Apparatus for bending metal sheet

Details Apparatus for bending metal sheet Apparatus for bending metal sheet

1996-05-29

1998-04-28

Crane, David C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

72323, B21D 504

Patent

active

057431280

ABSTRACT:
An apparatus for bending metal sheet comprises a frame (1), a stationary lower beam (2) with a lower clamp (5) and a movable upper beam (3) with an upper clamp (6). The clamps each have a clamping face for clamping a metal sheet in a working position. The apparatus further comprises a lower bending beam (13) and/or an upper bending beam (14) for bending upwardly or downwardly, respectively, a clamped metal sheet. At both sides the bending beam(s) is/are supported in the frame rotatably around an axis and independent of the upper and/or lower beam. The body of the lower or upper bending beam (13, 14) in a working starting position extends substantially perpendicular to the clamping face and the lower and upper clamps (5, 6) determine in cross-section in the working position a V-shape, the apex of which is directed towards the axis (15, 16) of the bending beam being in the working position.

REFERENCES:
patent: 2312021 (1943-02-01), Bowman
patent: 2325736 (1943-08-01), Bowman
patent: 4510785 (1985-04-01), Triouleyre
patent: 5313814 (1994-05-01), Yamamoto

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