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    Supports for sintering additively manufactured parts
    71.
    发明授权
    Supports for sintering additively manufactured parts 有权

    公开(公告)号：US11173550B2

    公开(公告)日：2021-11-16

    申请号：US16550979

    申请日：2019-08-26

    Applicant: MARKFORGED, INC.

    Inventor： Gregory Thomas Mark

    IPC: B22F10/40 ,  B29C64/245 ,  B33Y10/00 ,  B29C64/40 ,  B29C64/165 ,  B22F10/10 ,  B22F10/43 ,  B22F10/64 ,  B29C64/141 ,  B29K25/00 ,  B29C70/16 ,  B29C64/118 ,  B29C64/209 ,  B29K79/00 ,  B29C64/295 ,  B29C31/04 ,  B22F3/11 ,  B33Y70/10

    Abstract: According to one aspect, embodiments herein provide a method of reducing distortion in an additively manufactured part comprising forming a shrinking platform from a composite including metal particles embedded in a first matrix, forming shrinking supports from the composite, forming a part from the composite upon the shrinking platform and shrinking supports, forming an interior structure in at least one of the shrinking platform, the shrinking supports, and the part having a plurality of chambers with interconnections therebetween, forming from the shrinking platform, the sintering supports, and the part a portable assembly, and debinding the first matrix in the portable assembly to form a portable assembly in a brown state, wherein debinding the first matrix includes penetrating a fluid debinder into the interior structure of the at least one of the shrinking platform, the shrinking supports, and the part to debind the first matrix from within the interior structure.

    MANUFACTURING OPTIMIZATION USING A MULTI-TENANT MACHINE LEARNING PLATFORM
    72.
    发明申请
    MANUFACTURING OPTIMIZATION USING A MULTI-TENANT MACHINE LEARNING PLATFORM 审中-公开

    公开(公告)号：US20200371509A1

    公开(公告)日：2020-11-26

    申请号：US16883487

    申请日：2020-05-26

    Applicant: MARKFORGED, INC.

    Inventor： Gregory Thomas Mark

    IPC: G05B19/418 ,  G05B19/4155 ,  G06N20/20

    Abstract: Techniques for manufacturing optimization using a multi-tenant machine learning platform are disclosed. A method for manufacturing optimization includes: obtaining physical sensor data, by a manufacturing device associated with a tenant of a multi-tenant machine learning platform; determining, by a machine learning spoke system associated with the tenant, a machine learning parameter based on at least the physical sensor data; preventing exposure of the first physical sensor data of the first manufacturing device to any other tenant of the multi-tenant machine learning platform; transmitting the machine learning parameter from the machine learning spoke system to a machine learning hub system of the multi-tenant machine learning platform; and updating, by the machine learning hub system, a multi-tenant machine learning model based at least on the machine learning parameter.

    Three dimensional printing
    73.
    发明授权
    Three dimensional printing 有权

    公开(公告)号：US10717228B2

    公开(公告)日：2020-07-21

    申请号：US16031564

    申请日：2018-07-10

    Applicant: MARKFORGED, INC.

    Inventor： Gregory Thomas Mark ,  Antoni S. Gozdz

    IPC: B29C64/106 ,  B29C70/20 ,  B29C64/393 ,  B29K77/00 ,  B29K307/04

    Abstract: Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to drag the filament from the conduit nozzle.

    THREE DIMENSIONAL PRINTING
    76.
    发明申请
    THREE DIMENSIONAL PRINTING 审中-公开

    公开(公告)号：US20190105831A1

    公开(公告)日：2019-04-11

    申请号：US16031564

    申请日：2018-07-10

    Applicant: MARKFORGED, INC.

    Inventor： Gregory Thomas Mark ,  Antoni S. Gozdz

    IPC: B29C64/106 ,  B29C70/20 ,  B29C64/393

    Abstract: Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to drag the filament from the conduit nozzle.

    3D PRINTING INTERNAL FREE SPACE
    77.
    发明申请
    3D PRINTING INTERNAL FREE SPACE 审中-公开

    公开(公告)号：US20190047047A1

    公开(公告)日：2019-02-14

    申请号：US16165291

    申请日：2018-10-19

    Applicant: MARKFORGED, INC.

    Inventor： Gregory Thomas Mark

    IPC: B22F3/00 ,  B22F1/00 ,  B33Y70/00 ,  B22F3/10 ,  B33Y10/00

    Abstract: For 3D printing green parts to be debound and sintered, a binder may be jetted into successive layers of sinterable powder feedstock to build up a 3D shape of a desired 3D green part, associated sintering supports, and an associated shrinking platform. A release material may be deposited to intervene between the 3D green parts and the sintering supports. A placeholder material may be deposited upon bound powder to form 2D layer shapes of placeholder material, and the sinterable powder feedstock refilled and leveled about the placeholder material. Upon debinding, internal cavities corresponding to the 3D shapes of the placeholder material are formed.

    SINTERING ADDITIVELY MANUFACTURED PARTS IN MICROWAVE OVEN
    78.
    发明申请
    SINTERING ADDITIVELY MANUFACTURED PARTS IN MICROWAVE OVEN 审中-公开

    公开(公告)号：US20190030601A1

    公开(公告)日：2019-01-31

    申请号：US15961372

    申请日：2018-04-24

    Applicant: MARKFORGED, INC.

    Inventor： Gregory Thomas Mark

    IPC: B22F3/00 ,  B33Y70/00 ,  B22F1/00 ,  B33Y10/00 ,  B22F3/10

    Abstract: A method comprising supplying a first material containing a removable binder and greater than 50% volume fraction of a powdered metal having a melting point greater than 1200 degrees C., in which more than 50% of powder particles of the powdered metal have a diameter less than 10 microns, additively depositing the first material in successive layers to form a green body, removing the binder to form a brown body, loading the brown part into a fused tube formed from a second material having an operating temperature less than substantially 1200 degrees C., a thermal expansion coefficient lower than 1×10-6/° C., and a microwave field penetration depth of 10 m or higher, sealing the fused tube and replacing internal air with a sintering atmosphere, applying microwave energy from outside the sealed fused tube to the brown part, and sintering the brown part at a temperature lower than 1200 degrees C.

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