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156 条记录 (耗时 0.03 秒)

    DEVICES, SYSTEMS, AND METHODS FOR CALIBRATING AND OPERATING AN ADDITIVE MANUFACTURING SYSTEM HAVING A PLURALITY OF ELECTRON BEAM GUNS
    6.
    发明申请
    DEVICES, SYSTEMS, AND METHODS FOR CALIBRATING AND OPERATING AN ADDITIVE MANUFACTURING SYSTEM HAVING A PLURALITY OF ELECTRON BEAM GUNS 有权

    公开(公告)号：US20220402035A1

    公开(公告)日：2022-12-22

    申请号：US17349997

    申请日：2021-06-17

    申请人： ARCAM AB

    发明人： Anders Snis

    IPC分类号： B22F10/31 ,  B22F10/85 ,  B22F12/30 ,  B22F12/41 ,  B22F12/45 ,  B22F12/90 ,  B33Y50/02

    摘要： Devices, systems and methods for calibrating and operating an additive manufacturing system are disclosed. A calibration system for an electron beam additive manufacturing system having a plurality of electron beam guns includes a calibration probe positioned in a build chamber of the electron beam additive manufacturing system, a sensing device positioned to measure and acquire a response generated as a result of impingement of electron beams emitted from the plurality of electron beam guns on the calibration probe, the sensing device generating a response signal as a result of the measured and acquired response, and an analysis component communicatively coupled to the sensing device and programmed to analyze and evaluate the response signal.

    Methods for detecting a position of an energy beam spot and apparatuses for performing the same
    7.
    发明授权
    Methods for detecting a position of an energy beam spot and apparatuses for performing the same 有权

    公开(公告)号：US11493650B2

    公开(公告)日：2022-11-08

    申请号：US16871480

    申请日：2020-05-11

    申请人： Arcam AB

    发明人： David Svensson

    IPC分类号： G01T1/29 ,  B33Y50/02 ,  B22F10/28 ,  B22F12/90 ,  B23K15/00

    摘要： A method for detecting a position of an energy beam comprises mapping a first density modulated x-ray signal with a plurality of locations on an energy beam target, thereby generating a model of a background x-ray intensity. The method further comprises forming an x-ray signal time series using subsequent intensity modulated x-ray signals, each resulting from scanning the energy beam along the energy beam target in one of a plurality of directions at one of a plurality of speeds, and determining the position of the energy beam based upon a received x-ray signal strength based on the x-ray signal time series and the model of the background x-ray intensity.

    METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS
    8.
    发明申请
    METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS 有权

    公开(公告)号：US20220176458A1

    公开(公告)日：2022-06-09

    申请号：US17682226

    申请日：2022-02-28

    申请人： Arcam AB

    发明人： Anders Snis

    IPC分类号： B22F12/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K15/00 ,  B29C64/268 ,  B23K15/06 ,  B29C64/277 ,  B23K26/082 ,  B22F3/10 ,  B23K26/08

    摘要： A method for producing three-dimensional objects layer by layer using a powdery material which can be solidified by irradiating it with at least two electron beams, said method comprises a pre-heating step, wherein the pre-heating step comprises the sub-step of scanning a pre-heating powder layer area (100) by scanning a first electron beam in a first region (I) and by scanning a second electron beam in a second region (II) distributed over the pre-heating powder layer area (100), wherein consecutively scanned paths are separated by, at least, a security distance (ΔY), said sub-step further comprising the step of synchronising the preheating of said first and second electron beams when simultaneously preheating said powder material within said first and second regions respectively, so that said first and second electron beams are always separated to each other with at least a minimum security distance (ΔX).

    Depowdering apparatuses for additive manufacturing and methods for using the same
    9.
    发明授权
    Depowdering apparatuses for additive manufacturing and methods for using the same 有权

    公开(公告)号：US11273607B2

    公开(公告)日：2022-03-15

    申请号：US16684696

    申请日：2019-11-15

    申请人： ARCAM AB

    发明人： Stefan Olausson ,  Håkan Sjölander

    IPC分类号： B29C64/35 ,  B29C64/357 ,  B29C64/232 ,  B29C64/393 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

    摘要： A depowdering apparatus for depowdering a cake comprising a build part includes a depowdering chamber, a blast nozzle, and a build elevator. The depowdering chamber includes a bottom surface and a build inlet extending through the bottom surface, where the build inlet includes an inlet axis that is substantially vertically oriented. The blast nozzle is positioned within the depowdering chamber and oriented to direct a fluid stream toward the inlet axis. The blast nozzle is laterally spaced from the inlet axis and operable to revolve about the inlet axis on a travel path encircling the inlet axis. The build elevator is arranged below the build inlet in a vertical direction and is operable to raise the cake comprising the build part through the build inlet and into the depowdering chamber along the inlet axis as the blast nozzle is revolved about the inlet axis on the travel path.