Method and apparatus for forming material by forcing through a d

Details Method and apparatus for forming material by forcing through a d Method and apparatus for forming material by forcing through a d

1975-07-24

1978-02-07

Lanham, C. W.

Metal deforming

By application of fluent medium, or energy field

By kinetic energy of fluid or field

72285, 72467, B21C 300

Patent

active

040720349

ABSTRACT:
Method and apparatus for deforming the section of material by forcing it, e.g. punching or drawing it, through a die. The die, die holder and workpiece are vibrated in tune, e.g. acoustically, so that points on the walls of the die orifice oscillate in a direction lying generally radial to the die axis. This causes the die to exert a swaging action upon the material and contribute to the deformation thus reducing the power needs for forcing the workpiece through the die and increasing the maximum deformation obtainable.

REFERENCES:
patent: 3274812 (1966-09-01), Evans
patent: 3434329 (1969-03-01), Goble
patent: 3495427 (1970-02-01), Balanuth
patent: 3570297 (1971-03-01), Matthews
patent: 3657910 (1972-04-01), Isobe
patent: 3774429 (1973-11-01), Holzer
"Flow Characteristics Through Conical Conveging Dies" by Avitzur; pp. 410-420; J. Eng. for Industry, vol. 88, Series B, No. 4, Nov. 1966.
"Analysis of Central Bursting Defects in Extrusion and Wire Drawing;" by Avitzur; pp. 79-91, J. Engr. Ind, vol. 90, Series B, No. 1, Feb. 1968.

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