Metal deforming – By pulling workpiece through closed periphery die – Utilizing plural metal-deforming tools
Patent
1990-04-09
1991-03-12
Crane, Daniel C.
Metal deforming
By pulling workpiece through closed periphery die
Utilizing plural metal-deforming tools
72287, 72420, B21C 122
Patent
active
049984292
ABSTRACT:
A tubular material drawing apparatus for manufacturing precision tubes comprises a plug set device, provided to a back bench, for holding a plug rod in a horizontal state, a travel base to be movable backward with respect to the back bench in a horizontal direction, a holding mechanism, provided to the travel base and capable of holding a rear end portion of a tube element, for holding the rear end portion of the tube element and moving the tube element in a horizontal direction to fit the tube element on the plug rod upon movement of the travel base, a clamp, movably provided to the travel base in a horizontal direction, holding the rear end portion of the tube element and then bringing the rear end portion to the holding mechanism, a carriage guide horizontally extending, a carriage which is guided by the carriage guide and is movable forward, die provided between the back bench and the carriage, and a chuck portion, provided to the carriage and capable of holding a front end portion of the tube element. The chuck portion, die, and holding mechanism are arranged to be coaxially positioned, for holding the front end portion of the tube element while the holding mechanism holds the front end portion of the tube element in which the plug rod is inserted, and while the carriage is moved forward, thereby allowing the die to draw the tube element.
REFERENCES:
patent: 1984756 (1934-12-01), Offutt
patent: 2264688 (1941-12-01), Wolf
patent: 2378729 (1945-06-01), Schmidt
patent: 2492876 (1949-12-01), McIlvried et al.
patent: 2536637 (1951-01-01), Garwig
patent: 2764279 (1956-09-01), Kerr
patent: 3172529 (1965-03-01), Brauer
patent: 3292407 (1966-12-01), Poncar
Iwata Masahiro
Kandachi Mitsuo
Kato Kazumi
Yamanoi Yukio
Crane Daniel C.
Furukawa Aluminum Co., Ltd.
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