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公开(公告)号：US20230024633A1
公开(公告)日：2023-01-26
申请号：US17757789
申请日：2020-01-22
IPC分类号： B29C64/386 , B33Y50/02 , G05B19/4099
摘要： In an example, a method includes acquiring, by a processor and for a set of locations in a fabrication chamber for additive manufacturing, data identifying a first subset of locations associated with a first level of variability in deformations in object generation and a second subset of locations associated with a second, greater, level of variability in deformations object generation. A geometrical compensation model may be derived to compensate for anticipated deformations in object generation by a first additive manufacturing apparatus. The geometrical compensation model may comprise geometrical transformations to apply to object model data representing at least a portion of an object, wherein each geometrical transformation is associated with a location of the set of locations. The first subset of locations may be associated with geometrical transformations determined based objects generated by a plurality of additive manufacturing apparatus and the second subset of locations may be associated with geometrical transformations determined based on objects generated by the first additive manufacturing apparatus.
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公开(公告)号：US20220347925A1
公开(公告)日：2022-11-03
申请号：US17621078
申请日：2019-07-15
发明人： 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分类号： B29C64/386 , B33Y50/00 , B22F10/80 , G05B19/4093
摘要： 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.
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公开(公告)号：US20210339476A1
公开(公告)日：2021-11-04
申请号：US15734578
申请日：2019-01-23
IPC分类号： B29C64/393 , B29C64/153 , B29C64/209 , G06F30/20
摘要： Example implementations relate to compensating for shrinkage in 3D printing. One example implementation receives an object model to print a corresponding object in a three-dimensional (3D) printer, the object model having a plurality of surface coordinates. A plurality of dimensional modification compensation factors are determined dependent on respective locations within a printing volume of the 3D printer. The object model is adjusted at the plurality of surface coordinates using respective dimensional modification compensation factors depending on the location of the surface coordinates within the printing volume in order to generate a printable object model.
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公开(公告)号：US20210176378A1
公开(公告)日：2021-06-10
申请号：US16763763
申请日：2017-12-14
摘要： Certain examples described herein relate to generating a Neugebauer Primary area coverage (NPac) vector. In certain cases, an operating state of a printing system is determined. A first NPac vector is obtained, having an initial set of Neugebauer Primaries (NPs). The initial set of NPs comprise a NP that is not implementable with the operating state. A target set of NPs is determined on the basis of the operating state, the target set of NPs being implementable with the operating state. A second NPac vector is generated, the second NPac vector having the target set of NPs.
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公开(公告)号：US20230040621A1
公开(公告)日：2023-02-09
申请号：US17904752
申请日：2020-03-30
IPC分类号： B29C64/386 , B33Y50/00 , G05B19/4099
摘要： An example method includes obtaining a geometric compensation profile characterising a relationship between a location of an object within a first fabrication volume having a first depth of build material and a geometrical compensation to be applied to a model of said object. The method further includes determining that a first object is to be generated in a first build operation having a second fabrication volume which has a second depth. The method may further include determining a geometrical compensation to be applied to a model of the first object by: determining a first offset of the first object from the top of the second fabrication volume; identifying the geometrical compensation value associated with a location having the first offset from the top of the first fabrication volume; and determining the compensation to be applied to the model of the first object based on the identified geometrical compensation value.
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公开(公告)号：US11057545B2
公开(公告)日：2021-07-06
申请号：US16978328
申请日：2018-04-30
发明人： Peter Morovic , Jan Morovic , Victor Diego Gutierrez , Alex Campa Coloma , Javier Maestro Garcia
摘要： In an example a method includes deriving a print agent coverage vector specifying an area coverage for each of a plurality of elements, wherein each element is associated with a print agent, a print agent combination or an absence of print agent. Deriving the print agent coverage vector comprises, for a first element of the print agent coverage vector, applying a first weighting function which varies based on an intended area color value.
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公开(公告)号：US11057543B2
公开(公告)日：2021-07-06
申请号：US16977662
申请日：2018-03-12
摘要： Certain examples described herein relate to updating a lookup table for an imaging system. An initial lookup table for an imaging system is obtained, the initial lookup table mapping between a first color space and a second color space. A smoothed version of the initial lookup table is also obtained. Further obtained are color property values corresponding to nodes of the lookup tables that map from a vertex-to-vertex axis of the first color space. The color property values are derived from measurements of test areas rendered by the imaging system. For a target node of the smoothed version of the initial lookup table that maps from the vertex-to-vertex axis, a pair of nodes in the initial lookup table are selected based on the obtained color property values. A mapped value in the second color space for the target node is updated, based on an interpolation of mapped values for the pair of nodes in the initial lookup table. The mapped value for the target node is constrained based on a color property value for the target node.
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公开(公告)号：US10974458B2
公开(公告)日：2021-04-13
申请号：US16246046
申请日：2019-01-11
发明人： Jordi Sanroma Garrit , Enrique Gurdiel Gonzalez , Victor Diego Gutierrez , Manuel Freire Garcia
IPC分类号： B29C64/393 , G06F30/00 , B33Y30/00 , B33Y50/02 , B33Y10/00
摘要： In an example, a method includes receiving, at at least one processor, object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. An intended object placement location within the fabrication chamber may be determined, and a dimensional compensation to apply to the object model data may be determined using a mapping resource relating dimensional compensations to object placement locations. The determined dimensional compensation may be applied to the object model data to generate modified object model data using at least one processor.
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公开(公告)号：US12076931B2
公开(公告)日：2024-09-03
申请号：US17417952
申请日：2019-04-30
IPC分类号： B29C64/393 , B22F10/80 , B33Y10/00 , B33Y30/00 , B33Y50/00 , B33Y50/02 , B22F10/14 , B22F10/28 , B29C64/165 , B29C64/386
CPC分类号： B29C64/393 , B22F10/80 , B33Y10/00 , B33Y30/00 , B33Y50/00 , B33Y50/02 , B22F10/14 , B22F10/28
摘要： In an example, a method includes receiving, by at least one processor, object model data representing at least a portion of a first object that is to be generated by an additive manufacturing apparatus. An indication of a proportion of the first object which is solid may be determined, and, based thereon, a dimensional compensation value may be determined. The determined dimensional compensation value may be applied to the object model data to determine modified object model data.
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公开(公告)号：US20230339188A1
公开(公告)日：2023-10-26
申请号：US18217934
申请日：2023-07-03
IPC分类号： B22F10/80 , B22F10/28 , B29C64/386 , G05B19/4099 , B22F12/82 , B33Y50/00
CPC分类号： B29C64/386 , B22F10/28 , B22F10/80 , B22F12/82 , B33Y50/00 , G05B19/4099 , B29C64/165
摘要： In an example, a method includes receiving, at at least one processor, object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. At least one of a plurality of different geometrical compensation models to be applied to the object model data may be selected wherein the geometrical compensation models are to determine geometrical compensations to compensate for object deformation in additive manufacturing. An object generation operation based on a modification of the object model data using the or each selected geometrical compensation mode may be simulated and predicted attributes of the object when generated based on the or each simulation may be displayed. FIG. 1
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