Abstract: A lamination molding apparatus which can lower the oxygen concentration in a molding room in short time is provided. A lamination molding apparatus, including a molding room; a processing head; a driving device housing room housing a driving device moving the processing head; a partitioning section to partition the molding room from the driving device housing room; a discharging section to discharge gas in the molding room; and an inert gas supplying apparatus to supply the inert gas to both of the molding room and to the driving device housing room.

Abstract: A lamination molding apparatus is provided capable of preventing damage to a cutting device. Every time a sintered body including a sintered layer group consisting of a predetermined number of sintered layers is formed, gas is injected from a gas injector toward a vicinity of a side surface of the newly formed sintered body so as to blow off material powder, and then the side surface of the sintered body is shaved by a cutting tool of the cutting device, wherein the gas injector blows off the material powder by only intermittent injection which repeats short-time gas injection or by a combination of the intermittent injection and continuous injection which continuously injects the gas.

Abstract: An improved lamination molding apparatus which can remove the fume swiftly and efficiently away from the optical pathway of the laser beam, is provided.

Abstract: An improved lamination molding apparatus which can maintain the inert gas environment in the chamber as well as remove the fume swiftly and efficiently away from the optical pathway of the laser beam, is provided.

Abstract: A metal 3D printer includes: a housing (1) forming a molding chamber (1B); a recoater head (3) reciprocating in the direction of a horizontal U axis in the molding chamber to form a powder layer of a metal; a laser irradiation device (9) irradiating an irradiation region in the powder layer with a laser beam to form a sintered layer; and an inert gas supply device (4). The inert gas supply device includes: a first suction port (V1) disposed on one (14) of the side walls facing each other in the direction of the U axis, which is far away from the irradiation region; a first blowout port (F1) disposed on a side of the recoater head to face the first suction port; and a second blowout port (F2) disposed to face the first suction port across the irradiation region.

Abstract: A lamination molding apparatus which can improve the lamination molding accuracy, is provided. A lamination molding apparatus, including a chamber covering a desired molding region, the chamber being filled with an inert gas of a predetermined concentration; and a molding table provided in the molding region, the molding table being configured so as to be capable of being moved vertically by a driving mechanism; wherein the molding table is configured to be temperature-controllable; and a thermostatic section is provided in between the molding table and the driving mechanism or in the driving mechanism, temperature of the thermostatic section being maintained substantially constant, is provided.

Abstract: A lamination molding apparatus which can lower the oxygen concentration in a molding room in short time is provided. A lamination molding apparatus, including a molding room; a processing head; a driving device housing room housing a driving device moving the processing head; a partitioning section to partition the molding room from the driving device housing room; a discharging section to discharge gas in the molding room; and an inert gas supplying apparatus to supply the inert gas to both of the molding room and to the driving device housing room.

Abstract: A lamination molding apparatus which can remove the non-sintered material powder after completion of lamination molding easily and with less time after completion of laminating/molding, is provided. According to embodiments of the present invention, a lamination molding apparatus to conduct lamination molding using a material powder, including: a chamber filled with an inert gas having a predetermined concentration; a molding table provided in the chamber, the molding table being capable of moving vertically; a powder retaining wall surrounding the molding table so as to retain the material powder supplied on the molding table; and a powder discharging section provided on or below the powder retaining wall, the powder discharging section being capable of discharging the material powder, is provided.

Abstract: An improved lamination molding apparatus which can maintain the inert gas environment in the chamber as well as remove the fume swiftly and efficiently away from the optical pathway of the laser beam, is provided.

Abstract: An improved lamination molding apparatus which can remove the fume swiftly and efficiently away from the optical pathway of the laser beam, is provided.

Abstract: A spindle apparatus includes a rotatable first spindle (5, 32) to which a tool can be attached. The first spindle is supported in a base with high precision using an air hydrostatic bearing. The spindle apparatus further includes a second spindle (6, 33) capable of rotation about an axis substantially aligned with the axis of the first spindle, first connection means for electrically connecting a base side and the second spindle, and second connection means for electrically connecting the first spindle and the second spindle. Electrical connection between the base side and the first spindle is carried out via the first and second connection means. The first connection means is, for example, a brush (15, 36). The second connection means has a degree of mechanical freedom and is, for example, a flexible electrical wire (17, 39) or a helical spring (51).

Abstract: A spindle apparatus includes a rotatable first spindle (5, 32) to which a tool can be attached. The first spindle is supported in a base with high precision using an air hydrostatic bearing. The spindle apparatus further includes a second spindle (6, 33) capable of rotation about an axis substantially aligned with the axis of the first spindle, first connection means for electrically connecting a base side and the second spindle, and second connection means for electrically connecting the first spindle and the second spindle. Electrical connection between the base side and the first spindle is carried out via the first and second connection means. The first connection means is, for example, a brush (15, 36). The second connection means has a degree of mechanical freedom and is, for example, a flexible electrical wire (17, 39) or a helical spring (51).

Abstract: A linear motor armature (1) is constructed by connecting in series a front module (10), at least one intermediate module (20), and a back module (30). The front module includes a first fluid passage, one end of which can be connected to the outside of the armature and the other end of which is open to the back edge (11B) of the front module, and a fifth fluid passage, one end of which can be connected to the outside of the armature and the other end of which is open at the back edge of the front module. The at least one intermediate module includes a second fluid passage, one end of which is open at the front edge (21A) of the intermediate module and the other end of which is open at the back edge (21B) of the intermediate module, and a fourth fluid passage, one end of which is open at the front edge of the intermediate module and the other end of which is open at the back edge of the intermediate module.

Abstract: A linear motor armature (1) is constructed by connecting in series a front module (10), at least one intermediate module (20), and a back module (30). The front module includes a first fluid passage, one end of which can be connected to the outside of the armature and the other end of which is open to the back edge (11B) of the front module, and a fifth fluid passage, one end of which can be connected to the outside of the armature and the other end of which is open at the back edge of the front module. The at least one intermediate module includes a second fluid passage, one end of which is open at the front edge (21A) of the intermediate module and the other end of which is open at the back edge (21B) of the intermediate module, and a fourth fluid passage, one end of which is open at the front edge of the intermediate module and the other end of which is open at the back edge of the intermediate module.