Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1995-06-06
1997-07-22
Jones, David
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72700, 72709, 294211, B21D 2602
Patent
active
056494394
ABSTRACT:
A tool for sealing two ends of a tube of superplastic material in preparation for superplastically forming the tube against inside surfaces of a die by gas pressure inside of the tube. The tool has a longitudinal axis that is coincident with the longitudinal axis of the tube when the tool is positioned in the tube, and has two end caps with a cross-sectional shape similar to the cross-sectional shape of the tube ends on a plane perpendicular to the axis. A central connecting tube extends between and connects the two end caps. The end caps are made of a material having a coefficient of thermal expansion that is greater than the coefficient of thermal expansion of the tube, and expand, on heating, into intimate sealing contact with the inside surface of the tube ends. A gas connector in at least one of the end caps, located in the end cap radially outside the connection of the connecting tube to the end cap, connects a gas line from a gas management system for introducing forming gas under pressure into the tube, after the ends thereof are sealed by the end caps and the tube is heated to the thermoplastic forming temperature thereof, for inflating the tube against the inside surfaces of the die. The gas needs to fill and act only in the volume between the connecting tube and the tube instead of the entire volume of the tube, thereby saving forming gas.
REFERENCES:
patent: 2038304 (1936-04-01), Middler
patent: 2292462 (1942-08-01), Milford
patent: 2748463 (1956-06-01), Mueller
patent: 2861530 (1958-11-01), Mocha
patent: 3340101 (1967-09-01), Fields, Jr.
patent: 3896648 (1975-07-01), Schertenleib
patent: 3900939 (1975-08-01), Greacn
patent: 4392602 (1983-07-01), Darby
patent: 5022135 (1991-06-01), Miller et al.
patent: 5107693 (1992-04-01), Olszewski et al.
patent: 5214948 (1993-06-01), Sanders et al.
patent: 5233855 (1993-08-01), Maki et al.
Jones David
Neary J. Michael
Nelson Lawrence W.
The Boeing Co.
LandOfFree
Tool for sealing superplastic tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tool for sealing superplastic tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool for sealing superplastic tube will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1554040