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    Powder refill system for an additive manufacturing machine
    5.
    发明授权
    Powder refill system for an additive manufacturing machine 有权

    公开(公告)号：US11141918B2

    公开(公告)日：2021-10-12

    申请号：US16761758

    申请日：2018-11-02

    Applicant: General Electric Company

    Inventor： Justin Mamrak ,  MacKenzie Ryan Redding

    IPC: B29C64/329 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/255 ,  B29C64/393 ,  B22F10/20 ,  B22F10/30

    Abstract: An additive manufacturing machine (910) includes a build unit (920) including a powder dispenser (906) having a hopper (904) for receiving a volume of additive powder (902). A powder supply system (1000) includes a powder supply source (940) and a conveyor (1024) for transporting dispensed additive powder (902) to the hopper (904). A supply sensing system (1060) monitors the additive powder (902) that is dispensed from the powder supply source (940) and transported to the hopper (904) and a hopper sensing system (1040) monitors the additive powder (902) within the hopper (904). Each of these systems includes one or more powder level sensors (1042, 1044, 1062), weight sensors (1050, 1064), and/or vision systems (1054, 1070) for monitoring the additive powder (902).

    POWDER REFILL SYSTEM FOR AN ADDITIVE MANUFACTURING MACHINE
    6.
    发明申请
    POWDER REFILL SYSTEM FOR AN ADDITIVE MANUFACTURING MACHINE 审中-公开

    公开(公告)号：US20200262147A1

    公开(公告)日：2020-08-20

    申请号：US16761758

    申请日：2018-11-02

    Applicant: General Electric Company

    Inventor： Justin Mamrak ,  MacKenzie Ryan Redding

    IPC: B29C64/329 ,  B22F3/105 ,  B29C64/153 ,  B29C64/255 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02

    Abstract: An additive manufacturing machine (910) includes a build unit (920) including a powder dispenser (906) having a hopper (904) for receiving a volume of additive powder (902). A powder supply system (1000) includes a powder supply source (940) and a conveyor (1024) for transporting dispensed additive powder (902) to the hopper (904). A supply sensing system (1060) monitors the additive powder (902) that is dispensed from the powder supply source (940) and transported to the hopper (904) and a hopper sensing system (1040) monitors the additive powder (902) within the hopper (904). Each of these systems includes one or more powder level sensors (1042, 1044, 1062), weight sensors (1050, 1064), and/or vision systems (1054, 1070) for monitoring the additive powder (902).

    Leg elimination strategy for hatch pattern
    7.
    发明授权
    Leg elimination strategy for hatch pattern 审中-公开

    公开(公告)号：US10668534B2

    公开(公告)日：2020-06-02

    申请号：US15451043

    申请日：2017-03-06

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Justin Mamrak ,  MacKenzie Ryan Redding

    IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: A scanning technique for the additive manufacturing of an object. The method comprises the irradiation a portion of a given layer of powder to form a fused region using an energy source. When forming an object layer by layer, the irradiation follows a first irradiation pattern at least partially bounded by a stripe region. When forming the first fused region using a first irradiation pattern a first series of solidification lines are formed, at angle other than 90° with respect to a substantially linear stripe region boundary. A series of second solidification lines are formed that intersecting the end of the first solidification line at a first angle other than 0° and 180° with respect to the first solidification line. A third series of solidification lines are formed that are substantially parallel to a first series of solidification lines and intersect one of the second solidification lines.

    Large scale additive machine
    8.
    发明授权
    Large scale additive machine 有权

    公开(公告)号：US10022795B1

    公开(公告)日：2018-07-17

    申请号：US15406471

    申请日：2017-01-13

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： MacKenzie Ryan Redding ,  Zachary David Fieldman ,  Justin Mamrak

    IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B23K26/08 ,  B23K26/14 ,  B23K15/00 ,  B29C64/153

    Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

    Large scale additive machine
    9.
    发明授权
    Large scale additive machine 有权

    公开(公告)号：US11370031B2

    公开(公告)日：2022-06-28

    申请号：US17072163

    申请日：2020-10-16

    Applicant: General Electric Company

    Inventor： MacKenzie Ryan Redding ,  Zachary David Fieldman ,  Justin Mamrak

    IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B23K26/14 ,  B23K15/00 ,  B29C64/153 ,  B33Y40/00 ,  B29C64/371 ,  B23K26/08 ,  B22F12/00 ,  B22F10/00 ,  B22F10/10

    Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

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