Process and device for bending elongated articles

Details Process and device for bending elongated articles Process and device for bending elongated articles

1977-08-31

1979-05-01

Combs, E. M.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 16, 72128, 72369, B21D 716

Patent

active

041517326

ABSTRACT:
A process and a machine for bending elongated articles wherein the article is led progressively past a heating device heating a small band of the article, the bending taking place in said band, wherein for controlling the thickness of a wall portion lying in the bend one measures the longitudinal speed of said still unbent wall portion before this reaches the heating device and likewise the speed after this wall portion has passed the heating device, and adjusts the distribution of the temperature in the heating zone of the band by changing the heating pattern in dependence on the relation between said two speeds.

REFERENCES:
patent: 2461323 (1949-02-01), Hille
patent: 2812004 (1957-11-01), Huet
patent: 3229489 (1966-01-01), Huet
patent: 3328988 (1967-07-01), Schmidt
patent: 3368377 (1968-02-01), Hirayama et al.
patent: 3896649 (1975-07-01), Stuart
patent: 3902344 (1975-09-01), Stuart
patent: 4056960 (1977-11-01), Kawanami
patent: 4061005 (1977-12-01), Kawanami et al.
patent: 4062216 (1977-12-01), Hanamoto et al.

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