Component with locally limmited reinforcement regions and method for production thereof

Abstract

The invention relates to a component consisting of a high-strength sheet, in particular a structural component, which is provided with a deformation structure in a locally limited stiffening region, this deformation structure considerably increasing the local stiffness of the component compared with conventional components. The stiffness-increasing deformation structure consists of a periodic grid of concave and convex bulges nested one inside the other. It is embossed in certain, locally limited regions of the sheet by means of a deep-drawing method. The regular periodic grid structure of the stiffening pattern permits a computational simulation of the stiffnesses to be achieved and, as a consequence thereof, a systematic optimization of the stiffening structure for the respective component. The bulge depths may be locally varied inside the stiffening structure, as a result of which local variations in the stiffness of the component are specifically achieved inside the stiffening region.

1 . A component consisting of a high-strength sheet which is provided with a stiffness-increasing deformation structure in a defined, locally limited stiffening region which is especially important for the dimensional stability of this component, characterized in that the deformation structure ( 3 ) consists of a periodic grid of adjacent cells ( 17 ), each grid cell ( 17 ) containing concave and convex bulges ( 7 ,  8 ) nested one inside the other.  
     
     
         2 . The component as claimed in  claim 1 , characterized in that the deformation structure ( 3 ) has a hexagonal structure.  
     
     
         3 . A method of producing a locally limited, stiffness-increasing deformation structure on a component whose geometry is shaped from a sheet-metal billet of high dimensional stability by means of a drawing method, characterized in that the deformation structure ( 3 ), consisting of a periodic grid of concave and convex bulges ( 7 ,  8 ) nested one inside the other, is produced on the component by means of a drawing method.  
     
     
         4 . The method as claimed in  claim 3 , characterized in that the deformation structure ( 3 ) is shaped together with the component geometry in the same process step.