Chemistry: electrical and wave energy – Processes and products
Patent
1983-09-23
1985-08-13
Tufariello, Thomas
Chemistry: electrical and wave energy
Processes and products
204216, 204217, C25D 110, C25D 120, C25D 1700
Patent
active
045348316
ABSTRACT:
A method of and apparatus for forming a 3D-shaped article, such as a die or mold, utilizing an electroforming process in which a metal layer is electroformed on an electroforming mold and removed therefrom to form the desired article. The removal is facilitated by mirror-finishing anodizing the shaped electroforming mold and thereafter anodizing to form an oxide film thereon. The electroforming apparatus utilizes a worktank having a first and a second region separated by a partition. The partition has a plurality of apertures which provide communication between the first region with the second region, the latter having an anodic electrode and a source of the electroforming metal. The electroforming mold supported by a shank is introduced into the first region and reciprocated longitudinally of the axis of the shank with a stroke not less than the dimension of the electroforming surface of the mold in the direction of that axis. Alternatively or in addition, oscillations may be imparted to the electroforming mold and/or the mold may be rotated. An NC-controlled integral system for producing a desired 3D-article consistently from an electroforming blank material incorporates a tool storage station, an automatic tool changer and an NC unit for rough-machining the electroforming mold in the blank and finish-machining the rough-shaped blank to yield the electroforming mold which is then transferred automatically under NC commands sequentially to the mirror-finishing, anodizing and electroforming stations sequentially.
REFERENCES:
patent: 3512252 (1970-05-01), Sargent
patent: 3699014 (1972-10-01), Eisner
patent: 3753889 (1973-08-01), Eisner
patent: 3799859 (1974-03-01), Wallin
patent: 3939046 (1976-02-01), Conn
patent: 4067782 (1978-01-01), Bailey
patent: 4290856 (1981-09-01), Inoue
Dubno Herbert
Inoue-Japax Research Incorporated
Ross Karl F.
Tufariello Thomas
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