B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 26/02 (2011.01)
Patent
CA 2593395
A hydroforming apparatus for hydroforming a workpiece. The apparatus includes a die in which a die cavity is located, and an outer ring subassembly. The outer ring subassembly is movable relative to the die, and includes a ring and one or more first cam segments attached thereto. The outer ring subassembly also includes one or more second cam segments and one or more tapered wedges positioned between the first and second cam segments. The tapered wedge is movable between an extended position, in which the second cam segment is pushed to an open position in which the second cam segment is engageable with the outer surfaces when the subassembly is proximal to the die, and a retracted position, in which the second cam segment is moved to a closed position by a biasing means. The second cam segment includes a lower surface shaped to engage outer surfaces.
Un appareil d'hydroformage destiné à l'hydroformage d'une pièce de fabrication est décrit. L'appareil comprend un emporte-pièce comportant la cavité du moule, de même qu'un sous- ensemble de bague extérieure. Le sous-ensemble, mobile par rapport à l'emporte-pièce, comporte une bague à laquelle sont rattachés un premier segment de came ou plus, un second segment de came ou plus, ainsi que des coins placés entre les premier et deuxième segments de cames. Le coin peut être déplacé d'une position de sortie, dans laquelle le second segment de came est poussé en position ouverte d'embrayage par rapport aux surfaces externes lorsque le sous- ensemble est le plus près de l'emporte-pièce, à une position rétractée, dans laquelle le second segment de came est activé en position fermée. La surface inférieure du second segment de came est formée de manière à engrener les surfaces extérieures.
Gharib Mohamed
Gowling Lafleur Henderson Llp
LandOfFree
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