Bending machine for sheet metal panels having a blank holder wit

Details Bending machine for sheet metal panels having a blank holder wit Bending machine for sheet metal panels having a blank holder wit

1988-06-01

1989-07-04

Crane, Daniel 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

048438626

ABSTRACT:
The bending machine has a blank holder with a support hinged on a fixed base. The blank holder is operated by a plurality of hydraulic cylinders which act from the bottom up, reacting on the fixed base. The machine has opposite blades operated by horizontal and vertical cylinders, whose ends are hinged on the fixed base. Said opposite blades are held by a common support through which pass the stems of said hydraulic cylinders operating the blank holder. Said hydraulic cylinders are also equipped with a stoppage system for stopping the blank holder in a position above a sheet metal panel placed over a fixed counterblade.

REFERENCES:
patent: 2283012 (1942-05-01), Nightingale
patent: 2343441 (1944-03-01), Babcock et al.
patent: 2494149 (1950-01-01), Webb
patent: 3946588 (1976-03-01), Mayston

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