Matsuura Machinery Corporation

The University of Tokyo

Technology Research Association for Future Additive Manufacturing

Hideto Matsubara

Koichi Amaya

Mitsuyoshi Yoshida

Yukinori Urushizaki

Toshihiko Kato

Nobuo Sasaki

Kouichi Amaya

Yuichi Tei

Tetsushi Midorikawa

Toshihiko Katoh

Nobuo Saski

The stop time of a whole apparatus caused by planning of shaping, maintenance, replacement of a material, or the like is shortened. A three-dimensional laminating and shaping apparatus includes a plurality of shaping chambers, at least one material supplier that supplies a material of a three-dimensional laminated and shaped object onto a shaping table in each of the shaping chambers, at least one light beam irradiator that irradiates the material with a light beam, and a controller that controls the material supplier and the light beam irradiator. If the material supplier supplies the material onto one of the shaping tables, the controller controls the light beam irradiator to perform irradiation of the light beam onto the other one of the shaping tables.

Three-dimensional laminating and shaping apparatus, control method of three-dimensional laminating and shaping apparatus, and control program of three-dimensional laminating and shaping apparatus

In metal powder processing equipment where metal powder is sequentially laminated on a table inside a chamber and laser beam melting or electron beam melting, and shaping by a cutting tool subsequent to the melting are performed, unmolded powder remaining at the time of the melting and cut powder generated by the cutting can be scattered by generating air flow with respect to the cutting tool from either side of a main shaft or a tool holder. As a result, life of the cutting tool is prolonged and quality of a cut surface can be improved.

Metal powder processing equipment

In a three-dimensional shaping device, a region of an elevatable/lowerable tablefor forming a powder layer and a region of a powder supply device are divided by a shield plate, an inert gas injection port is provided in the former region, the shield plate can be freely opened or closed so that a powder spraying squeegee traveling on the table is passed through, or a pipe which supplies powder from the powder supply device to the powder spraying squeegee which has traveled to the side of the shield plate penetrates through the shield plate, or a part of the shield plate is the powder supply port for the powder spraying squeegee which has traveled to the side of the shield plate and the pipe protrudes at a lower part and a sintering device applies a laser beam via a transparent region in a ceiling of a chamber.

Three-dimensional shaping device

In metal powder processing equipment where metal powder is sequentially laminated on a table of a chamber and laser beam melting or electron beam melting is performed or cutting and shaping are performed by a rotating tool subsequent to melting, a first temperature adjusting unit is placed at a lower bottom portion of the table and a second temperature adjusting unit is disposed in contact with and around the outer wall of the chamber and both units are simultaneously heated or cooled; a room partially enclosing a metal powder reserve tank and a metal powder supply pipe is provided with a third temperature adjusting unit, the temperature of which is set to average temperature of the second temperature adjusting unit before the second one actuates, so that deterioration of dimensional precision in processing and deterioration of metal powder quality can be prevented by keeping heating temperature constant.

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.

Apparatus for producing three-dimensional shaped product

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.

An apparatus for producing a three-dimensional shaped product installs on a surface of a table a base plate which loads powder and a shaped article, with a vertical space being formed. A frame body is installed upright on the table. The base plate is placed on a support horizontally projecting from the frame body and/or a step portion which provides an inner direction part of the table of the frame body. The base plate is supported so the center of gravity of the base plate is inside a triangle formed by three locations or a quadruple formed by four locations inside a region of the support or the step portion on which the base plate is placed, and the part projecting above the support and/or an inner wall of the frame body are contacted with a horizontally surrounding part of the base plate at three or more locations.

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.

Growing community of inventors

Fukui, Japan

Hideto Matsubara