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    POWDER DELIVERY DEVICE AND POWDER DELIVERY METHOD FOR PROVIDING RAW MATERIAL POWDER TO A POWDER APPLICATION DEVICE OF A POWDER BED FUSION APPARATUS
    4.
    发明申请
    POWDER DELIVERY DEVICE AND POWDER DELIVERY METHOD FOR PROVIDING RAW MATERIAL POWDER TO A POWDER APPLICATION DEVICE OF A POWDER BED FUSION APPARATUS 审中-公开

    公开(公告)号：US20190176404A1

    公开(公告)日：2019-06-13

    申请号：US16273833

    申请日：2019-02-12

    Applicant: SLM Solutions Group AG

    Inventor： Henner Schoeneborn ,  Lukas Roesgen

    IPC: B29C64/393 ,  B29C64/255 ,  B29C64/153 ,  G06F17/50

    Abstract: A powder delivery device for providing raw material powder to a powder application device of a powder bed fusion apparatus is provided. The powder delivery device includes a powder supply section configured to receive raw material powder, the powder supply section comprising an outlet for providing the raw material powder to the powder application device. The powder delivery device further includes a first physical parameter determining unit arranged at a first location of the powder supply section and configured to determine a first physical parameter in the powder supply section, a control unit configured to determine whether the first physical parameter meets a first tolerance criterion, and a powder treatment unit, wherein the control section is configured to instruct the powder treatment unit to perform a powder treatment in case it determines that the first physical parameter does not meet the first tolerance criterion.

    DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM OF AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
    5.
    发明申请
    DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM OF AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE 审中-公开

    公开(公告)号：US20190070788A1

    公开(公告)日：2019-03-07

    申请号：US16180692

    申请日：2018-11-05

    Applicant: SLM Solutions Group AG

    Inventor： Lukas Roesgen ,  Jan Wilkes

    IPC: B29C64/393 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F3/105 ,  B28B1/00 ,  B28B17/00

    Abstract: A device for calibrating an irradiation system of an apparatus for producing a three-dimensional work piece includes a control unit to control the irradiation system so as to irradiate a radiation beam onto an irradiation plane according to a calibration pattern. The device also includes a sensor arrangement arranged in the irradiation plane to output signals to the control unit in response to being irradiated with the radiation beam according to the calibration pattern. The control unit generates a digital image of an actual irradiation pattern produced by the radiation beam incident on the sensor arrangement based on the signals output by the sensor arrangement, compares the digital image of the actual irradiation pattern with a digital image of a reference pattern so as to determine a deviation between the actual irradiation pattern and the reference pattern, and calibrates the irradiation system based on the determined deviation between the actual irradiation pattern and the reference pattern.

    METHOD AND APPARATUS
    7.
    发明申请
    METHOD AND APPARATUS 有权

    公开(公告)号：US20220193772A1

    公开(公告)日：2022-06-23

    申请号：US17606114

    申请日：2020-03-31

    Applicant: SLM Solutions Group AG

    Inventor： Lukas Roesgen ,  Daniel Brueck ,  Andreas Wiesner

    IPC: B22F10/31 ,  B22F12/17 ,  B22F12/41 ,  B22F12/30 ,  B22F12/90 ,  B33Y30/00 ,  B33Y50/02

    Abstract: We describe a calibration method for calibrating one or more optical elements of an additive layer manufacturing apparatus useable for producing a three-dimensional workpiece, the method comprising: projecting, using the one or more optical elements, an optical pattern onto a material in order to prepare, from said material, solidified material layers using an additive layer manufacturing technique to form a test sample; determining a geometry of the test sample; comparing the determined geometry with a nominal geometry to generate calibration data; and calibrating the one or more optical elements using said calibration data.

    METHOD AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE VIA ADDITIVE LAYER MANUFACTURING
    9.
    发明公开
    METHOD AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE VIA ADDITIVE LAYER MANUFACTURING 审中-公开

    公开(公告)号：US20230191699A1

    公开(公告)日：2023-06-22

    申请号：US17926338

    申请日：2021-05-05

    Applicant: SLM SOLUTIONS GROUP AG

    Inventor： Gesa Rolink ,  Jiachun Chen ,  Andreas Hoppe ,  Lukas Roesgen ,  Dieter Schwarze

    IPC: B29C64/282 ,  B29C64/371 ,  B29C64/393

    CPC classification number: B29C64/282 ,  B29C64/371 ,  B29C64/393 ,  B33Y10/00

    Abstract: We describe a method comprising: defining an irradiation section, in particular an irradiation stripe, on a material layer to be irradiated, in an additive layer manufacturing process, with an irradiation beam scanned across the material layer, and defining, within the irradiation section, two or more parallel or substantially parallel scanning vectors for said scanning of a said irradiation beam across the material layer, wherein all scanning vectors within the irradiation section are parallel or substantially parallel with respect to each other, wherein, based on said defining of the two or more parallel or substantially parallel scanning vectors, a line results which connects a first location, on the material layer, of a change in irradiation energy density of a said irradiation beam for a first one of the two or more parallel or substantially parallel scanning vectors and a second location, on the material layer, of a change in irradiation energy density of a said irradiation beam for a second one of the two or more parallel or substantially parallel scanning vectors, wherein the first scanning vector and the second scanning vector are neighboring scanning vectors, wherein a distance between the first location and the second location is smaller than (i) a distance between the first location and a third location of a change in irradiation energy density of a said irradiation beam for the second one of the two or more parallel or substantially parallel scanning vectors and/or (ii) a distance between the second location and a fourth location of a change in irradiation energy density of a said irradiation beam for the first one of the two or more parallel or substantially parallel scanning vectors, and wherein an angle, which differs from 90 degrees (a) irrespectively of a geometry of a workpiece to be produced using the additive layer manufacturing process, and (b) irrespectively of an orientation of the two or more parallel or substantially parallel scanning vectors with respect to an orientation of the irradiation section, is formed (i) between the first scanning vector and the line, and/or (ii) between the second scanning vector and the line.

    Method and device for controlling an irradiation system for producing workpieces
    10.
    发明授权
    Method and device for controlling an irradiation system for producing workpieces 有权

    公开(公告)号：US11639028B2

    公开(公告)日：2023-05-02

    申请号：US16487290

    申请日：2018-01-15

    Applicant: SLM SOLUTIONS GROUP AG

    Inventor： Andreas Wiesner ,  Jan Wilkes ,  Christiane Thiel ,  Lukas Roesgen

    IPC: B22F3/105 ,  B29C64/153 ,  B33Y30/00 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/277

    Abstract: The invention relates to a method for controlling an irradiation system (20), the irradiation system (20) being used in a device (10) for the additive manufacturing of three-dimensional workpieces and comprising at least three irradiation units (22a-d, 50), the method comprising the following steps: a) defining an irradiation region (30a-d) for each of the irradiation units (22a-d, 50), the irradiation regions (30a-d) each comprising a portion of an irradiation plane (28) which extends parallel to a carrier (16) of the device (10), and the irradiation regions (30a-d) being defined such that they overlap in a common overlap region (34); b) irradiating a raw material powder layer on the carrier (16) to produce a workpiece layer; c) arranging a further raw material powder layer on the already jetted raw material powder layer to produce a further workpiece layer. d) The invention also relates to a device for performing this method.

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