Metal deforming – By application of fluent medium – or energy field
Patent
1986-02-18
1988-02-09
Spruill, Robert L.
Metal deforming
By application of fluent medium, or energy field
72 62, 72 58, 72478, 72465, 72370, 29421R, 413 73, 413 76, B21D 2818
Patent
active
047234300
ABSTRACT:
A system for forming a surface configuration, such as a neck and a flange, on a can body adjacent an open end thereof using a mandrel having an outer surface comprising generally cylindrical portions on each side of an annular recess which recess has a surface configuration corresponding to the neck and the flange to be formed. A resilient deformable object is located around the mandrel. A portion of a can body is placed between the mandrel and the resilient, deformable object which is then deformed so as to move a portion of the can body into conformation with the surface of the annular recess. At the same time, a force is applied to a portion of the portion of the can body being deformed to resist the movement thereof so that the portion of the can body in which the neck and flange is being formed is stretched and thinned as it is moved into conformation with the surface of the annular recess.
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Metal Box publication, printed in England 1/1982, "160 N".
Adolph Coors Company
Jones David B.
Spruill Robert L.
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