Abstract: A method for producing a three-dimensional shaped product based on repetition of a step of molding of a powder layer 3 and sintering with a laser beam or an electron beam, wherein in a lattice region 1, a sintered layer 41 is molded by scanning the beam having a predetermined spot diameter several times in one side direction at a predetermined interval, after which a sintered layer 42 is again molded by the same scanning in the other side direction which crosses the one side direction, and in an outer frame region 2, a continuous sintered layer 43 is molded by scanning the beam having the predetermined spot diameter over the entire lattice region 1 that is surrounded by an inner line and an outer line, and is also achieved by a three-dimensional shaped product obtained by the method.

Abstract: A shaping method for a three-dimensional shaped product, including the following steps: 1. Setting a traveling distance of the squeegee to be a short distance that does not reach a chamber wall section, 2. Establishing location of wall layers connecting both ends at the chamber wall sections in a direction perpendicular to the traveling direction of the squeegee, within a traveling range based on the set traveling distance, or connecting to the ends on a powder feeder side at inner side of the chamber wall sections by a region to be sintered, from both sides of the region, 3. Forming powder layers by movement of the squeegee over the set traveling distance, 4. Forming sintered layers by irradiation with a beam on the formed powder layers, and forming wall layers by irradiation with a beam at the locations of the established wall layers, 5. Repeating steps 3 and 4.

Abstract: A three-dimensional shaping method including the steps, after a lamination step, in which steps of forming a powder layer, flattening with a squeegee and sintering are repeated, followed by cutting of the surface of the laminate, 1. setting the overall shape of an object to be shaped by a CAD/CAM system, and setting machining units that form the overall shape and cutting allowances on peripheral sides and upper sides of each of the machining units, 2. cutting of the peripheral sides and upper sides according to a prescribed order, after lamination with addition of a cutting allowance on the peripheral sides of each machining unit, and after carrying out lamination to the thickness of the cutting allowance on the upper side of the machining unit and the machining unit adjacent above the machining unit, and 3. continuing repetition of step 2, from the lowest to the topmost machining unit.

Abstract: A three-dimensional shaping apparatus includes a shaping table 31, a squeegee 32, a sintering device, a cutting device, transport pathways 4 through which metal powder and fumes that have been discharged to the outer side of a shaping tank 1 after cutting with the cutting device, and metal powder that has been discharged to the outer side of a chamber 2 surrounding the shaping tank 1 without forming part of the laminated layer, are transported to a sifter 5 located at the top of a powder tank 6, and supply devices for inert gas that does not react with the metal powder at an inlet 40 of each transport pathway 4, so as to suppress oxidation of metal powder in the transport pathway for collected metal powder and fumes, and also dust explosion due to sudden oxidation of the same.

Abstract: An apparatus for producing a three-dimensional shaped product in which a powder and a shaped article are loaded on a base plate, a frame body is installed upright on a table, a support projecting from the frame body and/or a restraining support provided at the top of the frame body are used to support the base plate, the base plate is supported by arranging the center of gravity of the base plate so as to be present, two or more recesses provided at the back of the base plate are fitted into two or more extension supports which cross each other and/or restraining supports, and projected parts provided on supports and/or wall parts of the frame body are contacted with horizontally surrounding parts of the base plate on both sides in the longitudinal direction of at least one recess among the recesses, thereby attaining the above object.

Abstract: An apparatus for producing a three-dimensional shaped product capable of decreasing thermal dissipation due to thermal conduction of a heating device or a cooling device loading a base plate, in which powder is sequentially sintered on a table and a base plate inside a shaping tank, wherein a space of vertical direction is formed on the table or the space is formed and a heat insulating material is filled into the thus formed region, a heating device or a cooling device which loads the base plate supporting the sintered layer is firmly fixed.

Abstract: A method for producing an artificial bone capable of accurate molding at a joined part with appropriate strength, in which electromagnetic waves or electron beams are irradiated to a layer of at least type of powder selected from metal biomaterials, ceramics for the artificial bone and plastic resins for the artificial bone based on image data corresponding to a shape of the artificial bone, thereby effecting sintering or melting, and the thus sintered layer or melted and solidified layer is laminated, such that a surface finish step is adopted that inner faces and/or outer faces of both ends and their vicinities configuring the joined part to a human bone part are polished by a rotating tool based on the image data and also irradiation of electromagnetic waves or electron beams at both ends and their vicinities constituting the joined part is set greater than that at other regions.