Hewlett-Packard Development Company, L.p.

Other

Jordi Sanroma Garrit

Manuel Freire Garcia

Enrique Gurdiel Gonzalez

Victor Diego Gutierrez

Sergio Gonzalez Martin

Scott White

Sergio Puigardeu Aramendia

Jordi Roca Vila

Jordi Gonzalez Rogel

Virginia Palacios Camarero

Quim Muntal Diaz

Jordi Raventos Catasus

In an example, a method includes receiving, by at least one processor, object model data describing a geometry of at least part of at least one object to be generated using additive manufacturing. The object model data defines a first geometrical transformation to be applied to the object model data. It may be determined if a second geometrical transformation is to be applied to the object model data. If a second geometrical transformation is to be applied, the first and second geometrical transformations may be applied to the object model data to determine modified object model data. Otherwise, the first geometrical transformation may be applied to the object geometry to determine modified object model data.

Geometrical transformations in additive manufacturing

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.

Geometrical compensations for additive manufacturing

In an example a tangible machine-readable medium stores instructions which, when executed by a processor, cause the processor to determine an object generation arrangement for additive manufacturing based on a separation distance between objects, wherein the separation distance varies based on an intended location of object generation.

Separation of objects for additive manufacturing

In an example, a machine-readable medium stores instructions which, when executed by a processor may cause the processor to modify data for characterising geometrical modifications for use by each of a plurality of additive manufacturing apparatus, wherein a modification for a particular additive manufacturing apparatus is based on dimensions of objects generated by that apparatus.

Geometrical compensation models

Certain examples described herein relate to a removable unit for a three dimensional printing system. The removable unit comprises at least one compartment to store build material for a three-dimensional print job, a coupling to engage with a printer device of the three-dimensional printing system, and a memory. The memory is configured to store instructions for the three-dimensional print job for the printer device, and the instructions are readable from the memory by the printer device when the removable unit is engaged with the printer device.

Three-dimensional printing system

In an example implementation, a method of submitting 3D object models to a 3D printing system includes receiving a digital object model as a triangle mesh, and integerizing floating-point X, Y, Z, coordinate values of triangle vertices that define triangles of the triangle mesh. The method includes storing the digital object model in a 3D print file as an integerized triangle mesh comprising the integerized X, Y, Z, coordinate values, and then submitting the 3D print file with the integerized triangle mesh to the 3D printing system to produce the 3D object.

Submitting 3D object models for 3D printing having stored digital model in a 3D print file as an integerized triangle mesh

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. 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.

Dimensional compensations for additive manufacturing

A method of adjusting a three-dimensional representation of an object to be manufactured in an additive manufacturing process comprises determining a processing operation to be applied to the object, and adjusting the three-dimensional representation of the object based on adjustment parameters associated with the processing operation.

Processing an object representation

In an example, a method includes generating a training dataset for an inference model to generate dimensional modifications to apply to object models to compensate for departures from model dimensions in objects generated using additive manufacturing based on those object models. Generating the training dataset may include acquiring, for each of a plurality of generated objects, (i) an indication of a first dimensional inaccuracy and a second dimensional inaccuracy, wherein the first and second dimensional inaccuracies are acquired in a direction of a first axis and relate to respective first and second object dimensions; and (ii) an indication of object placement within a fabrication chamber during object generation.

Object model dimension compensation for additive manufacturing

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.

In one implementation, a system for using a physical document for navigation includes a receiver engine to receive an identifier location corresponding to an area selected on the physical document, a location engine to determine a location within a digital representation of the physical document corresponding to the identifier location, and a display engine to display information relating to the identifier location based on the identifier location and the corresponding location within the digital representation of the physical document.

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Sant Cugat del Valles, Spain

Jordi Sanroma Garrit