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AssigneeConcept Laser GmbH
InventorsAndré PETRATSCHEK, Denise HIEMANN
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Method for calibrating an apparatus (1) for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam (2-5), which apparatus (1) comprises at least two irradiation units (7-10), each adapted to generate an energy beam (2-5), wherein each irradiation unit (7-10) is adapted to guide the corresponding energy beam (2-5) across an individual guiding region (21, 23, 25, 27) in a build plane (11), wherein at least two guiding regions (21, 23, 25, 27) overlap in at least one overlap region (29-33), comprising the steps: generating at least one calibration pattern (14-17) in the at least one overlap region (29-33) via each of the at least two energy beams (2-5), wherein the at least two calibration patterns (14-17) are generated in defined relative positions forming a superordinate pattern (18) in the at least one overlap region (29-33) determining a calibration status of the at least two irradiation units (7-10) based on a calibration information relating to the spatial arrangement of the at least two calibration patterns (14-17) in the superordinate pattern (18), in particular the relative position adjusting the at least one irradiation unit (7-10) dependent on the calibration status.
Method for calibrating an apparatus (1) for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam (2-5), which apparatus (1) comprises at least two irradiation units (7-10), each adapted to generate an energy beam (2-5), wherein each irradiation unit (7-10) is adapted to guide the corresponding energy beam (2-5) across an individual guiding region (21, 23, 25, 27) in a build plane (11), wherein at least two guiding regions (21, 23, 25, 27) overlap in at least one overlap region (29-33), characterized by
Control unit (34) for calibrating an apparatus (1) for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam (2-5), which apparatus (1) comprises at least two irradiation units (7-10), each adapted to generate an energy beam (2-5), wherein each irradiation unit (7-10) is adapted to guide the corresponding energy beam (2-5) in an individual guiding region (21, 23, 25, 27) across the build plane (11), wherein at least two guiding regions (21, 23, 25, 27) overlap in at least one overlap region (29-33), characterized in that the control unit (34) is adapted to generate at least one calibration pattern (14-17) in the at least one overlap region (29-33) via each of the irradiation units (7-10) being adapted to generate the at least two energy beams (2-5), wherein the control unit (34) is adapted to generate the at least two calibration patterns (14-17) in defined relative positions forming a superordinate pattern (18) in the at least one overlap region (29-33), wherein the control unit (34) is adapted to determine a calibration status of the at least two irradiation units (7-10) based on a calibration information relating to the spatial arrangement of the at least two calibration patterns (14-17) in the superordinate pattern (18), in particular the relative position, wherein the control unit (34) is adapted to adjust the at least one irradiation unit (7-10) dependent on the calibration status.
Dependencies are inferred from the claim text.