoff Automotive Deutschland Gmbh

Schwartz Gmbh

Markus Löcker

Marco Töller

Axel Schrooten

Rolf Schwarzer

Christian Lenkenhoff

Harald Lehmann

Marc Horlacher

Marco TÖLLER

Stefan Arpad Szabo

Franz Josef Lenze

Alexander Wilden

A method to produce a molded part having at least two regions of different strength using a press-hardening tool. A heated blank is formed in the tool during a forming step and held therein for heat-treating during a cooling step. At least one region of lower strength is cooled more slowly than at least one region of higher strength. During the forming step, the entire blank is in contact with a molding surface of the tool. Then, the tool surface is changed such that one or more regions of lower strength have no tool contact during the cooling step. The tool surface associated with the one or more regions of lower strength is provided by tool segments that are adjustable relative to the remaining tool surface. The molding surface of the one or more tool segments is larger than the region of lower strength associated with such tool segment.

Method for producing a press-hardened molded part, and press-hardening tool

The invention relates to a method for producing a shaped and at least regionally hardened sheet metal component, particularly a sheet steel component (), with at least one perforation () produced in it, in which method a preform () is heated to forming temperature, subsequently shaped and then at least regionally hardened by corresponding cooling, wherein the at least one perforation () in the preform () is produced during the course of a punching process before the preform () is hardened. According to the invention, the metal piece () separated from the preform () by punching is fed back to its original position or a corresponding position in the perforation (), remains there for the duration of the quenching process and is only pressed out during or after removal of the sheet steel component () from the die (), in which it is held during quenching. The invention also describes a quench press die () for producing a shaped and at least regionally hardened sheet metal component, particularly a sheet steel component (), with at least two die parts () adjustable against one another for opening and closing the die () and with a punching device () comprising a punching die () for producing a perforation () in a preform () located between the die parts (). The die part (), against which the punching die () for producing the perforation () works, has a return punch (), the actuation side of which points towards the punching die () and the axis of motion of which corresponds to the axis of motion of the punching die (), such that a metal piece () separated from a preform () by means of said punching die () can be returned to the correct position, or approximately to the correct position in the perforation () produced in the preform () by the punching process to fill said perforation.

Method for producing a formed and at least regionally hardened sheet metal component

The invention relates to a vehicle bumper assembly () having a bumper cross-member () and at least two energy-absorption components (), which are arranged at a distance from one another and which are connected to the rear side of the bumper cross-member () and supported thereon by means of a first end. The energy-absorption components have an x-direction absorption effective direction oriented perpendicular to the y-axes longitudinal extension of the bumper. The energy-absorption components () are designed to be supported on a chassis part () of a vehicle by means of the end of the energy-absorption components pointing away from the bumper cross-member, wherein the energy-absorption component () has a slanted end face () in the direction toward the bumper cross-member (). According to the invention, the entire or substantially the entire end face () of the energy-absorption component () is supported on the rear side of the bumper cross-member (), and the plane of the end face () of the energy-absorption component () facing the bumper, and thus the bumper cross-member (), is oriented such that the front side thereof is arranged at an angle to the plane extending orthogonally to the force application direction of the AZT structure test.

Vehicle bumper assembly

Growing community of inventors

Finnentrop, Germany

Markus Löcker