发明名称 |
Method and apparatus for producing parts by selective sintering |
摘要 |
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. Preferably, the powder dispensing mechanism includes a drum which is moved horizontally across the target area and counter-rotated to smooth and distribute the powder in an even layer across the target area. A downdraft system provides controlled temperature air flow through the target area to moderate powder temperature during sintering.
|
申请公布号 |
US5017753(A) |
申请公布日期 |
1991.05.21 |
申请号 |
US19900545142 |
申请日期 |
1990.06.22 |
申请人 |
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM |
发明人 |
DECKARD, CARL R. |
分类号 |
B05C19/00;B22F3/00;B22F3/105;B22F7/02;B23K26/08;B23K26/34;B29C35/04;B29C41/12;B29C41/46;B29C67/00;C23C24/08;C23C24/10;C23C26/02;G05B19/41 |
主分类号 |
B05C19/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|