Method and apparatus for bending metal beams

Details Method and apparatus for bending metal beams Method and apparatus for bending metal beams

1980-12-03

1983-07-05

Combs, Ervin M.

Metal deforming

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

With cutting of work or product

72152, 72294, 72305, B21D 704, B21D 4328

Patent

active

043911153

ABSTRACT:
The invention relates to arches for use in tunnels such as underground mine tunnels. These arches are composed of a bent metal beam often of "H" or "T"-section. Problems have previously arisen in accurately bending the beams to the required shape. The apparatus of the invention includes a D-shaped former which is rotatable relative to a roller. The beam is clamped to one end of the former and on rotation of the former relative to the roller, the beam is bent around the former so that it assumes the required shape, the ends of the beam being clamped to the former. A cutting device may be employed to cut the beam, while bent around the former, into three or more sections.

REFERENCES:
patent: 1997098 (1935-04-01), Beegle
patent: 2411801 (1946-11-01), Nielsen et al.
patent: 3178922 (1965-04-01), Tabor
patent: 3339391 (1967-09-01), Kowalski

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