公开(公告)号：US11007713B2

公开(公告)日：2021-05-18

申请号：US15497832

申请日：2017-04-26

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： John P Spicer ,  Jason J Nolte ,  Thomas A. Perry ,  Blair E Carlson ,  Anil K Sachdev ,  Hyungmin Chae ,  Mark A Smith

IPC分类号： B29C64/20 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/153 ,  B22F12/00 ,  B29C64/241 ,  B29C64/171 ,  B29K105/00

摘要： An additive manufacturing system includes a powder delivery system, an area scanning laser, a build chamber, and a controller. The powder delivery system provides a predetermined amount of powder material to the build chamber, and includes a material dispenser, a dispensing head, and a scraper. The scanning laser selectively sinters the powder material, and includes a mirror galvanometer for raster scanning. The build chamber has an annular configuration, and includes an inner annular wall that defines a central portion disposed inward of the build chamber. A portion of the delivery system and the laser are located in the central portion. The chamber continuously rotates under the head and under a sintering zone generated by the laser as the delivery system continuously dispenses the material. The laser continuously raster scans the material at the sintering zone in a raster pattern to sinter a layer of material directly to a preceding layer.