Abstract: Method for producing an object by means of additive manufacturing, wherein said method comprises the steps of: receiving, in a process chamber, a bath of material, wherein a surface level of said bath of material defines an object working area; solidifying, by a solidifying device, a selective layer-part of said material on said surface level; controlled oxidisation, of waste particles originating from said solidifying of said material, by controlling an oxygen level, such that oxidised waste particles are obtained and ignition of said waste particles is avoided. Apparatus for producing an object by means of additive manufacturing.

Abstract: A method for calibrating an apparatus for producing an object by means of additive manufacturing including 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. A method including providing, on or near the support, a calibration marker that faces the solidifying device, and providing a calibration system with an imaging unit that can be directed to the support.

Abstract: A system for producing an object by means of additive manufacturing including an apparatus, having a storage container for storing powdered material that can be solidified, and a process chamber fluidly connected to the storage container and arranged for receiving at least a part of the powdered material for forming a bath of material within the process chamber. Furthermore, a structure is provided for positioning the object in relation to the surface level of the bath of material. The apparatus also includes a solidifying device for solidifying a layer of the bath of material. A supply device is provided, having a supply container for storing a supply of powdered material that can be solidified, wherein the supply device is fluidly connected, or at least connectable, to the storage container, and wherein the apparatus is arranged for transferring powdered material between the supply container and the storage container.

Abstract: An apparatus for producing an object by additive manufacturing including a chamber for receiving a bath of material solidified by exposure to electromagnetic radiation, a support for positioning the object, and a solidifying device for solidifying a layer of the material. A registering device registers a characteristic of a calibration area related to the surface level of the bath of material and a control unit utilizes the characteristic to control the position of the emitted electromagnetic radiation.

Abstract: An apparatus for producing an object by additive manufacturing including a process chamber for receiving a bath of material configured to be solidified, wherein a surface level of the bath of material defines an object working area. A support positions an object to be produced in relation to the surface level. A plurality of solidifying devices are configured to solidify a selective part of the bath of material and operate in substantially the entire object working area. A controller individually controls each of the plurality of solidifying devices such that each device can operate on in a different part of the object working area. A method for producing an object using the apparatus.

Abstract: Method for producing an object by additive manufacturing including the steps of determining, via a first determining unit, a characteristic of a beam of electromagnetic radiation at a first position of the beam and determining, via a second determining unit, the characteristic of the beam of electromagnetic radiation at a second position, and calibrating, via a control unit, the second determining unit according to the characteristic of the beam, determined by the first determining unit. An apparatus for manufacturing an object by additive manufacturing.

Abstract: The invention relates to a method for calibrating an apparatus for producing an object by means of additive manufacturing. The apparatus comprises a process chamber, as well as a support for positioning the object in relation to a surface level of a bath of material to be solidified. A solidifying device is arranged for emitting a beam of radiation on the surface level for solidifying a selective part of said material. The solidifying device comprises a focus member for adjusting a focus setting. The method according to the invention comprises the steps of controlling the solidifying device for making test patterns at different focus settings. A calibration system with a sensor unit is used for determining characteristics of test patterns, and a calibrated focus setting is determined based on the characteristics.

Abstract: Apparatus for producing an object by means of additive manufacturing, comprising: a process chamber for receiving on a build surface of a build plate a bath of powdered material which can be solidified; a support for supporting on a supporting surface thereof said build plate in relation to a surface level of said bath of powdered material, wherein said build plate is removably connectable to said supporting surface; a solidifying device for solidifying a selective part of said material by emitting electromagnetic radiation; and a build plate takeover device comprising an actuating element for placing said build plate onto said supporting surface of said support for producing said object and removing said build plate from said supporting surface of said support. Method for producing an object by means of additive manufacturing.

Abstract: Apparatus for producing an object by means of additive manufacturing, comprising: a process chamber for receiving on a build surface of a build plate a bath of powdered material which can be solidified; a support for positioning said build plate in relation to a surface level of said bath of powdered material; a solidifying device for solidifying a selective part of said material; and a homing device for moving said build surface, by said support, to a home position such that said object can be build on said build surface of said build plate, wherein said homing device comprises a homing member which can be displaced along said build surface of said build plate, wherein said homing device is designed for moving said build surface to said home position until a measured force for displacing said homing member is within a pre-determined range. Method for producing an object by means of additive manufacturing.

Abstract: The invention relates to a method for calibrating an apparatus for producing an object by means of additive manufacturing. The apparatus comprises a process chamber, as well as a support for positioning the object in relation to a surface level of a bath of material to be solidified. A solidifying device is arranged for emitting a beam of radiation on the surface level for solidifying a selective part of said material. The solidifying device comprises a focus member for adjusting a focus setting. The method according to the invention comprises the steps of controlling the solidifying device for making test patterns at different focus settings. A calibration system with a sensor unit is used for determining characteristics of test patterns, and a calibrated focus setting is determined based on the characteristics.

Abstract: A method for calibrating an apparatus for producing an object by means of additive manufacturing including 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. A method including providing, on or near the support, a calibration marker that faces the solidifying device, and providing a calibration system with an imaging unit that can be directed to the support.

Abstract: Apparatus for producing an object by means of additive manufacturing, comprising: a process chamber for receiving on a build surface of a build plate a bath of powdered material which can be solidified; a support for supporting on a supporting surface thereof said build plate in relation to a surface level of said bath of powdered material, wherein said build plate is removably connectable to said supporting surface; a solidifying device for solidifying a selective part of said material by emitting electromagnetic radiation; and a build plate takeover device comprising an actuating element for placing said build plate onto said supporting surface of said support for producing said object and removing said build plate from said supporting surface of said support. Method for producing an object by means of additive manufacturing.

Abstract: A system for producing an object by means of additive manufacturing including an apparatus, having a storage container for storing powdered material that can be solidified, and a process chamber fluidly connected to the storage container and arranged for receiving at least a part of the powdered material for forming a bath of material within the process chamber. Furthermore, a structure is provided for positioning the object in relation to the surface level of the bath of material. The apparatus also includes a solidifying device for solidifying a layer of the bath of material. A supply device is provided, having a supply container for storing a supply of powdered material that can be solidified, wherein the supply device is fluidly connected, or at least connectable, to the storage container, and wherein the apparatus is arranged for transferring powdered material between the supply container and the storage container.

Abstract: Apparatus for producing an object by means of additive manufacturing, comprising: a process chamber for receiving on a build surface of a build plate a bath of powdered material which can be solidified; a support for positioning said build plate in relation to a surface level of said bath of powdered material; a solidifying device for solidifying a selective part of said material; and a homing device for moving said build surface, by said support, to a home position such that said object can be build on said build surface of said build plate, wherein said homing device comprises a homing member which can be displaced along said build surface of said build plate, wherein said homing device is designed for moving said build surface to said home position until a measured force for displacing said homing member is within a pre-determined range. Method for producing an object by means of additive manufacturing.

Abstract: Apparatus for producing an object by means of additive manufacturing, comprising: a process chamber for receiving on a build surface of a build plate a bath of powdered material which can be solidified; a support for positioning said build plate in relation to a surface level of said bath of powdered material in said process chamber; a solidifying device for solidifying a selective part of said material; and a homing device for moving said build surface, by said support, to a home position. Method of producing an object by means of additive manufacturing on a build surface of a build plate.

Abstract: The invention relates to an apparatus for producing an object by means of additive manufacturing, comprising a frame unit and a process unit connected to said frame unit. The process unit comprises a process chamber for receiving a bath of powdered material which can be solidified, and a support for positioning the object in relation to a surface level of the bath of material. The apparatus further comprises a solidifying device connected to the frame unit for solidifying a selective part of the powdered material. The apparatus according to the invention comprises a plurality of build plate elements connected to the support.

Abstract: An apparatus for producing an object by additive manufacturing including a chamber for receiving a bath of material solidified by exposure to electromagnetic radiation, a support for positioning the object, and a solidifying device for solidifying a layer of the material. A registering device registers a characteristic of a calibration area related to the surface level of the bath of material and a control unit utilizes the characteristic to control the position of the emitted electromagnetic radiation.

Abstract: Mount (4) for positioning an optical element having one or more optically active surfaces, such as a mirror segment having a reflective surface. The mount comprises a main frame and a plurality of struts (32), each of the struts being configured to support the optical element at a support contact (26) and to restrict displacement of the support contact perpendicular to the optically active surface. The mount comprises at least one restrictive element (16), wherein the at least one restrictive element is mechanically coupled to a said strut near the support contact and wherein each of the at least one restrictive element is arranged to restrict displacement of the optical element with respect to the main frame in a direction substantially parallel to the optically active surface and to allow for displacement of the optical element with respect to the main frame in another direction substantially parallel to the optically active surface.