Metal deforming – By deflecting successively-presented portions of work during... – By use of deflector arranged to bend work transversely of...
Patent
1992-02-06
1993-08-24
Crane, Daniel C.
Metal deforming
By deflecting successively-presented portions of work during...
By use of deflector arranged to bend work transversely of...
72181, B21D 514
Patent
active
052378462
ABSTRACT:
Roll-formed parts having joggles or other non-linear bend lines are formed using a pair of forming mandrels having clamping surfaces with non-planar portions which are engaged on opposite sides of a sheet metal blank and passed between successive sets of forming rolls of a roll forming machine. As the mandrels and the blank enter a first roll forming pass, the mandrels and the blank are clamped together with sufficient pressure that the portions of the blank engaged by the mandrels are forced to conform to the shapes of the clamping surfaces. Parts of the blank are moved into engagement with other surfaces of at least one of the mandrels as the blank and the mandrels progress from pass to pass. Specially shaped rolls are provided to insure proper formation of the entire roll-formed part. The roll formed parts may be made from metal having a uniform thickness or different thicknesses.
REFERENCES:
patent: 489498 (1893-01-01), Pruden
patent: 2397608 (1942-02-01), Johnson
patent: 2497043 (1950-02-01), Gerts
patent: 2799317 (1957-07-01), Toulman, Jr.
patent: 3628361 (1971-12-01), De Rupa
patent: 3733868 (1973-05-01), Welty
patent: 3756057 (1973-09-01), Brooks, Jr. et al.
patent: 3903723 (1975-09-01), Colbath
patent: 4006617 (1977-02-01), Foster
patent: 4109499 (1978-08-01), Brooks et al.
patent: 4117702 (1978-10-01), Foster
patent: 4271777 (1981-06-01), Collins
patent: 4558577 (1985-12-01), Trishersky et al.
patent: 4770018 (1988-09-01), Bosl et al.
Article "Roll Forming Advances Suit Today's Structures" by Weimer, Iron Age, Magazine, Apr. 7, 1980, pp. 57 & 59; copyright Chilton Company 1980; also included is magazine cover and p. 8.
Crane Daniel C.
Dybvig Roger S.
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