公开(公告)号：US11633909B2

公开(公告)日：2023-04-25

申请号：US17260347

申请日：2019-07-26

申请人： CALT DYNAMICS Limited

发明人： Ross Lawless ,  Irene Villafane ,  Warren Katz

IPC分类号： B29C64/129 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/255 ,  B29C64/393 ,  B29C64/286 ,  B29C64/35 ,  B33Y40/20

摘要： Systems, apparatus, and methods are described for additive manufacturing or three dimensional (3D) printing of objects using a set of physical masks. An additive manufacturing device can include one or more light sources, a vessel containing a volume of print material and a transparent base through which light can enter the vessel to cure a portion of the volume of print material, and a set of masks defining a series of patterns associated with layers of a 3D object that are each positionable between the light source and the transparent base to control a pattern of the light that is received through the transparent base and therefore the pattern of the cured portion of print material.

公开(公告)号：US11534963B2

公开(公告)日：2022-12-27

申请号：US17041483

申请日：2019-03-26

申请人： Freemelt AB

发明人： Ulric Ljungblad

IPC分类号： B29C64/153 ,  B29C64/277 ,  B29C64/286 ,  B29C64/273 ,  B29C64/188 ,  B29C64/30 ,  B33Y40/00 ,  B33Y10/00

摘要： A method for manufacturing a three-dimensional object by solidifying selected areas of consecutive powder layers is provided. At least one electron beam successively irradiates predetermined sections of each powder layer by moving an interaction region in which the electron beam interacts with the powder layer. Electromagnetic radiation from a radiation source is directed onto the powder layer to reduce local electrostatic charging in the interaction region. In this way, levitation and scattering of charged powder will be avoided.

公开(公告)号：US11440257B2

公开(公告)日：2022-09-13

申请号：US16497621

申请日：2017-04-14

申请人： HYVISION SYSTEM INC.

发明人： Doo Won Choi ,  Jun Seok Seo

IPC分类号： B29C64/268 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B29C64/20 ,  B29C64/393 ,  B23K26/08 ,  B23K26/082 ,  B23K103/00 ,  B29C64/277 ,  B29C64/282 ,  B29C64/286

摘要： The present invention relates to a three-dimensional printing apparatus using a digital light processing (DLP) projector with a laser scanner, the apparatus comprising: a resin storage unit storing a photocurable resin; a DLP projector unit projecting light to the resin storage unit; a molding stage unit provided to be capable of being lifted and lowered in a vertical direction from a bottom of the resin storage unit; a laser scanner unit performing scanning of light for the resin storage unit; a scanner transfer unit allowing the laser scanner unit to move in an x-axis direction; an image processing unit dividing one sectional image of a sculpture into a core portion and a shell portion; and a controller receiving data on the core portion and the shell portion from the image processing unit, controlling the DLP projector, the laser scanner unit, the scanner transfer unit, and the molding stage unit.

公开(公告)号：US20220258418A1

公开(公告)日：2022-08-18

申请号：US17673354

申请日：2022-02-16

申请人： TE Connectivity Germany GmbH

发明人： Josef Sinder ,  Kerstin Brenner ,  Daniel Naumov

IPC分类号： B29C64/182 ,  B29C64/268 ,  B29C64/214 ,  B29C64/245 ,  B29C64/286 ,  B29C64/241 ,  B33Y30/00 ,  B33Y10/00

摘要： An additive manufacturing system includes a plurality of manufacturing stations each performing a manufacturing step, a laser beam coupling device receiving a laser beam as an input beam, and a plurality of beam paths along which a light of the input beam is guided. The beam paths are directed from the laser beam coupling device to the manufacturing stations.

公开(公告)号：US11407174B2

公开(公告)日：2022-08-09

申请号：US16837092

申请日：2020-04-01

申请人： General Electric Company

发明人： Glenn Curtis Taxacher

IPC分类号： B29C64/30 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y80/00 ,  B29C64/286

摘要： A mask is provided for an additively manufactured part including a plurality of openings in a surface of the part. The mask is made with the part and includes an attachment ligament configured to integrally couple to the part adjacent the plurality of openings. A cover member include a proximal end integrally coupled to the attachment ligament and distal end extending at least partially over the plurality of openings. A detachment member may optionally extend from adjacent the cover member. The attachment ligament is the sole connection to the part. The mask may have an L-shape in cross-section.

公开(公告)号：US11358335B2

公开(公告)日：2022-06-14

申请号：US16837089

申请日：2020-04-01

申请人： General Electric Company

发明人： Travis J Packer ,  Brad Wilson VanTassel ,  Christopher Donald Porter ,  Jonathan Matthew Lomas ,  Glenn Curtis Taxacher

IPC分类号： B29C64/30 ,  B33Y30/00 ,  B33Y80/00 ,  B33Y40/00 ,  B29C64/286

摘要： A mask is provided for an additively manufactured part including a plurality of spaced openings in a surface of the part. The mask is made with the part and includes an attachment ligament configured to integrally couple to the part between the openings in a cantilever fashion. First and second cover members include a proximal ends integrally coupled to the attachment ligament and distal ends extending at least partially over a respective portions of the plurality of openings. A detachment member extends from each of the first and second cover members. The attachment ligament is the sole connection to the part. The mask may have an umbrella shape in cross-section.

公开(公告)号：US20220176630A1

公开(公告)日：2022-06-09

申请号：US17114607

申请日：2020-12-08

申请人： PALO ALTO RESEARCH CENTER INCORPORATED

发明人： Patrick Y. Maeda ,  Joanne L. Lee

IPC分类号： B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00 ,  B22D23/00 ,  B29C64/112 ,  B29C64/286 ,  B29C64/393

摘要： Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets deposited on the substrate, an area proximal the substrate, or combinations thereof.

公开(公告)号：US11338508B2

公开(公告)日：2022-05-24

申请号：US16075672

申请日：2017-01-31

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Ning Ge ,  Steven J. Simske ,  Andrew E. Fitzhugh ,  Lihua Zhao

IPC分类号： B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/357 ,  B29C64/371 ,  B29C64/214 ,  B29C64/245 ,  B29C64/286

摘要： According to an example, an apparatus may include an agent delivery device to selectively deliver an agent onto a layer of build material particles. The apparatus may also include an energy source to apply energy onto the layer of build material particles to selectively fuse the build material particles in the layer based upon the locations at which the agent was delivered and a chamber formed of a plurality of walls, in which the agent delivery device and the energy source are housed inside the chamber. The apparatus may further include a vapor source to supply vapor into the chamber to wet the build material particles inside the chamber.

公开(公告)号：US20220152918A1

公开(公告)日：2022-05-19

申请号：US17098485

申请日：2020-11-16

申请人： General Electric Company

发明人： Srikanth Reddy Tenkayyagaari ,  Sharath Sridhar Aramanekoppa ,  Megha Navalgund ,  Steven T. Slusher

IPC分类号： B29C64/153 ,  B29C64/286 ,  B29C64/268 ,  B29C64/393 ,  B29C64/282 ,  B33Y50/02

摘要： An additive manufacturing system may include an additive manufacturing machine and a control system. The additive manufacturing machine may include one or more irradiation devices respectively including a beam source configured to emit an energy beam, an optical assembly that has one or more optical elements configured to focus the energy beam emitted by the beam source, a beam source sensor configured to determine a beam source sensor value from a source measurement beam representative of the energy beam prior to the energy beam passing through one or more optical elements of the optical assembly, and an optics sensor configured to determine an optics sensor value from an optics measurement beam representative of the energy beam downstream from the one or more optical elements of the optical assembly. The control system may include an irradiation control module configured to provide one or more control commands to the additive manufacturing machine based at least in part on the beam source sensor value and/or based at least in part on the optics sensor value.

公开(公告)号：US11325299B2

公开(公告)日：2022-05-10

申请号：US16513700

申请日：2019-07-16

申请人： Massachusetts Institute of Technology

发明人： Ryan Wade Penny ,  Anastasios John Hart

IPC分类号： B29C64/10 ,  B29C64/264 ,  H04J14/00 ,  B29C64/245 ,  B29C64/277 ,  B29C64/227 ,  B29C64/286 ,  B29C64/393 ,  B29C64/188 ,  B29C64/141 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

摘要： Systems, devices, and methods for additive manufacturing as disclosed allow for improved optical access to a build platform. In at least some embodiments a multiplexing optic of an additive manufacturing device is configured to multiplex an arbitrary number of optical paths to a build platform along a substantially common optical axis by dividing a theoretical input aperture of the multiplexing optic into a plurality of sub-apertures. Each sub-aperture can independently receive and direct an optical path to the build platform. An optical path can be a light path from a light source or an optical process monitoring path from an optical process monitoring system or optical process monitoring device. In some embodiments, an optical path can enter the multiplexing optic off-axis and/or off-angle with respect to an optical axis of the multiplexing optic. The multiplexing optic can include one or more lens elements and/or one or more mirror elements.