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    OFFSET OPERATORS
    1.
    发明申请
    OFFSET OPERATORS 有权

    公开(公告)号：US20220347925A1

    公开(公告)日：2022-11-03

    申请号：US17621078

    申请日：2019-07-15

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

    Inventor： Sergio Gonzalez Martin ,  Alex Carruesco Llorens ,  Jordi Gonzalez Rogel ,  Jordi Sanroma Garrit ,  Victor Diego Gutierrez ,  Enrique Gurdiel Gonzalez ,  Victor Anton Dominguez ,  Antonio Chica Calaf ,  Alvaro Vinacua Pla ,  Cristina Raluca Vijulie

    IPC: B29C64/386 ,  B33Y50/00 ,  B22F10/80 ,  G05B19/4093

    Abstract: In an example, a method includes receiving, at a processor, an object model describing a geometry of a three-dimensional object, and determining a transformed data model describing a volume containing a modified version of the three-dimensional object as a plurality of categorised contiguous, non-overlapping sub-volumes, wherein the modified version of the three-dimensional object includes a surface offset. Determining the transformed data model may comprises categorising the sub-volumes by defining a first region by determining an area swept by an offset operator when the offset operator is swept around a boundary of the sub-volume and defining a second region, interior to the first region, and indicative of the closest approach of the offset operator to the sub-volume when the offset operator is swept around the boundary. Intersections between a surface of the object model and at least one of the first and second region may be determined. When the surface intersects the second region, the sub-volume may be categorised as interior to the three-dimensional object; and when the surface intersects the first region and not the second region, the sub-volume may categorised as spanning a boundary of the three-dimensional object.

    GEOMETRICAL COMPENSATIONS
    2.
    发明申请
    GEOMETRICAL COMPENSATIONS 有权

    公开(公告)号：US20220075347A1

    公开(公告)日：2022-03-10

    申请号：US17418794

    申请日：2019-04-30

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

    Inventor： Enrique Gurdiel Gonzalez ,  Jordi Sanroma Garrit ,  Quim Muntal Diaz

    IPC: G05B19/4099 ,  B33Y50/02 ,  B29C64/393

    Abstract: An example method includes acquiring, by at least one processor, (i) an indication of measured dimensions of objects generated in a common additive manufacturing build operation, wherein the objects include at least one instance of a first object generated based on first object model data and at least one instance of a second object based on second object model data; and (ii) an indication of the orientation of the measured dimensions. Vector components for each of the measured dimensions may be determined based on the indication of the orientation. A first geometrical compensation for use in modifying the first object model data may be determined based on the measured dimensions and the vector components relating to the first object and a second geometrical compensation for use in modifying the second object model data may be determined based on the measured dimensions and the vector components relating to the second object.

    Dimensions in Additive Manufacturing
    10.
    发明申请
    Dimensions in Additive Manufacturing 有权

    公开(公告)号：US20220067225A1

    公开(公告)日：2022-03-03

    申请号：US17418792

    申请日：2019-10-24

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

    Inventor： Victor Diego Gutierrez ,  Manuel Freire Garcia ,  Enrique Gurdiel Gonzalez

    IPC: G06F30/10 ,  B29C64/386 ,  B33Y50/00

    Abstract: An example method includes obtaining, by at least one processor, a plurality of categorised indications of deviations from expected dimensions for at least one object generated using an additive manufacturing apparatus wherein the categories comprise at least two of a first dimension type comprising dimensions which are expected to increase on application of a positive offset to object model data used to generate an object, a second dimension type comprising dimensions which are expected to decrease on application of a positive offset to the object to object model data used to generate an object, and a third dimension type comprising dimensions which are expected to be unaffected by application of an offset to object model data used to generate an object. The method may include determining a geometrical compensation model to apply to object model data for generating objects using additive manufacturing to compensate for anticipated deviations in dimensions.

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