Abstract: An unpacking system for use in an apparatus for producing three-dimensional work pieces by irradiating layers of a raw material powder electromagnetic or particle radiation comprises a supporting structure which is configured to support a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, the carrier being configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. A lowering mechanism of the unpacking system is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier until a three-dimensional work piece received on the carrier can be removed from the carrier.

Abstract: The invention relates to an apparatus (10) for producing a three-dimensional workpiece, comprising: a carrier (12) adapted to receive material (14) for producing the workpiece; at least one mobile production unit (24), a moving unit (18) that is adapted to move the mobile production unit (24) relative to the carrier (12) so as to position the mobile production unit (24) oppositely to different sections of the carrier (12); a sensing unit that is adapted to generate sensor signals relating to a relative arrangement of the mobile production unit (24) and the carrier (12); and a control unit that is configured to, in addition to the positioning of the mobile production unit (24) via the moving unit (18), provide at least one fine positioning function to compensate for an offset from a desired relative arrangement of the mobile production unit (24) and the carrier (18) based on the sensor signals generated by the sensing unit.

Abstract: An apparatus for producing a three-dimensional work piece, the apparatus comprises a process chamber accommodating a carrier for receiving a raw material powder, an irradiation device for selectively irradiating electromagnetic or particle radiation onto the raw material powder on the carrier in order to produce a work piece made of said raw material powder by an additive layer construction method, a first gas inlet for supplying gas to the process chamber and a gas outlet for discharging gas from the process chamber, wherein the first gas inlet and the gas outlet are configured and arranged in such a manner that a first gas flow across the carrier is generated, a transmission element which allows the transmission of the electromagnetic or particle radiation emitted by the irradiation device into the process chamber, and a second gas inlet for supplying gas to the process chamber, wherein the second gas inlet is configured and arranged in such a manner that a second gas flow in a direction facing away from th

Abstract: The invention relates to a device (10) for producing a three-dimensional workpiece by carrying out an additive layering process, wherein the device (10) comprises: a build area (17) that is configured to receive a raw material powder layer; a powder application device (14) that is configured to deploy the raw material powder layer onto the build area (17); an irradiation system (20) that is configured to selectively irradiate the raw material powder layer on the build area (17); wherein the device (10) is configured to provide at least one gas flow (48) that is directed along an axis (A) extending from a first edge region (44) of the build area (17) towards a second edge region (46) of the build area (17); and wherein the device (10) comprises at least one gas flow guide element (36) that is configured to divert at least a part of the gas flow (48) away from the build area (17) before said gas flow (48) reaches the second edge region (46); wherein the gas flow guide element (36) comprises a gas supply

Abstract: The invention relates to a device (1) for producing three-dimensional workpieces (15), comprising a carrier (7) for receiving raw material powder (9), a build chamber wall (11, 11a, 11b) which extend substantially vertically and which is adapted to laterally delimit and support the raw material powder (9) applied to the carrier (7); an irradiation unit (17) for selectively irradiating the raw material powder (9) applied to the carrier (7) with electromagnetic radiation or particle radiation in order to produce on the carrier (7) a workpiece (15) manufactured from the raw material powder (9) by an additive layer building method, wherein the irradiation unit (17) comprises at least one optical element; and a vertical movement device (31) which is adapted to move the irradiation unit (17) vertically relative to the carrier (7).

Abstract: An unpacking device for use in an apparatus for producing a three-dimensional work piece by irradiating layers of a raw material powder with electromagnetic or particle radiation, the unpacking device comprises a holding device which is configured to hold a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, wherein the carrier is configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. An engagement unit of the unpacking device is configured to engage with the carrier of the building chamber arrangement. A moving mechanism is configured to cause a relative movement between the building chamber and the engagement unit with the carrier engaged therewith so as to allow a separation of the carrier with a three-dimensional work piece received thereon from the building chamber.

Abstract: An apparatus for producing a three-dimensional work piece comprises a carrier to receive a layer of raw material powder, a control unit, an irradiation system adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier, wherein the control unit controls the operation of the irradiation system in such a manner that the raw material powder is heated to a first temperature which allows sintering and/or melting of the raw material powder in order to generate a layer of the three-dimensional work piece, and a heating system adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier, wherein the control unit is adapted to control the operation of the heating system in such a manner that the raw material powder is heated to a second temperature that is lower than the first temperature.

Abstract: The invention relates to a device (10) for the layered production of a three-dimensional workpiece, comprising: a build space (30) in which the workpiece is manufacturable by selectively solidification of raw material powder layers; an irradiating system (20) which is adapted to selectively solidify the raw material powder layers in the build space (30) by emitting a processing beam; at least one calibrating structure (36); a sensor arrangement (25) which is adapted to detect an irradiation of the calibrating structure (36) by the irradiating system (20); and a control unit (26) which is adapted to calibrate the irradiating system (20) on the basis of detection information of the sensor arrangement, wherein the calibrating structure (36) is arranged outside the build space (30). The invention also relates to a method for calibrating an irradiating system of a device for the layer-by-layer manufacture of a three-dimensional workpiece.

Abstract: A leveling slider exchange arrangement for use in an apparatus for manufacturing three-dimensional work pieces by irradiating powder layers with electromagnetic radiation or particle radiation, the leveling slider exchange arrangement comprises a powder application device adapted to apply a raw material powder onto a carrier and a leveling slider adapted to level the raw material powder applied onto the carrier by means of the powder application device. An attachment mechanism is adapted to releasably attach the leveling slider in a leveling slider attachment position in the powder application device. A storage chamber is adapted to store at least one exchange leveling slider, the storage chamber being connected to a connecting channel adapted to connect the storage chamber to the leveling slider attachment position in the powder application device.

Abstract: The application relates to a device for producing three-dimensional workpieces, the device including: a structural surface designed to receive a molding compound; and an irradiation arrangement designed to selectively irradiate the molding compound on the structural surface with electromagnetic radiation, in order to produce a workpiece by means of generative layer construction, where the irradiation device comprises a plurality of irradiation units, the irradiation units being designed to irradiate an individual region of the structural surface respectively associated with the irradiation units, and where the beams emitted by the irradiation units respectively have a cross-sectional surface corresponding to between approx. 2% and approx. 170% of the surface of the respectively associated individual region. The application also relates to the use of such a device and to a method for producing three-dimensional workpieces by means of such a device.

Abstract: An apparatus for producing a three-dimensional workpiece is provided, the apparatus including a carrier for receiving a raw material powder, at least a first irradiation device for selectively irradiating an electromagnetic or particle radiation beam onto raw material powder being deposited on at least one build area of the carrier in order to produce a workpiece made of the raw material powder by an additive layer construction method, and at least a first and a second powder application device configured to simultaneously deposit raw material powder onto the same build area to produce a sequence of raw material powder layers on top of one another, wherein the irradiation device is configured to irradiate a section of the build area between the powder application devices.

Abstract: A device (48) for calibrating an irradiation system (18) of an apparatus (10) for producing a three-dimensional work piece comprises a control unit (50) adapted to control the irradiation system (18) so as to irradiate a radiation beam (22; 22a, 22b) onto an irradiation plane (52) according to a calibration pattern. The device (48) further comprises a sensor arrangement (56) adapted to be arranged in the irradiation plane (52) and to output signals to the control unit (50) in response to being irradiated with the radiation beam (22; 22a, 22b) according to the calibration pattern.

Abstract: A carrier arrangement (30) comprises a carrier element (34) having a carrier surface (36) and a plurality of supporting elements (38) attached to the carrier element (34), wherein each supporting element (38) has a supporting surface (40) extending from the carrier surface (36) of the carrier element (34) and being adapted to interact with a first surface (42) of a component (32) to be repaired.

Abstract: The invention relates to an apparatus for producing a three-dimensional workpiece, said apparatus comprising: a carrier being arranged in a process chamber of the apparatus and adapted to receive a layer of raw material powder; an irradiation device for selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier in order to produce the workpiece from said raw material powder by an additive layer construction method; and a shielding gas supply system adapted to supply a shielding gas to the process chamber, wherein the apparatus further comprises a shielding gas control system that is adapted to control the temperature of the shielding gas.

Abstract: An unpacking system (26) for use in an apparatus (10) for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises a supporting structure (28) which is configured to support a building chamber arrangement (25). The building chamber arrangement (25) comprises a building chamber (18) accommodating a carrier (16), the carrier (16) being configured to receive a three-dimensional work piece (11) produced from a raw material powder by an additive layering process. A lowering mechanism (30) of the unpacking system (26) is configured to apply a driving force to the building chamber (18) so as to lower the building chamber (18) relative to the carrier (16) until a three-dimensional work piece (11) received on the carrier (16) can be removed from the carrier (16).

Abstract: An unpacking device for use in an apparatus for producing a three-dimensional work piece by irradiating layers of a raw material powder with electromagnetic or particle radiation, the unpacking device comprises a holding device which is configured to hold a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, wherein the carrier is configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. An engagement unit of the unpacking device is configured to engage with the carrier of the building chamber arrangement. A moving mechanism is configured to cause a relative movement between the building chamber and the engagement unit with the carrier engaged therewith so as to allow a separation of the carrier with a three-dimensional work piece received thereon from the building chamber.

Abstract: A leveling slider exchange arrangement for use in an apparatus for manufacturing three-dimensional work pieces by irradiating powder layers with electromagnetic radiation or particle radiation, the leveling slider exchange arrangement comprises a powder application device adapted to apply a raw material powder onto a carrier and a leveling slider adapted to level the raw material powder applied onto the carrier by means of the powder application device. An attachment mechanism is adapted to releasably attach the leveling slider in a leveling slider attachment position in the powder application device. A storage chamber is adapted to store at least one exchange leveling slider, the storage chamber being connected to a connecting channel adapted to connect the storage chamber to the leveling slider attachment position in the powder application device.

Abstract: A powder application arrangement for use in an apparatus for manufacturing work pieces by irradiating powder layers with electromagnetic radiation or particle radiation, the powder application arrangement comprises a carrier adapted to receive layers of a raw material powder and a work piece made of the raw material powder by a generative layer construction method. The powder application arrangement further includes a powder application device configured to deposit the raw material powder onto the carrier At least one camera is attached to the powder application device in such a position that it is capable of acquiring images of at least one of a surface of a raw material powder layer applied onto the carrier by means of the powder application device and a surface of the work piece made of the raw material powder by a generative layer construction method while the powder application device is moved across the carrier.

Abstract: An apparatus for producing a three-dimensional work piece comprises a carrier to receive a layer of raw material powder, a control unit, an irradiation system adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier, wherein the control unit controls the operation of the irradiation system in such a manner that the raw material powder is heated to a first temperature which allows sintering and/or melting of the raw material powder in order to generate a layer of the three-dimensional work piece, and a heating system adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier, wherein the control unit is adapted to control the operation of the heating system in such a manner that the raw material powder is heated to a second temperature that is lower than the first temperature.

Abstract: An apparatus for producing a three-dimensional work piece, the apparatus comprises a process chamber accommodating a carrier for receiving a raw material powder, an irradiation device for selectively irradiating electromagnetic or particle radiation onto the raw material powder on the carrier in order to produce a work piece made of said raw material powder by an additive layer construction method, a first gas inlet for supplying gas to the process chamber and a gas outlet for discharging gas from the process chamber, wherein the first gas inlet and the gas outlet are configured and arranged in such a manner that a first gas flow across the carrier is generated, a transmission element which allows the transmission of the electromagnetic or particle radiation emitted by the irradiation device into the process chamber, and a second gas inlet for supplying gas to the process chamber, wherein the second gas inlet is configured and arranged in such a manner that a second gas flow in a direction facing away from th