Method of forming spherical shells

Details Method of forming spherical shells Method of forming spherical shells

1986-12-10

1988-06-07

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72 57, 29421R, 425389, 425DIG19, B21D 2210

Patent

active

047488379

ABSTRACT:
A process for manufacturing a spherical shell from a blank utilizing dies, comprising the steps of forming and clamping a flange portion of the blank by pressing with the dies and applying fluid pressure to an elastic diaphragm or flat metal sheet to cause the diaphragm or sheet to bulge the blank so as to form a curved shell surface.

REFERENCES:
patent: 1329969 (1920-02-01), Harrison
patent: 2344743 (1944-03-01), Smith, Jr.
patent: 3208104 (1965-09-01), Hessel
patent: 3463035 (1969-08-01), Bright
patent: 3546740 (1970-12-01), Johnson
patent: 3646653 (1972-03-01), Richard
patent: 3670546 (1972-06-01), De La Sierra

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