US 12,013,683 B2Granted

Geometrical compensations for additive manufacturing

AssigneeHewlett-Packard Development Company, L.P.

InventorsVictor Diego Gutierrez, Jordi Sanroma Garrit, Manuel Freire Garcia, Enrique Gurdiel Gonzalez

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Abstract

In an example, a method includes receiving, 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, wherein the object model data comprises a mesh model comprising data describing a surface of the object. A geometrical compensation vector may be determined for the object model data, the geometrical compensation vector having a first component applying to a first axis of the fabrication chamber and a second component applying to a second axis of the fabrication chamber. A geometrical compensation to apply to at least one location on the surface of the object may be determined by determining a product of the geometrical compensation vector and a vector indicative of the normal of the object surface at the location and the determined geometrical compensation may be applied to the object model data to generate modified object model data.

Claims20

Dependent claims

A method comprising:

receiving, by a processor, object model data representing an object to be generated by an additive manufacturing apparatus by selectively fusing build material within a fabrication chamber, the object model data comprising a mesh model including data describing a first and second planar faces of the object;
determining, by the processor, a geometrical compensation vector for the object model data, the geometrical compensation vector having components for respective orthogonal axes of the fabrication chamber;
determining, by the processor, a first geometrical compensation for the first planar face as a product of the geometrical compensation vector and a first normal vector of the first planar face;
determining, by the processor, a second geometrical compensation for the second planar face as a product of the geometrical compensation vector and a second normal factor of the second planar face;
generating by the processor, modified object model data, including:
applying the first geometrical compensation to one or more locations on the first planar face;
applying the second geometrical compensation to one or more locations on the second planar face;
and
causing, by the processor, the additive manufacturing apparatus to generate the object in accordance with the modified object model data.

6 more elements

A non-transitory computer-readable data storage medium storing program code executable by a processor to perform processing comprising:

receiving object model data representing an object to be generated by an additive manufacturing apparatus by selectively fusing build material within a fabrication chamber, the object model data comprising a mesh model including data describing a first and second planar faces of the object;
determining a geometrical compensation vector for the object model data, the geometrical compensation vector having components for respective orthogonal axes of the fabrication chamber;
determining a first geometrical compensation for the first planar face as a product of the geometrical compensation vector and a first normal vector of the first planar face;
determining a second geometrical compensation for the second planar face as a product of the geometrical compensation vector and a second normal factor of the second planar face;
generating modified object model data, including:
applying the first geometrical compensation to one or more locations on the first planar face;
applying the second geometrical compensation to one or more locations on the second planar face;
and
causing the additive manufacturing apparatus to generate the object in accordance with the modified object model data.

6 more elements

A system comprising:

a processor;
and
a memory storing program code executable by the processor to perform processing comprising:
receiving object model data representing an object to be generated by an additive manufacturing apparatus by selectively fusing build material within a fabrication chamber, the object model data comprising a mesh model including data describing a first and second planar faces of the object;
determining a geometrical compensation vector for the object model data, the geometrical compensation vector having components for respective orthogonal axes of the fabrication chamber;
determining a first geometrical compensation for the first planar face as a product of the geometrical compensation vector and a first normal vector of the first planar face;
determining a second geometrical compensation for the second planar face as a product of the geometrical compensation vector and a second normal factor of the second planar face;
generating modified object model data, including:
applying the first geometrical compensation to one or more locations on the first planar face;
applying the second geometrical compensation to one or more locations on the second planar face;
and
causing the additive manufacturing apparatus to generate the object in accordance with the modified object model data.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/267,389Filed 31 Jan 2019
Published: US 2021/0349440 A111 Nov 2021
Granted: 18 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

G05B 19/4099
Characterised by using design data to control NC machines, e.g. CAD/CAM: surface or curve machining, making three-dimensional [3D] objects, e.g.…
G06F 30/17
Geometric CAD: mechanical parametric or variational design
B22F 10/80
Additive manufacturing of workpieces or articles from metallic powder: data acquisition or data processing
B29C 64/386
Auxiliary operations or equipment: data acquisition or data processing for additive manufacturing