B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1103, 18/1171
B29C 35/00 (2006.01) B22F 3/00 (2006.01) B22F 3/105 (2006.01) B22F 7/02 (2006.01) B23K 26/08 (2006.01) B23K 26/34 (2006.01) B27N 3/00 (2006.01) B29C 41/12 (2006.01) B29C 41/46 (2006.01) B29C 67/00 (2006.01) C23C 24/08 (2006.01) C23C 24/10 (2006.01) C23C 26/02 (2006.01) G05B 19/41 (2006.01) B05C 19/00 (2006.01) B29C 35/04 (2006.01)
Patent
CA 1284868
ABSTRACT A method and apparatus for selectively sintering a layer of powder to produce a part comprising a plurality of sintered layers. The apparatus includes a computer controlling a laser to direct the laser energy onto the powder to produce a sintered mass. The computer either determines or is programmed with the boundaries of the desired cross-sectional regions of the part. For each cross-section, the aim of the laser beam is scanned over a layer of powder and the beam is switched on to sinter only the powder within the boundaries of the cross-section. Powder is applied and successive layers sintered until a completed part is formed. The powder can comprise either plastic, metal, ceramic, or polymer substance. In the preferred embodiment, the aim of the laser is directed in a continuous raster scan and the laser turned on when the beam is aimed within the boundaries of the particular cross-section being formed.
549388
Board Of Regents The University Of Texas System
Cassan Maclean
LandOfFree
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