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    Selection of powder control temperature regions in 3D printing
    11.
    发明授权
    Selection of powder control temperature regions in 3D printing 有权

    公开(公告)号：US11426943B2

    公开(公告)日：2022-08-30

    申请号：US16472929

    申请日：2017-04-19

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Sunil Kothari ,  Tod Heiles ,  Juan Carlos Salazar ,  Goffril Obegi ,  Jun Zeng ,  Gary J. Dispoto

    IPC: B29C64/393 ,  B29C64/165 ,  B29C64/295 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: A control and feedback technique to determine the proper location of powder control temperature regions includes detecting solid parts having specified shape and thermal characteristics. The solid parts are generated by a 3D printer. The solid parts include powder material fused on a layer by layer basis. A powder control temperature region is selected in each layer of powder material, wherein the region is located in unfused powder material adjacent to the solid parts, and wherein the region is selected based on characteristics of the shape of a build area and thermal imaging associated with any of a structural formation of the solid parts adjacent to the region, and an amount of thermal energy radiated by the solid parts adjacent to the region. The amount of thermal energy to cause fusing of the powder material on each subsequent layer is modified based on location of the powder control temperature region.

    MOTION CORRECTION IN ADDITIVE MANUFACTURING
    13.
    发明申请
    MOTION CORRECTION IN ADDITIVE MANUFACTURING 审中-公开

    公开(公告)号：US20200247110A1

    公开(公告)日：2020-08-06

    申请号：US16753267

    申请日：2018-01-18

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Tod Heiles ,  Sunil Kothari ,  Juan Carlos Catana ,  Brent Ewald ,  Jun Zeng ,  Gary J. Dispoto

    IPC: B33Y10/00 ,  B33Y30/00

    Abstract: A system for forming an object, the system including: a carriage, wherein the carriage moves above an area for forming the object and laterally with respect to the area, the carriage comprising an electromagnetic radiation source to induce heating of material in the area; a thermal imaging device to image the area, wherein the thermal imaging device captures a plurality of sequential images; and a processor, wherein the processor uses the plurality of sequential images to create a temperature map of the area which includes compensation for the cooling which occurs during the movement of the carriage lateral to the area.

    Region of interest monitoring and control for additive manufacturing
    18.
    发明授权
    Region of interest monitoring and control for additive manufacturing 有权

    公开(公告)号：US11420395B2

    公开(公告)日：2022-08-23

    申请号：US16606741

    申请日：2018-04-30

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Sunil Kothari ,  Juan Carlos Catana ,  Tod Heiles

    IPC: B29C64/393 ,  G06T7/66 ,  B29C64/112 ,  G06T7/00

    Abstract: In some examples, with respect to region of interest monitoring and control for additive manufacturing, a blob detection analysis may be performed on first and second component images associated with additive manufacturing of a component, and blobs that remain a same shape and include same centroids on the first and second component images may be identified. A further blob detection analysis may be performed on first and second thermal images associated with the first and second component images, and a determination may be made as to whether one of the identified blobs includes a same shape and a different centroid between the first and second thermal images. Based on a determination that the one of the identified blobs includes the same shape and the different centroid, an indication of a thermal camera misalignment associated with the additive manufacturing may be generated.

    Printing production quality prediction
    20.
    发明授权
    Printing production quality prediction 有权

    公开(公告)号：US11376793B2

    公开(公告)日：2022-07-05

    申请号：US16978241

    申请日：2018-04-26

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Sunil Kothari ,  Jun Zeng ,  Gary J. Dispoto ,  Viseth Sean

    IPC: B29C64/386 ,  B33Y50/00 ,  G06N20/00 ,  G06F3/12 ,  H04N1/00 ,  H04N1/12

    Abstract: A system and method for providing three dimensional printing production quality prediction is described herein. The system may include logic to scan a region of interest associated with a layer of a plurality of parts during printing to obtain an input for the region of interest and compute an input metric associated with the layer based on the input. In response to an initial set of print jobs, at least a portion of the plurality of parts is mechanically tested to determine at least one output. In response to a production print job, a likelihood of a part of the plurality of parts to satisfy a quality specification is predicted by inputting the input metric to at least one machine learning function comprising the at least one output, wherein the at least one machine learning function is trained during the initial set of print jobs.

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