Curved SPF/DB sandwich fabrication

Details Curved SPF/DB sandwich fabrication Curved SPF/DB sandwich fabrication

1988-04-28

1989-05-30

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

291573D, 29445, 72 60, 72709, 228157, B23P 1700

Patent

active

048337684

ABSTRACT:
The process for forming a metallic sandwich structure having a curved surface, particularly a surface curving about more than one axis, such as a quadric surface partially by direct displacement and partially by a fluid interface. Additionally, means to restrain the work sheets being formed with respect to the shaping fixture which allow a portion of the work sheets to flow into the forming cavity before absolute restraint is applied and the restraining means function independently of the clamping force of the press.

REFERENCES:
patent: 2582358 (1952-01-01), Schoellerman
patent: 3024525 (1962-03-01), Wisberger
patent: 3077031 (1963-02-01), Fromson
patent: 3340101 (1967-09-01), Fields et al.
patent: 4217397 (1980-08-01), Hayase et al.
patent: 4304821 (1981-12-01), Hayase et al.
patent: 4549685 (1985-10-01), Paez

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