B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 26/02 (2011.01) B21D 41/02 (2006.01)
Patent
CA 2452020
A method for expanding tubular blanks (28) includes pre-expanding or initially expanding a section (34) of the tube by forcing a punch (32) into an open end (30) of the tube. The punching process may be repeated to achieve up to approximately 50% expansion from the original configuration of the blank (28). Then, the same pre-expanded section can be further expanded by hydroforming such that the blank (28) is filled with pressurized fluid to achieve further expansion of the initially expanded section (34) up to approximately 100% expansion from the original configuration of the blank (28). As a final step, the open end of the expanded tube may be cut to its ultimate shape.
L'invention concerne un procédé d'expansion d'ébauches tubulaires (28) consistant à pré-expanser ou expanser initialement une section (34) de tube par forçage d'un poinçon (32) dans une extrémité ouverte (30) dudit tube. Le procédé de poinçonnage peut se répéter jusqu'à obtenir environ 50 % d'expansion à partir de la configuration originale de l'ébauche (28). Puis, la même section pré-expansée peut ensuite être expansée par hydroformage de sorte que l'ébauche (28) est remplie d'un liquide sous pression permettant d'expanser la section (34) initialement expansée jusqu'à environ 100 % de la configuration originale de l'ébauche (28). Lors de la phase finale, l'extrémité ouverte du tube expansé peut être coupé afin d'obtenir sa forme finale.
Magna Structural Systems Inc.
Porat Alex
LandOfFree
Method for expanding a tubular blank does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for expanding a tubular blank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for expanding a tubular blank will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1672628