ADDITIVE MANUFACTURING WITH CELL PROCESSING RECIPES

    公开(公告)号:WO2018237068A1

    公开(公告)日:2018-12-27

    申请号:PCT/US2018/038588

    申请日:2018-06-20

    摘要: A method of additive manufacturing includes storing a plurality of predetermined cell processing recipes, dispensing a layer of a plurality of successive layers of feed material on a platform, receiving data describing an area of the layer of the feed material to fuse, determining a combination of a plurality of non-overlapping cells that substantially cover the area, and sequentially processing the plurality of cells. Each cell processing recipe includes scan path data indicating a path for an energy beam to follow, and different cell processing recipes having different paths for the energy beam. Each cell of the plurality of cells gets an associated cell processing recipe selected from the plurality of predetermined cell processing recipes. Each cell is processed by causing an energy beam to follow the first path for the cell processing recipe associated with the cell.

    ADDITIVE MANUFACTURING WITH MULTIPLE MIRROR SCANNERS

    公开(公告)号:WO2018237049A1

    公开(公告)日:2018-12-27

    申请号:PCT/US2018/038565

    申请日:2018-06-20

    摘要: An additive manufacturing apparatus includes a platform, a dispenser to deliver a plurality of successive layers of feed material on the platform, a light source to generate one or more light beams, a first galvo mirror scanner positioned to direct a first light beam onto a topmost layer of the plurality of successive layers, a second galvo mirror scanner positioned to direct a second light beam onto the topmost layer of the plurality of successive layers, and a controller configured to cause the first galvo mirror scanner to direct the first light beam to pre-heat or heat-treat an area of the topmost layer and to cause the second galvo mirror scanner to direct the second light beam to fuse the area of the topmost layer.

    ADDITIVE MANUFACTURING WITH A TWO-PART POLYGON SCANNER

    公开(公告)号:WO2019104167A3

    公开(公告)日:2019-05-31

    申请号:PCT/US2018/062245

    申请日:2018-11-21

    摘要: An additive manufacturing apparatus includes a platform, a dispenser to deliver a plurality of successive layers of feed material onto the platform, a light source to generate a light beam, a first polygon mirror scanner to reflect the light beam towards the platform, and a second polygon mirror scanner to reflect the light beam towards the platform. The light beam is alternately directed to the first polygon mirror scanner and the second polygon mirror scanner such that the light beam is directed to the first polygon mirror scanner during a dead time of the second polygon mirror scanner and the light beam is directed to the second polygon mirror scanner during a dead time of the first polygon mirror scanner.

    ULTRASONIC MONITORING OF ADDITIVE MANUFACTURING

    公开(公告)号:WO2020102083A4

    公开(公告)日:2020-05-22

    申请号:PCT/US2019/060739

    申请日:2019-11-11

    摘要: An additive manufacturing apparatus includes a platform having a top surface to support a part being constructed, a dispenser configured to deliver a plurality of successive layers of feed material onto the platform, at least one energy source to selectively fuse feed material in a layer on the platform, and an in-situ monitoring system comprising a plurality of ultrasonic sensors acoustically coupled to the platform and configured to transmit ultrasonic energy through the platform to the part being constructed on the platform and receive reflections of the ultrasonic energy through the platform from the part.

    ULTRASONIC MONITORING OF ADDITIVE MANUFACTURING

    公开(公告)号:WO2020102083A1

    公开(公告)日:2020-05-22

    申请号:PCT/US2019/060739

    申请日:2019-11-11

    摘要: An additive manufacturing apparatus includes a platform having a top surface to support a part being constructed, a dispenser configured to deliver a plurality of successive layers of feed material onto the platform, at least one energy source to selectively fuse feed material in a layer on the platform, and an in-situ monitoring system comprising a plurality of ultrasonic sensors acoustically coupled to the platform and configured to transmit ultrasonic energy through the platform to the part being constructed on the platform and receive reflections of the ultrasonic energy through the platform from the part.

    TREATMENT OF SOLIDIFIED LAYER
    9.
    发明申请

    公开(公告)号:WO2018237171A1

    公开(公告)日:2018-12-27

    申请号:PCT/US2018/038802

    申请日:2018-06-21

    IPC分类号: B22F3/105 B33Y50/00 B33Y30/00

    摘要: An additive manufacturing apparatus and methods relating to forming multiple layers on an object on a support including dispensing a layer of feed material over the support, fusing a portion of the layer of feed material to form a fused portion in the layer, determining to rework a particular region in the fused portion, and reworking the particular region. Reworking the particular region includes establishing a gas flow directed towards the particular region and producing a melt pool having a keyhole within the particular region.