B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 28/28 (2006.01) B23P 11/00 (2006.01) B21D 26/02 (2006.01)
Patent
CA 2426501
In the present invention a tubular blank and an article such as a bushing (50) to be assembled are loaded into a die. The tube (40) is hydroformed using typical methods and, while the blank is still pressurized, a punch pierces a hole in the tube. The punch also has an article loaded onto it and, as the punch advances, the article is pushed into the tube through the pierced hole. The punch continues to advance such that it pierces a hole in the opposite side of the tube. The punch then retracts leaving the bushing in the tube. The article may alternately be inserted by means separate from the punch.
Selon l'invention, une ébauche tubulaire et un article (tel qu'une douille (50)) devant être assemblés sont chargés dans une matrice. Le tube (40) est hydroformé par des procédés classiques et, pendant que l'ébauche est encore sous pression, un perforateur perce un trou dans le tube. Un article est chargé dans le perforateur et, à mesure que ce dernier avance, l'article est poussé à l'intérieur du tube par le trou percé. Le perforateur continue d'avancer de façon à percer un trou dans le côté opposé du tube. Le perforateur se retire ensuite en laissant la douille dans le tube. L'article peut également être inséré par un moyen distinct du perforateur.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
F. & P. Mfg. Inc.
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