SCATTER REDUCTION IN ADDITIVE MANUFACTURING

    公开(公告)号:US20210170517A1

    公开(公告)日:2021-06-10

    申请号:US17125796

    申请日:2020-12-17

    Abstract: Systems and methods for reducing charged powder particle scattering in powder-bed fusion (PBF) systems are provided. A PBF apparatus can include a structure that supports a layer of powder material having a plurality of particles of powder. For example, the structure can be a build plate, a build floor, a build piece, etc. The apparatus can also include an energy beam source that generates an energy beam and a deflector that applies the energy beam to fuse an area of the powder material in the layer. The energy beam can electrically charge the particles of powder. The apparatus can also include an electrical system that generates an electrical force between the structure and the charged particles of powder. For example, the electrical system can include a voltage source that applies a first voltage to the structure.

    INTEGRATED WHEEL ASSEMBLIES USING MOTOR AND SPEED REDUCER

    公开(公告)号:US20190168620A1

    公开(公告)日:2019-06-06

    申请号:US15829838

    申请日:2017-12-01

    Abstract: Wheel assembles using integrated motors and speed reducers for electric vehicles are disclosed for providing improved structural efficiency. A wheel assembly may include a motor for providing power to a wheel, a leading or trailing type or similar suspension link, a caliper mounted to the suspension link and configured to engage a friction brake rotor on the wheel, and a synchronous belt mounted off-axis for implementing speed reducing. In certain embodiments, the respective components of the wheel assembly are nested to fit into a minimal volume. In other embodiments, the wheel assembly includes a motor that is not nested and that is configured to supply power to the wheel via a belt and pulley system.

    SCATTER REDUCTION IN ADDITIVE MANUFACTURING
    18.
    发明申请

    公开(公告)号:US20180311758A1

    公开(公告)日:2018-11-01

    申请号:US15582493

    申请日:2017-04-28

    Abstract: Systems and methods for reducing charged powder particle scattering in powder-bed fusion (PBF) systems are provided. A PBF apparatus can include a structure that supports a layer of powder material having a plurality of particles of powder. For example, the structure can be a build plate, a build floor, a build piece, etc. The apparatus can also include an energy beam source that generates an energy beam and a deflector that applies the energy beam to fuse an area of the powder material in the layer. The energy beam can electrically charge the particles of powder. The apparatus can also include an electrical system that generates an electrical force between the structure and the charged particles of powder. For example, the electrical system can include a voltage source that applies a first voltage to the structure.

    ADDITIVE MANUFACTURING CONTROL SYSTEMS
    19.
    发明申请

    公开(公告)号:US20180311757A1

    公开(公告)日:2018-11-01

    申请号:US15582457

    申请日:2017-04-28

    Abstract: Systems and methods for control in additive manufacturing systems are provided. A powder-bed fusion apparatus can include an energy beam source that generates an energy beam and a deflector that applies the energy beam to fuse powder material to create a 3-D object based on an object model. The system can also include a characterizer that obtains information relating to fusing the powder material. The characterizer can be a sensor that measures the shape of the object, a processor that determines a physics-based model of the object, etc. The system can also include a comparator that determines a variation from the object model based on the information, and a compensator that modifies the application of energy to the powder material based on the variation. For example, applied energy can be increased in areas that require higher energy to completely fuse powder material, such areas of thicker powder layer.

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