THREE-DIMENSIONAL SHAPING METHOD

• Main Authors: USAMI HIROICHI, YOSHIDA TAKASHI, NAKAI SOMA
• Format: Patent
• Language: English; Japanese
• Published: 17.12.2020
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a technique for effectively preventing outflow of a shaping material, from between a shaping container and a shaping stage.SOLUTION: This invention relates to a three-dimensional shaping method for forming a powder layer made up of first particles, on a vertically movable shaping stage within a shaping container, and thereby forming a shaped object within the powder layer, the method including a step of forming the powder layer made up of the first particles, on the shaping stage on which second particles that have a larger particle size than that of the first particles are disposed along a gap between the shaping container and the shaping stage, wherein when R1 is an average particle size of the first particles, R2 is an average particle size of the second particles and d is a distance of the gap between the shaping container and the shaping stage, R1≤d<R2 is satisfied.SELECTED DRAWING: Figure 1 【課題】造形容器と造形ステージとの間から造形材料が流出することを効果的に防ぐことが可能な技術を提供する。【解決手段】造形容器内で昇降可能な造形ステージ上に第１の粒子からなる粉末層を形成し、前記粉末層内に造形物を形成する３次元造形方法において、前記造形容器と前記造形ステージとの隙間に沿って前記第１の粒子の粒径よりも大きな粒径を有する第２の粒子が配置された前記造形ステージ上に、前記第１の粒子からなる粉末層を形成する工程を含み、前記第１の粒子の平均粒径をＲ１、前記第２の粒子の平均粒径をＲ２、前記造形容器と前記造形ステージとの間の隙間の距離をｄとすると、Ｒ１≦ｄ＜Ｒ２を満たす。【選択図】図１