B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 28/28 (2006.01) B21D 26/02 (2006.01)
Patent
CA 2549547
The invention concerns the design of punches for producing holes in the walls of hollow parts, whereby the part, during punching, is subjected to the action of a high pressure by a medium. Particularly when producing hollow parts in an internal high-pressure shaping process, it is common, after the shaping and when the part is still located inside the shaping tool, to place holes in the wall. In order to prevent a drop in the internal high-pressure when cutting through the wall of the part, the punch (1) is, in its area penetrating the part (2), provided with a shape that is diagonally tapered toward the cutting edge (3). This effects a sealing during punching.
L'invention concerne la conception d'un poinçon permettant de réaliser des perforations dans les parois de composants creux. Lors de la perforation, l'intérieur du composant creux est alimenté en haute pression par un agent. Notamment lors de la production de composants creux selon le procédé de façonnage par haute pression interne, il est usuel de réaliser des perforations dans la paroi consécutivement au façonnage et lorsque le composant se trouve encore dans le moule de façonnage. Pour éviter une chute de la haute pression interne lors de la séparation de la paroi du composant, le poinçon (1) se distingue par la forme de la zone qui pénètre dans le composant (2), cette forme étant effilée coniquement jusqu'à l'arête de coupe (3). Cela permet d'obtenir une étanchéification de la perforation lors de la perforation.
Kuschel Stephan
Schmuck Frank
Schult Jens
Daimler Ag
Daimlerchrysler Ag
Kirby Eades Gale Baker
LandOfFree
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