LAMINATION MOLDING DEVICE AND LAMINATION MOLDING METHOD

To obtain a lamination molding device capable of suppressing the increase of production cost.SOLUTION: A lamination molding device 100 comprises: a vacuum chamber 1; a work bed 4 having a work table 41 provided at the inside of the vacuum chamber 1 and capable of adjusting a height in a vertical direction of forming the bottom face of a molding region R for molding a lamination molding M; a powder feed part 6 storing powder material 5 to be the raw material of the lamination molding M and feeding the raw material 5 to the molding region R; an electron gun 2 applying an electron beam EB for solidifying the powder material 5 to the molding region R; a shield member 7 provided at the inside of the vacuum chamber 1 and covering at least a part of the side face of a passage region S1 as a region through which the electron beam EB passes; and a gas feed part 8 feeding a gas cationized by the application of the electron beam EB into a gas feed space G as the space in which the side face of the passage region S1 is covered with the shield member 7.SELECTED DRAWING: Figure 1 【課題】生産コストの増加を抑制できる積層造形装置を得る。【解決手段】積層造形装置１００は、真空チャンバ１と、真空チャンバ１内に設けられ、積層造形物Ｍを造形するための造形領域Ｒの底面を形成する垂直方向に高さを調節可能な作業テーブル４１を有する作業土台４と、積層造形物Ｍの原料となる粉末材料５を貯留し、造形領域Ｒに粉末材料５を供給する粉末供給部６と、造形領域Ｒに、粉末材料５を固化させる電子ビームＥＢを照射する電子銃２と、真空チャンバ１内に設けられ、電子ビームＥＢが通過する領域である通過領域Ｓ１の側面の少なくとも一部を覆うシールド部材７と、通過領域Ｓ１の側面がシールド部材７によって覆われた空間であるガス供給空間Ｇ内に、電子ビームＥＢの照射によって陽イオン化するガスを供給するガス供給部８と、を備える。【選択図】図１