Metal deforming – With cutting – By shearing tool-couple
Patent
1990-01-12
1991-10-08
Crane, Daniel C.
Metal deforming
With cutting
By shearing tool-couple
72407, 7245301, 83615, 836391, B21D 2824
Patent
active
050543059
ABSTRACT:
An apparatus for performing mechanical operations such as piercing, punching and forming on a workpiece wherein the apparatus includes a carrier, a ram mounted for reciprocal movement on the carrier, a first fabricating tool mounted on the ram, a piston assembly mounted on the ram for reciprocal movement on the ram, a second fabricating tool mounted on the piston assembly, and a third fabricating tool mounted on the carrier. The first and third fabricating tools coact to perform a first work operation on a workpiece in response to relative movement between the ram and the carrier whereafter the second fabricating tool mounted on the piston assembly is utilized to perform a second work operation on the workpiece in response to relative movement between the piston assembly and the ram. The various movements between the ram, carrier, and piston assembly are accomplished by selective introduction of pressurized hydraulic fluid into various pressure chambers respectively defined by the ram, carrier, and piston assembly.
REFERENCES:
patent: 300174 (1884-06-01), Webster
patent: 1875448 (1932-09-01), Hanna
patent: 3008032 (1961-11-01), Wolfbauer
patent: 3270604 (1966-09-01), Waltonen
patent: 3396260 (1968-08-01), Waltonen
patent: 4073176 (1978-02-01), Paul
patent: 4098161 (1978-07-01), Bloch
patent: 4716803 (1988-01-01), Waltonen
patent: 4760633 (1988-08-01), Dacey, Jr.
patent: 4763550 (1988-08-01), Waltonen
Obrecht Robert E.
Waltonen Edward J.
Crane Daniel C.
REO Hydraulic Pierce & Form Inc.
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