Roll forming system for forming flanges in strip material

Details Roll forming system for forming flanges in strip material Roll forming system for forming flanges in strip material

2005-08-16

2005-08-16

Crane, Daniel C. (Department: 3725)

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflector arranged to bend work transversely of...

C072S182000

Reexamination Certificate

active

06928847

ABSTRACT:
A V-shaped metal strip has a U-shaped bottom having U-shaped inside and outside surfaces. Only the U-shaped inside surface is formed with a plurality of fold lines extending in a longitudinal direction of the strip and reducing the influence of springback. The fold lines may be arranged in a manner of bilateral symmetry with respect to an imaginary median plane bisecting the V-shaped cross section of the metal strip.

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