A plasticization device includes: a rotor rotated by a drive motor and having a groove forming surface in which a first groove portion is formed along a rotation direction; a rotor case configured to accommodate the rotor; a barrel facing the groove forming surface and having a through hole; a first heating unit configured to heat the rotor or the barrel; and a cooling mechanism configured to cool a side surface of the rotor. In the plasticization device, a material supplied between the first groove portion and the barrel is plasticized by rotation of the rotor and heating by the first heating unit to flow out from the through hole, and the side surface of the rotor has a material guiding port configured to guide the material to the first groove portion, and a second groove portion configured to feed the material supplied between the rotor and the rotor case to the material guiding port.

A three-dimensional modeling device includes a modeling unit having a nozzle configured to eject a modeling material, a stage, a movement mechanism unit for changing a relative position between the nozzle and the stage, a measuring unit, a reference unit having a reference surface arranged at a position that corresponds to a deposition surface of the stage in an intersecting direction and where the reference surface can face the measuring unit, the reference unit being separate from the nozzle, and a control unit controlling the modeling unit and the movement mechanism unit. The control unit controls the measuring unit to measure a first distance between the measuring unit and the reference surface and a second distance between the measuring unit and the distal end surface, and decides a distance between a distal end surface of the nozzle and the deposition surface, based on the first and second distances.

A 3D printing system uses heat sources, such as lasers, for manufacturing parts in metal additive manufacturing, such as powder-bed fusion, on one or more movable build modules. The build modules may be moved (e.g., by a conveyor system) into and out of a lasing module. Parts may be manufactured on multiple build modules simultaneously and/or sequentially, in some cases while the build module(s) are moving relative to the heat sources. Sensor(s) are arranged to determine a position, orientation, and/or movement of the build modules and feedback from the sensor(s) may be used to control the heat sources to compensate for motion of the build modules.

An apparatus for additive manufacturing of a three-dimensional object by successive layer-by-layer selective illumination and thus selective solidification of construction material layers formed in a construction plane, consisting of a solidifiable construction material by at least one energy beam, comprising a housing structure, and a combined coating and illumination assembly firmly arranged or formed on the housing structure of the apparatus, comprising a coating device provided for applying the construction material into the construction plane and for forming construction material layers to be solidified in the construction plane, and an illumination device provided for the selective illumination of respective construction material layers formed in the construction plane by the coating device, and a carrying device.

A three-dimensional shaping apparatus includes a plasticizing portion plasticizing a material to generate a shaping material, a nozzle having a discharge port discharging the shaping material toward a table, a movement mechanism changing a relative position between the nozzle and the table, a discharge control mechanism provided in a flow path which connects the plasticizing portion to the nozzle and controlling a discharge amount of the shaping material from the nozzle, and a control portion controlling the plasticizing portion, the movement mechanism, and the discharge control mechanism to shape the three-dimensional shaping object. The control portion controls the discharge control mechanism so that when a relative movement speed between the nozzle and the table is a first speed, the discharge amount of the shaping material is set to a first discharge amount, and when the relative movement speed between the nozzle and the table is a second speed which is slower than the first speed, the discharge amount of the shaping material is set to a second discharge amount which is smaller than the first discharge amount.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.

In one example, a three-dimensional (3D) printing method is disclosed. The 3D printing method may partition an entirety of a powder bed into a plurality of portions including a first portion and a second portion. The method may position an energy source over first portion of the powder bed, apply irradiation to the first portion until an irradiation dose is reached, and turn off irradiation to the first portion of the powder bed. The 3D printing method may rearrange the energy source and the powder bed to position the energy source over a second portion of the powder bed, apply irradiation to the second portion until the irradiation dose is reached, and turn off irradiation to the second portion of the powder bed.

In one example, a three-dimensional (3D) printing method is disclosed. The 3D printing method may partition an entirety of a powder bed into a plurality of portions including a first portion and a second portion. The method may position an energy source over first portion of the powder bed, apply irradiation to the first portion until an irradiation dose is reached, and turn off irradiation to the first portion of the powder bed. The 3D printing method may rearrange the energy source and the powder bed to position the energy source over a second portion of the powder bed, apply irradiation to the second portion until the irradiation dose is reached, and turn off irradiation to the second portion of the powder bed.

One of the objects of the present application is to provide a technique capable of preventing the generation of excessive metallic vapor during fabrication according to an AM technique. Further, one of the objects of the present application is to provide a technique for reducing machining processing after the fabrication as much as possible or eliminating the necessity thereof. According to one aspect, an AM apparatus configured to manufacture a fabrication object is provided. This AM apparatus includes a first DED nozzle configured to fabricate a contour of a fabrication target and a second DED nozzle configured to fabricate an inner portion of the contour.