公开(公告)号：US12145319B2

公开(公告)日：2024-11-19

申请号：US17420029

申请日：2019-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Juan Carlos Catana Salazar ,  Jun Zeng ,  Gary J. Dispoto

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/188 ,  B33Y30/00 ,  B33Y40/20 ,  B33Y50/02 ,  G06N3/08

Abstract: Systems and methods of predicting temperature during a build of a three-dimensional (3D) part include determining a temperature profile at a plurality of layers of a part based on geometric characteristics of the 3D part as defined by a 3D part file, and adjusting a process parameter of the build based on the determined temperature.

公开(公告)号：US20220088879A1

公开(公告)日：2022-03-24

申请号：US17420029

申请日：2019-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Juan Carlos Catana Salazar ,  Jun Zeng ,  Gary J. Dispoto

IPC: B29C64/393 ,  B29C64/188 ,  B29C64/165 ,  G06N3/08 ,  B33Y50/02 ,  B33Y40/20

Abstract: Systems and methods of predicting temperature during a build of a three-dimensional (3D) part include determining a temperature profile at a plurality of layers of a part based on geometric characteristics of the 3D part as defined by a 3D part file, and adjusting a process parameter of the build based on the determined temperature.

公开(公告)号：US20210339470A1

公开(公告)日：2021-11-04

申请号：US17256674

申请日：2019-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Luke Bockman ,  Gary J. Dispoto ,  Md Abdullah Al Hafiz Khan ,  Todd Goyen

IPC: B29C64/188 ,  B29C64/218 ,  B29C64/393 ,  B29C64/209 ,  B29C64/268 ,  B29C64/165 ,  B33Y50/02 ,  B33Y40/20 ,  G06T7/00

Abstract: A system for detecting three-dimensional (3D) part drag includes an infrared image capture device to capture a plurality of thermal images of a 3D part build region of a 3D printing device on which a part is built, and an image analysis module to detect drag of the part based on a difference image produced by subtracting a first thermal image from a second thermal image.

公开(公告)号：US11511534B2

公开(公告)日：2022-11-29

申请号：US16606767

申请日：2018-03-19

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

Inventor： Sunil Kothari ,  Juan Carlos Catana ,  Tod Heiles ,  Jun Zeng ,  Gary J. Dispoto

IPC: B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/393 ,  B29C64/165 ,  B22F10/30

Abstract: In an example, an apparatus includes an image processing system, a print engine, and a vision system. The image processing system generates electronic signals based on a model of an object to be fabricated using an additive manufacturing process. The print engine performs the additive manufacturing process in a plurality of passes based on the electronic signals. The vision system acquires a plurality of thermal images of the plurality of passes and assigns individual passes to individual images based on data acquired during a build of a calibration object by the additive manufacturing process. The print engine may further include a material coater to spread a powder coating material, a plurality of fluid ejection devices to eject a fusing agent, and an emitter to emit energy to fuse the fusing agent and the powder coating material into a layer of the object to be fabricated.

公开(公告)号：US20220080672A1

公开(公告)日：2022-03-17

申请号：US17420074

申请日：2019-01-10

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Kelly Ronk ,  Anthony Powell ,  Jun Zeng ,  Md Abdullah Al Hafiz Khan ,  Tod Heiles ,  Goffril Obegi

IPC: B29C64/393 ,  B29C64/379 ,  G06T7/00 ,  B33Y50/02 ,  B33Y30/00

Abstract: A method of custom print mode generation in a three-dimensional (3D) printing device may include printing a plurality of parts with a plurality of 3D printing devices, the parts each being printed using different process parameters, and capturing a plurality of images of the parts. The method may also include, with an image analysis module, analyzing the images to classify the parts into a plurality of defect gradings, and adjusting a number of the process parameters based on characteristics of the parts identified by a user as undesirable. The examiner may also include, with a recommending module, creating a custom print mode based on the parts defect gradings and adjusted process parameters.

公开(公告)号：US20210362402A1

公开(公告)日：2021-11-25

申请号：US17256683

申请日：2019-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Luke Bockman ,  Gary J. Dispoto ,  Md Abdullah Al Hafiz Khan

IPC: B29C64/153 ,  B29C64/218 ,  B29C64/273 ,  B29C64/393 ,  B29C64/209 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A system for detecting three-dimensional (3D) part drag includes a layer deposition device, and a sensor to detect a change in a process parameter associated with the operation of the layer deposition device within a 3D part build region of a 3D printing device on which a part is built, the change in a process parameter indicating part drag.

公开(公告)号：US20210291456A1

公开(公告)日：2021-09-23

申请号：US16472929

申请日：2017-04-19

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Juan Carlos Salazar ,  Goffril Obegi ,  Jun Zeng ,  Gary J. Dispoto

IPC: B29C64/393 ,  B29C64/295 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A control and feedback technique to determine the proper location of powder control temperature regions includes detecting solid parts having specified shape and thermal characteristics. The solid parts are generated by a 3D printer. The solid parts include powder material fused on a layer by layer basis. A powder control temperature region is selected in each layer of powder material, wherein the region is located in unfused powder material adjacent to the solid parts, and wherein the region is selected based on characteristics of the shape of a build area and thermal imaging associated with any of a structural formation of the solid parts adjacent to the region, and an amount of thermal energy radiated by the solid parts adjacent to the region. The amount of thermal energy to cause fusing of the powder material on each subsequent layer is modified based on location of the powder control temperature region.

公开(公告)号：US11059229B2

公开(公告)日：2021-07-13

申请号：US16077672

申请日：2017-01-27

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

Inventor： Sunil Kothari ,  Jun Zeng ,  Kristopher Li ,  Goffril Obegi ,  Lihua Zhao ,  Gary J. Dispoto ,  Viseth Sean ,  Tod Heiles

IPC: G05B19/4097 ,  B29C64/393 ,  B29C64/386 ,  B33Y50/00 ,  B33Y50/02

Abstract: In some examples, a request to print a first three-dimensional (3D) part is received. In response to determining that the first 3D part is not similar to any 3D part referred to by an information base, a representation of the first 3D part is extracted, an indication to conduct an operation to produce a design rule for the first 3D part is sent. In response to determining that the first 3D part is similar to a matching 3D part referred to by the information base, a design rule for the matching 3D part is retrieved to print the first 3D part, where the design rule for the matching 3D part specifies a dependency of a property of the matching 3D part on an aspect associated with printing the matching 3D part.

公开(公告)号：US11511486B2

公开(公告)日：2022-11-29

申请号：US17256674

申请日：2019-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Luke Bockman ,  Gary J. Dispoto ,  Md Abdullah Al Hafiz Khan ,  Todd Goyen

IPC: B29C64/188 ,  B33Y50/02 ,  B29C64/209 ,  B29C64/393 ,  B29C64/268 ,  B29C64/165 ,  B29C64/218 ,  B33Y40/20 ,  G06T7/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: A system for detecting three-dimensional (3D) part drag includes an infrared image capture device to capture a plurality of thermal images of a 3D part build region of a 3D printing device on which a part is built, and an image analysis module to detect drag of the part based on a difference image produced by subtracting a first thermal image from a second thermal image.

公开(公告)号：US11426943B2

公开(公告)日：2022-08-30

申请号：US16472929

申请日：2017-04-19

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sunil Kothari ,  Tod Heiles ,  Juan Carlos Salazar ,  Goffril Obegi ,  Jun Zeng ,  Gary J. Dispoto

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/295 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A control and feedback technique to determine the proper location of powder control temperature regions includes detecting solid parts having specified shape and thermal characteristics. The solid parts are generated by a 3D printer. The solid parts include powder material fused on a layer by layer basis. A powder control temperature region is selected in each layer of powder material, wherein the region is located in unfused powder material adjacent to the solid parts, and wherein the region is selected based on characteristics of the shape of a build area and thermal imaging associated with any of a structural formation of the solid parts adjacent to the region, and an amount of thermal energy radiated by the solid parts adjacent to the region. The amount of thermal energy to cause fusing of the powder material on each subsequent layer is modified based on location of the powder control temperature region.