公开(公告)号：EP3294531A1

公开(公告)日：2018-03-21

申请号：EP16793191

申请日：2016-05-03

申请人： WISCONSIN ALUMNI RES FOUNDATION

发明人： MACKIE THOMAS ROCKWELL ,  WALKER BRANDON JOSEPH

IPC分类号： B29C67/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

CPC分类号： B22F3/1055 ,  B22F2003/1057 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295

摘要： A 3-D printer scalable to large sizes employs a combination of mechanical and electrical scanning of a linear array of electron beams that operate to melt material of a powder bed. A housing holding the electron beam sources may be maintained at a high vacuum and positioned close to a print surface to minimize electron travel in a softer vacuum surrounding a print bed.