Metal deforming – By deflecting successively-presented portions of work during... – By use of work-contacting wiper and moving – work-holding form
Patent
1993-05-24
1994-08-23
Jones, David
Metal deforming
By deflecting successively-presented portions of work during...
By use of work-contacting wiper and moving, work-holding form
72154, 72369, B21D 704
Patent
active
053396707
ABSTRACT:
Forming dies adaptable to conventional tube bending machinery, the forming dies including aligned forming rollers engaging the tubing to be bent, said forming rollers containing grooves having curvilinear surfaces said forming rollers initially deforming the said tubing into a first curvilinear shape upon the drawing or pushing of the tubing between the forming rollers. A bend die is aligned with a pressure die roller, the pressure die roller and bend die each containing grooves having curvilinear surfaces defining a second curvilinear shape. Upon drawing or pushing the tubing through the pressure die roller and bend die, a second curvilinear shape is imparted to the tube. The tubing may thus be provided with an enhanced curvilinear shape prior to bending.
REFERENCES:
patent: 2882953 (1959-04-01), Huet
patent: 2996100 (1961-08-01), Newhall et al.
patent: 3155139 (1964-11-01), Hautau
patent: 3242710 (1966-03-01), Hamlin
patent: 3261193 (1966-07-01), Van Harten
patent: 3303683 (1967-02-01), Schmidt
patent: 4765168 (1988-08-01), Stange et al.
Jones David
Keeling Kenneth A.
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