Method and apparatus for producing parts by layered subtractive

Details Method and apparatus for producing parts by layered subtractive Method and apparatus for producing parts by layered subtractive

1994-12-21

1997-01-07

Arbes, Carl J.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

29928, 29433, 264 451, 264255, 264522, B21B 142

Patent

active

055904548

ABSTRACT:
A method of forming a three-dimensional object (38) is provided using a combination of molding and machining. In its most basic form, the method of the present invention is achieved by depositing a first layer of mold material (40) onto a support surface (20), machining a first cavity (42) into the first layer of mold material, depositing a first layer of construction material (52) onto the first layer of mold material such that an overlapping portion (52a) of the first layer of construction material fills the first cavity to form a first three-dimensional section of the object and such that a superposing portion (52b) of the layer of construction material covers the first layer of mold material, and machining the superposing portion (52b) to form a second three-dimensional section of the object. A larger object may be produced by repeating such steps in like sequence to form additional three-dimensional sections. In the apparatus of the present invention, control of deposition of materials through dispensers (14, 16) and subsequent machining operations by sculpting means (12) is achieved automatically by a director (24) controlled by a computer system (30) comprised of a microprocessor (34) and a CAD/CAM system (36).

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