Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1974-01-04
1976-05-04
Mehr, Milton S.
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72270, 72284, 226172, B21C 3300
Patent
active
RE0287954
ABSTRACT:
Four trains of gripping element quadrants are continuously propelled around four endless paths, meeting along one length of travel common to the four paths and cooperating along said common length of travel to form a continuously moving train of centrally apertured gripping elements moving toward an extrusion die adjacent the end of said common length of travel. Rod of indefinite length, coated with shear transmitting medium and extending into the central apertures of the gripping elements, is drawn along the common length of travel by means of shear forces generated in said coating by said gripping elements and transmitted to said rod as viscous drag force along the surface of the rod. Axial and normal stresses are built up in the rod to stress the rod far above its yield strength and increase its ductility, or capacity for deformation without fracture. In this state, the rod is moved through and deformed by the die. A pressure cylinder surrounds the gripping elements along the common length of travel and provides balanced increasing lateral support to the gripping elements as they move toward the die.
REFERENCES:
patent: 524509 (1894-08-01), Robertson
patent: 1321729 (1919-11-01), Friel
patent: 2569266 (1951-09-01), Thompson
patent: 2598190 (1952-05-01), Offutt
patent: 2602538 (1952-07-01), Bimba et al.
patent: 2642280 (1953-06-01), Fisk
patent: 3013451 (1961-12-01), Scribner
patent: 3417589 (1968-12-01), Bobrowsky
patent: 3618840 (1971-11-01), Courret
patent: 3765216 (1973-10-01), Green
Kelley D. P.
Mehr Milton S.
Rosen A. S.
Western Electric Company Inc.
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