公开(公告)号：US10566171B2

公开(公告)日：2020-02-18

申请号：US15123350

申请日：2016-03-25

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Zhixiong Yuan ,  Kazuya Goto ,  Toshiyuki Morimura ,  Takahiro Shimbo

IPC: H01J37/147 ,  B23K15/00 ,  H01J37/302 ,  B33Y30/00 ,  B22F3/105 ,  H01J37/21 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/393 ,  B29C64/268 ,  B29C64/205 ,  B23K15/02 ,  H01J37/10 ,  H01J37/305 ,  G21K1/08 ,  B29C64/10 ,  B29C64/20

Abstract: This invention can maintain the temperature of the shaping plane in a three-dimensional layer-by-layer shaping apparatus. A three-dimensional layer-by-layer shaping apparatus includes a material spreader that spreads the material or materials of a three-dimensional layer-by-layer shaped object onto the shaping plane on which the three-dimensional layer-by-layer shaped object is to be shaped; an electron gun that generates an electron beam; at least one deflector that deflects the electron beam so that it scans the shaping plane one- or two-dimensionally; at least one lens that is positioned between the electron gun and the deflector, and focuses the electron beam; a focus controller that controls the focus of the electron beam based on which region is to be scanned by the electron beam; and a controller that controls the deflecting direction of the deflector and the scanning rate.