Apparatus and method for forming shaped parts

Details Apparatus and method for forming shaped parts Apparatus and method for forming shaped parts

B - Operations, Transporting

21

D

B21D 9/15 (2006.01) B21D 15/03 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2616550

An apparatus and method are provided for forming a shaped part from a tube (14) having an end and at least one bend, the shaped part having an enlarger portion between the bend and the end. The shaped part is formed by applying pressure fluid within the tube (14) while maintaining pressure on the end of the tube to cause expansion of the tube between the bend and the end. The shaped part is formed on a hydraulic press (10) having upper (18) and lower dies (16). The apparatus (10) includes at least one side assembly (22) pivotally mounted to the lower die (16) with a cylinder (28) for applying pressure to at least one end of the tube (14). The apparatus further includes seals (34) for sealing ends of the tube (14) and a fluid control device (36) for pressurizing the fluid within the tube.

La présente invention concerne un appareil et un procédé pour former une pièce de forme à partir d~un tube (14) comprenant une extrémité et au moins une courbure, la partie formée comprenant une partie agrandie entre la courbure et l~extrémité. La partie formée est constituée en appliquant un fluide sous pression dans le tube (14) tout en maintenant une pression sur l~extrémité du tube afin de provoquer l~expansion du tube entre la courbure et l~extrémité. La partie formée est façonnée sur une presse hydraulique (10) comprenant des matrices hautes (18) et basses (16). L~appareil (10) inclut au moins un assemblage latéral (22) fixé en rotation sur la matrice inférieure (16) avec un vérin (28) permettant d~appliquer la pression au moins à une extrémité du tube (14). L~appareil inclut également des joints (34) afin de rendre étanches les extrémités du tube (14) et un dispositif de commande du fluide (36) pour pressuriser le fluide dans le tube.

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