Metal deforming – By extruding through orifice – Non-axial movement of die – ram – mandrel or container
Patent
1976-03-05
1979-02-06
Lanham, C. W.
Metal deforming
By extruding through orifice
Non-axial movement of die, ram, mandrel or container
72264, 72467, 72481, 425466, B21C 2304, B21C 2502, B21D 3704
Patent
active
041377451
ABSTRACT:
In a device for extruding hollow articles, e.g. tubes, the die is rotatably mounted in the die holder. The die has a hole for shaping the external surface of the tube. The axis of said hole is eccentric relative to the axis of the external surface of the die holder. The device comprises a needle for shaping the internal surface of the tube, the needle entering the die hole during the process of extrusion. The needle axis coincides with the extrusion axis. The die holder is made of at least two bushings, installed one inside the other. The axes of the internal surfaces of the bushings are offset relative to the axes of their external surfaces. The bushings are capable of turning for adjusting the position of the die hole axis relative to the needle. This design of the die holder makes it possible to minimize the eccentricity of the axes of the internal and external surfaces of the tubes extruded in the device realized according to the present invention and installed in a conventional press.
REFERENCES:
patent: 558257 (1896-04-01), Cobb
patent: 1100002 (1914-06-01), Van Ness
patent: 1185302 (1916-05-01), Garretson
patent: 1984775 (1934-12-01), Swartz
patent: 2805446 (1957-09-01), Bartoo
Belov Mikhail F.
Erlikh Mikhail I.
Gildengorn Melis S.
Konkov Vyacheslav S.
Kot Jury D.
Gurley D. M.
Lanham C. W.
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