06391251 is referenced by 270 patents and cites 2 patents.

A method and apparatus for embedding features and controlling material composition in a three-dimensional structure (

130

) is disclosed. The invention enables the control of material characteristics, within a structure (

130

) made from a plurality of materials, directly from computer renderings of solid models of the components. The method uses stereolithography and solid model computer file formats to control a multi-axis head (

480

) in a directed material deposition process (

123

). Material feedstock (

126, 127

) is deposited onto a pre-heated substrate (

19

). Depositions (

15

) in a layer-by-layer pattern, defined by solid models (

141, 146

), create a three-dimensional article having complex geometric details. Thermal management of finished solid articles (

250-302

), not available through conventional processing techniques, is enabled by embedded voids (

152

) and/or composite materials (

126, 127

), which include dissimilar metals (

210, 216

). Finished articles control pressure drop and produce uniform coolant flow and pressure characteristics. High-efficiency heat transfer is engineered within a solid structure by incorporating other solid materials with diverse indexes. Embedding multi-material structures (

132, 134

) within a normally solid component (

141

) produces articles with diverse mechanical properties. Laser and powder delivery systems (

420, 170

) are integrated in a multi-axis deposition head (

480

) having a focused particle beam (

502

) to reduce material waste.

Title
Forming structures from CAD solid models
Application Number
9/568207
Publication Number
6391251 (B1)
Application Date
May 9, 2000
Publication Date
May 21, 2002
Inventor
Mark E Smith
Tijeras
NM, US
Kevin J Dullea
Albuquerque
NM, US
James W Love
Los Lunas
NM, US
Pierrette H Gorman
Placitas
NM, US
James L Bullen
Edgewood
NM, US
David M Keicher
Albuquerque
NM, US
Agent
Thomas N Giaccherini
US
Assignee
Optomec Design Company
NM, US
IPC
B22F 7/02
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