Flat metal stock bending die

Metal deforming – By relatively movable offset tool-faces – Embodying three or more coacting relatively movable tools

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Details

72389, 72396, 72413, 72473, B21D 501

Patent

active

050605011

ABSTRACT:
A die for use with a punch for bending flat metal stock and including a body defining a support surface adapted to support a piece of flat metal stock, a cavity disposed in a path of movement of the punch and intersecting and projecting below the support surface, and a stop surface forming a bottom wall of the cavity and having first and second surface portions; and a mounting retained by the body. A first elongated die bar is supported by the mouting for both translational and pivotal movement on a first axis in the cavity on one side of the path of movement; the first die bar defining upper and lower surfaces having a wedge shaped cross-section. A second elongated die bar also is supported by the mounting for both translational and pivotal movement on a second axis in the cavity on an opposite side of the path of movement; the second die bar defining upper and lower surfaces having a wedge shaped cross-section. This combination eliminates scoring during the bending of flat metal stock.

REFERENCES:
patent: 2882952 (1959-04-01), Johnson
patent: 2916073 (1959-12-01), Johnson

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