Method for forming a precision surface of large area

Details Method for forming a precision surface of large area Method for forming a precision surface of large area

1984-07-25

1986-03-11

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29559, 156285, 156305, 156382, 269 21, 343761, 350320, B21D 3500

Patent

active

045744572

ABSTRACT:
A thin sheet is formed into a surface having compound curvature by vacuum forming the sheet against an array of support posts which have been adjusted to define the locus of the desired surface. A rigid frame is placed on the exposed back surface of the sheet and bonded thereto while the vacuum formed shape is maintained. Alternatively, a frame of beam members kerfed to make them compliant is placed on the back surface and bonded to the sheet which restores the structural integrity of the beams by briding the kerfs.

REFERENCES:
patent: 3293739 (1966-12-01), Hoglund et al.
patent: 3322190 (1967-05-01), Johnson, Jr.
patent: 3434181 (1969-03-01), Benzies
patent: 3490405 (1970-01-01), Reader et al.
patent: 3550142 (1970-12-01), Dawson
patent: 3655472 (1972-04-01), Chandler
patent: 4115177 (1978-09-01), Nelson
patent: 4213698 (1980-07-01), Firtion
patent: 4268332 (1981-05-01), Winders
patent: 4372027 (1983-02-01), Hutchison
patent: 4468848 (1984-09-01), Anderson et al.

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