公开(公告)号：US20210206060A1

公开(公告)日：2021-07-08

申请号：US16089512

申请日：2017-04-11

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Luis GARCIA ,  Alejandro Manuel DE PENA ,  Alejandro BONILLO

IPC: B29C64/165 ,  B29C64/393 ,  B29C64/245

Abstract: An additive manufacturing system is described. The system includes a working area with a moveable platform, a supply mechanism to supply a build material to the working area, a radiation source to apply energy to the working area during construction of an object, so as to fuse at least a portion of the build material, a platform advance sensor to determine a displacement of the platform in at least a direction perpendicular to the plane of the platform, and a radiation source controller to adjust the energy applied by the radiation source based on the displacement measured by the platform advance sensor.

公开(公告)号：US20210197479A1

公开(公告)日：2021-07-01

申请号：US16075677

申请日：2017-03-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Pol FORNOS ,  Luis GARCIA ,  Jun ZENG

IPC: B29C64/386 ,  B33Y50/00 ,  G05B19/042

Abstract: In an example, a method includes receiving, at a processor, object model data representing at least a portion of an object to be generated by an additive manufacturing apparatus by fusing build material. Using a processor and from the object model data, a property diffusion model for the object in object generation may be determined. Using a processor and based on the property diffusion model, a manufacturing boundary object shell around the object and encompassing an external volume may be determined. The shell may have a variable thickness determined so as to include build material for which, in generation of the object, the property modelled in the property diffusion model has a value which is predicted to conform to a predetermined parameter.