Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1993-03-23
1994-03-22
Jones, David
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
72382, 72482, B21D 502
Patent
active
052953858
ABSTRACT:
A bending apparatus can preclude the generation of an undesired flaw in a workpiece during the bending of the workpiece and can readily cope with workpieces of various thicknesses. The apparatus has a die having a top groove of a W-shaped sectional profile, and a pair of blades disposed on top of the groove. The blades are supported for rotation and movement by mounting plates, and a spring biases the blades to horizontal positions atop the groove. The blades can be rotated and moved by a punch until the blades become seated in the groove. Spacers that constitute extensions of side wall surfaces of the die defining opposite sides of the groove are removable from the die and replaceable to vary the distance by which the side wall surfaces are extended in correspondence with the thickness of the workpiece to be bent.
REFERENCES:
patent: 5060501 (1991-10-01), Heath
"One di-acro rol-form die", O'Neil-Irwin Mfg. Co., 4 pages, 1958.
Jones David
Murai Industrial Co., Ltd.
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