Curling die tool

Details Curling die tool Curling die tool

2008-09-25

2009-11-03

Jones, David B (Department: 3725)

Metal deforming

By relatively movable offset tool-faces

Plural

C072S379200, C072S404000, C072S466900, C072S472000

Reexamination Certificate

active

07610789

ABSTRACT:
A curling die tool includes an upper die, a transmission, and a lower die. The upper die includes an upper-die body and a warping-bending pressure portion for a workpiece. The warping-bending pressure portion includes a punch member and is secured to the upper-die body. The transmission member includes a first supporting body corresponding to the punch member supporting the workpiece, along with a curling pressure portion. The transmission member defines a first supporting groove facing the upper die receiving the first supporting body, along with a curling-pressure-portion receiving groove opposite to the first supporting groove receiving the curling pressure portion. The lower die includes a second supporting body facing the curling pressure portion, supporting the workpiece, and defining a guiding groove and a second supporting groove receiving the second supporting body. The transmission member is movably connected to the lower die and slides along the guiding groove.

REFERENCES:
patent: 846139 (1907-03-01), Pruden
patent: 3301035 (1967-01-01), Gill
patent: 4852379 (1989-08-01), Levenberg
patent: 6269672 (2001-08-01), Schutz
Power Brakes Dies, Inc. “General Purpose and SPecial Press Brake Tooling”, 1974, Catalog 480, Curling Dies.
The Cincinnati Shaper Company, “Cincinnati Mechanical Press Brakes”, Dec. 1959, Catalog B-12, p. 37.

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