Apparatus and method for forming a tube having an article...

Details Apparatus and method for forming a tube having an article... Apparatus and method for forming a tube having an article...

B - Operations, Transporting

21

D

B21D 39/00 (2006.01) B21D 39/03 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2427455

In the present invention, at least one tubular blank (A) and at least one article such as a metal stamping (T), to be attached to a hydroformed part, are loaded into a die. The tube is hydroformed using typical methods. The article is positioned in the die such that, when the tube is hydroformed, the final hydroformed tube contacts the article at least at a point. Attachment means, such as a laser welder, are provided with access to the contact point between the article and the hydroformed tube so that a tack weld or other attachment can be made between the article and the hydroformed tube while still in the closed die. The hydroformed tube and attached article are then removed as a joint assembly from the die.

Dans la présente invention, au moins une ébauche tubulaire et au moins un article tel qu'une pièce de métal fabriquée à la presse destinée à être fixée à une partie hydroformée sont chargés dans un moule métallique. Ce tube est hydroformé par des procédés habituels. L'article est positionné dans le moule de sorte que, lorsque le tube est hydroformé, ce tube hydroformé final entre en contact avec cet article au moins au niveau d'un point. Un moyen d'attache, tel qu'une soudeuse laser accède à ce point de contact entre l'article et le tube hydroformé de façon à former une soudure par point ou un autre type d'attache entre cet article et ce tube hydroformé alors que ces derniers sont toujours confinés dans le moule fermé. Ce tube hydroformé et cet article fixé sont alors retirés du moule sous une forme assemblée.

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