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US 9,308,953 B2Granted
Method for the production of a hot formed and press hardened motor vehicle body structure, and motor vehicle body structure
AssigneeBenteler Automobiltechnik GmbH
InventorWilhelm Arns
Life of this patent
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Abstract
In a method of making a motor vehicle body structure, at least one region of a sheet metal plate of hardenable steel sheet is pierced using a blanking and/or cutting process. The at least one region of the sheet metal plate is preformed into a preform which is then hot formed in a hot forming tool and press hardened.
Claims20
A method of making a motor vehicle body structure, comprising in the following order:
- perforating at least one region of a sheet metal plate of hardenable steel sheet by a blanking and/or cutting process;
- preforming the at least one region of the sheet metal plate into a preform, wherein the preform is configured as a inwardly directed collar to project beyond only one side of the sheet metal plate so that an opposite side thereof is planar;
- and
- hot forming the preform in a hot forming tool.
1 more element
A method of making a motor vehicle body structure, comprising in the following order:
- perforating at least one region of a sheet metal plate of hardenable steel sheet by a blanking and/or cutting process;
- preforming the at least one region of the sheet metal plate into a preform, wherein the preform is configured as collar having a convex portion that faces toward one side of the sheet metal plate and projects beyond only the one side of the sheet metal plate so that an opposite side thereof is planar;
- and hot forming the preform in a hot forming tool.
Dependencies are inferred from the claim text.