Abrégé

To provide, a three-dimensional molding method for molding of an object to be molded and a support structure that is to support the object from below, a construction such that the support structure is efficiently removed from the object to be molded and base plate after molding, and virtually no hindrance to movement of the squeegee is produced. [Solution Means] A three-dimensional molding method in which a step of sintering a powder layer with a laser light or an electron beam after a flat surface has been formed by sliding of a squeegee against the powder layer is repeated in a prescribed number of times, and then the periphery is cut, in order to mold both the object 1 to be molded and a support structure 2 that supports the lower side of the object 1 from below and is intended to be removed after molding, wherein in the support structure 2, the upper parts of the struts 20 connected to the object 1 to be molded employ truncated circular conic shapes or partial truncated circular conic shapes that are reduced in diameter toward the top.

Classes IPC  ?

• B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
• B29C 64/40 - Structures de support des objets en 3D pendant la fabrication, lesdites structures devant être sacrifiées après réalisation de la fabrication

Abrégé

A method is provided for three-dimensional molding of an object and removing a support structure from below the object after molding without hindering movement of a squeegee. A powder layer is sintered after a flat surface is formed by repeatedly sliding a squeegee against the powder layer, after which a periphery is cut for molding and removing the object. A lower side of the object is supported by a support structure. The support structure has upper struts with truncated circular conic shapes or partial truncated circular conic shapes, a middle partition plate that supports upper struts and lower supporting members supporting the middle partition plate.

Classes IPC  ?

• B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
• B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
• B22F 10/47 - Structures destinées à soutenir des pièces ou des articles pendant la fabrication et retirées par la suite caractérisées par des caractéristiques structurelles
• B22F 12/67 - Lames