An additive manufacturing system configured to additively build an article can include an energy applicator, a build platform, and a powder nozzle configured to eject powder toward the build platform to be acted on by the energy applicator. The system can include a control module configured to control the energy applicator to create an amorphous structure forming at least a portion of the article.

A machine for additive manufacturing of components by sintering powder includes a framework, a working zone, at least two beam emission and control modules, and at least two actuators. Each module, which is structured to emit an energy beam and to control the energy beam, is mounted inside the framework and is provided with an emission source and an optical system for focusing the energy beam emitted from the source. Each module acts on the working zone to manufacture a same component. Each optical system is axially movable in translation with respect to the framework. The actuators are associated with the optical systems, respectively, and are arranged to adjust axial positions of the optical systems with respect to the working zone, the axial positions being adjustable independently of each other.

The invention relates to a device for producing three-dimensional workpieces, The device comprises a carrier for receiving raw material powder and a radiation unit for selectively radiating the raw material powder applied to the carrier with electromagnetic radiation or particle radiation in order to produce on the carrier a workpiece made of the raw material powder by a generative layering construction process. The device also comprises a vertical movement means, which is designed to move the radiation unit vertically relative to the carrier, and a cylinder construction wall, which extends substantially vertically and which constitutes a lateral delimitation for the raw material powder applied to the carrier, wherein the cylinder construction wall is designed to increase its vertical height during the construction process.

The present invention concerns a device 1 for the additive manufacture of a three-dimensional object (2) by successive, layered, selective illumination and associated solidification of built material layers formed in a construction plane (11) of a built material (3) that can be solidified by means of at least one energy beam (4), comprising an illumination device (9) which comprises at least one illumination element (10) to generate an energy beam (4) directed to the construction plane (11) for the selective illumination of a built material layer that is to be solidified, wherein at least the one illumination element (10) is movably supported by means of a magnetic moving and mounting device (12) in at least one degree of freedom relative to the construction plane (11).

The present invention concerns a device 1 for the additive manufacture of a three-dimensional object (2) by successive, layered, selective illumination and associated solidification of built material layers formed in a construction plane (11) of a built material (3) that can be solidified by means of at least one energy beam (4), comprising an illumination device (9) which comprises at least one illumination element (10) to generate an energy beam (4) directed to the construction plane (11) for the selective illumination of a built material layer that is to be solidified, wherein at least the one illumination element (10) is movably supported by means of a magnetic moving and mounting device (12) in at least one degree of freedom relative to the construction plane (11).

The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the gas plume) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

An additively manufactured three-dimensional article includes layers successively built up from a metal powder by an additive manufacturing process by scanning a selected portion of the metal powder with electromagnetic radiation, and an anti-counterfeiting mark formed in at least one layer of the layers during the additive manufacturing process.

A metal laminated and shaped object is shaped by optical shaping. A three-dimensional laminating and shaping apparatus includes a shaping stage as a place where a metal laminated and shaped object is shaped, a moving unit that moves the shaping stage, a supplier that supplies metal powder particles in a layer on a surface of the shaping stage, and a light irradiator that irradiates, with a laser beam, powder particles at a predetermined position among the powder particles supplied in the layer on the surface of the shaping stages. The light irradiator includes a laser diode that emits the laser beam, and an electromechanical mirror that reflects the laser beam and irradiates, with the laser beam, the metal powder particles at the predetermined position among the metal powder particles supplied in the layer on the surface of the shaping stage. The supplier supplies metal powder particles having a particle size of not more than 50 m. The moving unit moves the shaping stage by one layer in a direction away from the light irradiator in accordance with the particle size.

A metal laminated and shaped object is shaped by optical shaping. A three-dimensional laminating and shaping apparatus includes a shaping stage as a place where a metal laminated and shaped object is shaped, a moving unit that moves the shaping stage, a supplier that supplies metal powder particles in a layer on a surface of the shaping stage, and a light irradiator that irradiates, with a laser beam, powder particles at a predetermined position among the powder particles supplied in the layer on the surface of the shaping stages. The light irradiator includes a laser diode that emits the laser beam, and an electromechanical mirror that reflects the laser beam and irradiates, with the laser beam, the metal powder particles at the predetermined position among the metal powder particles supplied in the layer on the surface of the shaping stage. The supplier supplies metal powder particles having a particle size of not more than 50 m. The moving unit moves the shaping stage by one layer in a direction away from the light irradiator in accordance with the particle size.

In an example, a method comprises providing a layer of build material on a support, and applying energy to the layer of build material using an energy source. The method may further comprise reducing a spacing between the energy source and the support and following the reduction of the spacing, applying energy to the layer of build material using the energy source to cause fusion in at least part of the layer of build material.