Back to results
US 11,884,021 B2Granted
Modifying object geometries based on radiant heating distribution
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid Ramirez Muela, Manuel Freire Garcia
Life of this patent
Estimating the term…
Abstract
In an example, object model data representing at least a portion of an object defining an initial object geometry is received, wherein the object is to be generated by an additive manufacturing apparatus by fusing build material using a radiant heater. Based on a non-uniform radiant heating distribution of the additive manufacturing apparatus, a modified object geometry may be determined, wherein a local modification of the object geometry is determined based on a local radiant heating parameter determined from the non-uniform radiant heating distribution.
Claims11
A method comprising:
- receiving, by a processor, object model data representing a portion of an object defining an initial object geometry, wherein the object is to be generated within a fabrication chamber by an additive manufacturing apparatus by fusing build material using a radiant heater;
- determining, by the processor, a non-uniform radiant heating distribution of the additive manufacturing apparatus by using a temperature sensor to monitor a temperature distribution of a heated calibration layer of build material applied within a build chamber of the additive manufacturing apparatus, and by comparing the monitored temperature distribution of the heated calibration layer of the build material to a baseline temperature distribution corresponding to uniform heating by the radiant heater;
- determining, by the processor, a first local radiant heating parameter from the non-uniform radiant heating distribution of the additive manufacturing apparatus for a first location in the fabrication chamber, and determining a second local radiant heating parameter from the non-uniform radiant heating distribution for a second location in the fabrication chamber;
- eroding or dilating, by the processor, an object model corresponding to the object model data by removing or adding a plurality of sub-volumes of a predetermined size from or to at least one outer surface of the object model;
- determining, by the processor, object generation instructions for generating the object in accordance with the eroded or dilated object model, the object generation instructions specifying an amount of print agent to be applied to each of a plurality of locations on a layer of build material;
- and
- causing, by the processor, the additive manufacturing apparatus to physically generate the object in accordance with the determined object generation instructions,
- wherein a number of sub-volumes eroded or added proximate the first location in the fabrication chamber when the object is generated within the fabrication chamber in accordance with the eroded or dilated object model is based on the first local radiant heating parameter,
- and wherein a number of sub-volumes eroded or added proximate the second location when the object is generated within the fabrication chamber in accordance with the eroded or dilated object model is based on the second local radiant heating parameter.
6 more elements
A system comprising:
- a processor;
- and
- a memory storing instructions executable by the processor to:
- receive object model data representing a portion of an object to be generated within a fabrication chamber by an additive manufacturing apparatus using a radiant heater;
- determine a non-uniform radiant heating distribution of the additive manufacturing apparatus by using a temperature sensor to monitor a temperature distribution of a heated calibration layer of build material applied within a build chamber of the additive manufacturing apparatus, and by comparing the monitored temperature distribution of the heated calibration layer of the build material to a baseline temperature distribution corresponding to uniform heating by the radiant heater;
- determine a first local radiant heating parameter from the non-uniform radiant heating distribution of the additive manufacturing apparatus for a first location in the fabrication chamber, and determine a second local radiant heating parameter from the non-uniform radiant heating distribution for a second location in the fabrication chamber;
- erode or dilate an object model corresponding to the object model data by removing or adding a plurality of sub-volumes of a predetermined size from or to at least one outer surface of the object model;
- determine object generation instructions for generating the object in accordance with the eroded or dilated object model, the object generation instructions specifying an amount of print agent to be applied to each of a plurality of locations on a layer of build material;
- and
- cause the additive manufacturing apparatus to physically generate the object in accordance with the determined object generation instructions,
- wherein a number of sub-volumes eroded or added proximate the first location in the fabrication chamber when the object is generated within the fabrication chamber in accordance with the eroded or dilated object model is based on the first local radiant heating parameter,
- and wherein a number of sub-volumes eroded or added proximate the second location when the object is generated within the fabrication chamber in accordance with the eroded or dilated object model is based on the second local radiant heating parameter.
9 more elements
A non-transitory machine readable medium storing instructions which, when executed by a processor, cause the processor to:
- receive object model data representing a portion of an object to be generated within a fabrication chamber by an additive manufacturing apparatus using a radiant heater;
- determine a non-uniform radiant heating distribution of the additive manufacturing apparatus by using a temperature sensor to monitor a temperature distribution of a heated calibration layer of build material applied within a build chamber of the additive manufacturing apparatus, and by comparing the monitored temperature distribution of the heated calibration layer of the build material to a baseline temperature distribution corresponding to uniform heating by the radiant heater;
- determine a first local radiant heating parameter from the non-uniform radiant heating distribution of the additive manufacturing apparatus for a first location in the fabrication chamber, and determine a second local radiant heating parameter from the non-uniform radiant heating distribution for a second location in the fabrication chamber;
- erode or dilate an object model corresponding to the object model data by removing or adding a plurality of sub-volumes of a predetermined size from or to at least one outer surface of the object model;
- determine object generation instructions for generating the object in accordance with the eroded or dilated object model, the object generation instructions specifying an amount of print agent to be applied to each of a plurality of locations on a layer of build material;
- and
- cause the additive manufacturing apparatus to physically generate the object in accordance with the determined object generation instructions,
- wherein a number of sub-volumes eroded or added proximate the first location in the fabrication chamber when the object is generated within the fabrication chamber in accordance with the eroded or dilated object model is based on the first local radiant heating parameter,
- and wherein a number of sub-volumes eroded or added proximate the second location when the object is generated within the fabrication chamber in accordance with the eroded or dilated object model is based on the second local radiant heating parameter.
6 more elements
Dependencies are inferred from the claim text.