A three-dimensional modeling device includes a table supporting a powder material and a model created from the powder material, a processing section disposed so as to face the table and obtaining the model by processing the powder material, and a rotation unit causing the table to rotate relative to the processing section around a rotary axis. The processing section has a plurality of processing units disposed around the rotary axis. The processing units supply the powder material to the table, preheat the supplied powder material, and emit an energy beam to the preheated powder material.

A method for producing a catalyst system for gas reactions comprising at least one planar structure of noble metal having gas-permeable openings, comprising the steps of:

(1) providing at least one noble metal powder consisting of at least substantially spherical noble metal particles, and

(2) repeatedly applying the noble metal powder or powders provided in step (1) in layers to a substrate in a build chamber, respectively followed by an at least partial melting of the respective noble metal powder applied as a layer with high-energy radiation, and allowing the melted noble metal powder to solidify within the scope of additive manufacturing.

The invention relates to an apparatus for producing an object by means of additive manufacturing, comprising a process chamber for receiving a bath of material which can be solidified by exposure to electromagnetic radiation; a support for positioning the object in relation to the surface level of the bath of material; and a solidifying device for solidifying a selective layer-part of the material on the surface level by means of electromagnetic radiation. Furthermore optical control device is provided with a focus unit in an optical pathway of the electromagnetic radiation of the solidifying device, and arranged for controlling at least the focus of the electromagnetic radiation emitted by the solidifying device on the surface level. According to the invention, the optical control device comprises a sensor element arranged for detecting a measure for the accuracy of the focus of the electromagnetic radiation and a focus correction lens element that is arranged to be movable. By moving said focus correction lens element, focus may be corrected, for example due to thermal behaviour of the optical system.

An electron beam source including a cathode, an anode, a means for deflecting an electron beam over a target surface and at least one vacuum pump, the electron beam source further including a contraction area arranged between the anode and the means for deflecting the electron beam where a hole in the contraction area is aligned with a hole in the anode with respect to the cathode, a first vacuum pump is arranged between the contraction area and the anode and a second vacuum pump is arranged above the anode, a gas inlet is provided between the contraction area and the means for deflecting the electron beam, wherein a first crossover of the electron beam is arranged between the cathode and the anode and a second crossover is arranged at or in close proximity to the contraction area.

An additive manufacturing apparatus includes a platform, a dispenser configured to deliver a plurality of successive layers of feed material onto the platform, at least one light source configured to generate a first light beam and a second light beam, a polygon mirror scanner, an actuator, and a galvo mirror scanner. The polygon mirror scanner is configured to receive the first light beam and reflect the first light beam towards the platform. Rotation of the first polygon mirror causes the light beam to move in a first direction along a path on a layer of feed material on the platform. The actuator is configured to cause the path to move along a second direction at a non-zero angle relative to the first direction. The galvo mirror scanner system is configured to receive the second light beam and reflect the second light beam toward the platform.

An additive manufacturing apparatus includes a platform, a dispenser configured to deliver a plurality of successive layers of feed material onto the platform, at least one light source configured to generate a first light beam and a second light beam, a polygon mirror scanner, an actuator, and a galvo mirror scanner. The polygon mirror scanner is configured to receive the first light beam and reflect the first light beam towards the platform. Rotation of the first polygon mirror causes the light beam to move in a first direction along a path on a layer of feed material on the platform. The actuator is configured to cause the path to move along a second direction at a non-zero angle relative to the first direction. The galvo mirror scanner system is configured to receive the second light beam and reflect the second light beam toward the platform.

Systems and methods for curing adhesives in a robotic assembly cell are disclosed. An apparatus in accordance with an aspect of the present disclosure comprises a chassis, a gearbox, coupled to the chassis, and a radiation head, coupled to the gearbox, the radiation head emitting radiation in a direction, wherein the radiation head is moveable with respect to the chassis.

Systems and methods for curing adhesives in a robotic assembly cell are disclosed. An apparatus in accordance with an aspect of the present disclosure comprises a chassis, a gearbox, coupled to the chassis, and a radiation head, coupled to the gearbox, the radiation head emitting radiation in a direction, wherein the radiation head is moveable with respect to the chassis.

Systems and methods for curing adhesives in a robotic assembly cell are disclosed. An apparatus in accordance with an aspect of the present disclosure comprises a chassis, a gearbox, coupled to the chassis, and a radiation head, coupled to the gearbox, the radiation head emitting radiation in a direction, wherein the radiation head is moveable with respect to the chassis.

In a method of providing a flow for a process chamber of a device for producing a three-dimensional object by layer-wise application and selective solidification of a building material in a build area a process gas is supplied to the process chamber in a lower altitude region of the process chamber, wherein the process chamber includes a gas inlet for introducing the process gas into the process chamber and a gas outlet for discharging the process gas from the process chamber. The gas inlet and the gas outlet are provided in the lower altitude region of the process chamber and the process gas flows in a main flow from the gas inlet to the gas outlet, and wherein a secondary flow is located in a sub-region of the lower altitude region, which sub-region is located above a bottom surface of the process chamber surrounding the build area.