Method for locally deforming a round tube into a tube comprising planar surfaces and a forming punch for carrying out said method
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United States of America Patent
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-
Apr 30, 1985
Grant Date -
N/A
app pub date -
Sep 29, 1982
filing date -
Oct 9, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The forming punch (18) comprises two planar surfaces (20, 22) interconnected by an edge (23), two portions of a cylinder which passes through the edge (23) and a curved surface centered on this edge. This punch (18) is inserted in the tube to the point of the tube to be deformed and then the tube is compressed between a V-shaped groove (34) in a die (36) and a curved groove (40) in a compression member (38). The punch (18) is thereafter withdrawn from the tube by axially sliding the punch out of the latter.
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