公开(公告)号：US20230373007A1

公开(公告)日：2023-11-23

申请号：US17664470

申请日：2022-05-23

Applicant: Xerox Corporation

Inventor： PriyaankaDevi Guggilapu ,  Benjamin Paulson ,  Dinesh Krishna Kumar Jayabal ,  Collin A. Ladd ,  Stuart A. Schweid

IPC: B22F10/38 ,  B22F10/22 ,  B22F10/85 ,  B22F12/53 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22F10/385 ,  B22F10/22 ,  B22F10/85 ,  B22F12/53 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is operated to compensate for surface deviations of overhanging features differently than for non-overhanging features. The compensation technique used for the overhanging features depends on whether an edge of the overhanging feature being formed in a next layer has curved or sharp corners.

公开(公告)号：US11794255B2

公开(公告)日：2023-10-24

申请号：US17159975

申请日：2021-01-27

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： David A Mantell ,  Christopher T. Chungbin ,  Daniel Cormier ,  David G. Tilley ,  Walter Hsiao ,  PriyaankaDevi Guggilapu ,  Michael F. Dapiran ,  Dinesh Krishna Kumar Jayabal

IPC: B22F10/85 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F10/22 ,  B22F12/53

CPC classification number: B22F10/85 ,  B22F10/22 ,  B22F12/53 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is operated to form sloping surfaces having a slope angle of more than 45° from a line that is perpendicular to the structure on which the layer forming the slope surface is formed. The angle corresponds to a step-out distance from the perpendicular line and a maximum individual step-out distance determined from empirically derived data. Multiple passes of an ejection head of the apparatus can be performed within a layer to form a sloped edge and the mass of the sloped structure is distributed within the sloped edge so the edge is formed without defects.

公开(公告)号：US20220234111A1

公开(公告)日：2022-07-28

申请号：US17159975

申请日：2021-01-27

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： David A. Mantell ,  Christopher T. Chungbin ,  Daniel Cormier ,  David G. Tilley ,  Walter Hsiao ,  PriyaankaDevi Guggilapu ,  Michael F. Dapiran ,  Dinesh Krishna Kumar Jayabal

IPC: B22F10/85 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F10/22

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is operated to form sloping surfaces having a slope angle of more than 45° from a line that is perpendicular to the structure on which the layer forming the slope surface is formed. The angle corresponds to a step-out distance from the perpendicular line and a maximum individual step-out distance determined from empirically derived data. Multiple passes of an ejection head of the apparatus can be performed within a layer to form a sloped edge and the mass of the sloped structure is distributed within the sloped edge so the edge is formed without defects.

公开(公告)号：US20250033112A1

公开(公告)日：2025-01-30

申请号：US18358369

申请日：2023-07-25

Applicant: XEROX CORPORATION

Inventor： PriyaankaDevi Guggilapu ,  David A. Mantell ,  Schuyler Kylstra ,  Madhav Gentela

IPC: B22D23/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A method of operating a printer to fill an internal volume of a three-dimensional object is includes determining a total number of layers required to fill an internal volume of a three-dimensional object, forming at least one floor layer within the internal volume, using a maximum individual stepout distance to generate machine-ready instructions that operate the printer to form one or more pre-determined sloped edges of a plurality of sections of a sparse infill structure in the layer of the internal volume to be filled, thereby forming at least one sparse infill layer. A drop ejecting apparatus includes a controller operatively connected to a reservoir, an ejector, and at least one actuator, the controller being configured to perform the method as described herein.

公开(公告)号：US11660822B2

公开(公告)日：2023-05-30

申请号：US17157568

申请日：2021-01-25

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Stuart A. Schweid ,  David A. Mantell ,  PriyaankaDevi Guggilapu ,  David G. Tilley ,  Christopher T. Chungbin ,  Walter Hsiao ,  Dinesh Krishna Kumar Jayabal ,  Daniel Cormier

IPC: B29C64/393 ,  B33Y30/00 ,  G06F18/20 ,  G06F18/2411 ,  B22F10/22 ,  B29C64/112 ,  G06N3/004 ,  B22F12/53

CPC classification number: B29C64/393 ,  B33Y30/00 ,  G06F18/2411 ,  G06F18/295 ,  B22F12/53 ,  G06N3/004

Abstract: A slicer in a material drop ejecting three-dimensional (3D) object printer identifies the positions and local densities for a plurality of infill lines within a perimeter to be formed within a layer of an object to be formed by the printer. The local density of each infill line is filtered and a control law is applied to the filtered local density to identify an error in the local density compared to a target density. This process is performed iteratively until the error is within a predetermined tolerance range about the target local density. The error is used to generate machine ready instructions to operate the 3D object printer to achieve the target density for the infill lines.

公开(公告)号：US11890674B2

公开(公告)日：2024-02-06

申请号：US17652988

申请日：2022-03-01

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Christopher T. Chungbin ,  PriyaankaDevi Guggilapu ,  Daniel R. Cormier ,  David G. Tilley ,  David A. Mantell ,  Michael F. Dapiran

IPC: B33Y30/00 ,  B33Y50/02 ,  B22F10/85 ,  B22D23/00 ,  B22F10/22 ,  B33Y10/00 ,  B22F12/50

CPC classification number: B22F10/22 ,  B22D23/003 ,  B22F10/85 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A metal object manufacturing apparatus is configured to eject melted metal drops to form a continuous metal line over a line of spatially separated pillars in a single pass. The ejection frequency for forming the continuous metal line is different than the frequency used to form the pillars. In one embodiment, the ejection frequency for forming the pillars is about 100 Hz and the frequency used to form the continuous metal line over the line of spatially separated pillars is about 300 Hz with a drop spacing of about 0.2 mm. Continuous metal lines are formed to extend the continuous metal lines over the pillars laterally to fill the gaps between the continuous metal lines over the pillars. These continuous metal lines that fill the gaps are formed while operating the ejection head at the 300 Hz frequency with a drop spacing of 0.28 mm.

公开(公告)号：US20230241841A1

公开(公告)日：2023-08-03

申请号：US18299636

申请日：2023-04-12

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Stuart A. Schweid ,  David A. Mantell ,  PriyaankaDevi Guggilapu ,  David G. Tilley ,  Christopher T. Chungbin ,  Walter Hsiao ,  Dinesh Krishna Kumar Jayabal ,  Daniel Cormier

IPC: B29C64/393 ,  B33Y30/00 ,  G06F18/20 ,  G06F18/2411

CPC classification number: B29C64/393 ,  B33Y30/00 ,  G06F18/295 ,  G06F18/2411 ,  G06N3/004

Abstract: A slicer in a material drop ejecting three-dimensional (3D) object printer identifies the positions and local densities for a plurality of infill lines within a perimeter to be formed within a layer of an object to be formed by the printer. The local density of each infill line is filtered and a control law is applied to the filtered local density to identify an error in the local density compared to a target density. This process is performed iteratively until the error is within a predetermined tolerance range about the target local density. The error is used to generate machine ready instructions to operate the 3D object printer to achieve the target density for the infill lines.

公开(公告)号：US20220234298A1

公开(公告)日：2022-07-28

申请号：US17157568

申请日：2021-01-25

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Stuart A. Schweid ,  David A. Mantell ,  PriyaankaDevi Guggilapu ,  David G. Tilley ,  Christopher T. Chungbin ,  Walter Hsiao ,  Dinesh Krishna Kumar Jayabal ,  Daniel Cormier

IPC: B29C64/393 ,  B29C64/112 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A slicer in a material drop ejecting three-dimensional (3D) object printer identifies the positions and local densities for a plurality of infill lines within a perimeter to be formed within a layer of an object to be formed by the printer. The local density of each infill line is filtered and a control law is applied to the filtered local density to identify an error in the local density compared to a target density. This process is performed iteratively until the error is within a predetermined tolerance range about the target local density. The error is used to generate machine ready instructions to operate the 3D object printer to achieve the target density for the infill lines.

公开(公告)号：US20240272612A1

公开(公告)日：2024-08-15

申请号：US18168126

申请日：2023-02-13

Applicant: XEROX CORPORATION

Inventor： Stuart A. Schweid ,  PriyaankaDevi Guggilapu ,  Benjamin Paulson ,  Collin Alexander Ladd ,  Dinesh Krishna Kumar Jayabal ,  David A. Mantell

IPC: G05B19/4099 ,  G06N20/00

CPC classification number: G05B19/4099 ,  G06N20/00 ,  G05B2219/49023

Abstract: Systems for and methods of providing a feed rate for three-dimensional printing a part are presented. The disclosed techniques include: obtaining computer readable toolpath instructions for the part, where the toolpath instructions specify a nominal feed rate for a toolpath segment and spatial toolpath data of the toolpath segment; providing an input including the spatial toolpath data to a trained machine learning system, where the trained machine learning system has been trained using training data including: training spatial toolpath data, training closed loop gain data, and training feed rate data; obtaining a revised feed rate for the toolpath segment different from the nominal feed rate for the toolpath segment, where the revised feed rate is output from the trained machine learning system; and providing revised computer readable toolpath instructions, where the revised machine learning toolpath instructions include the revised feed rate.

公开(公告)号：US12023871B2

公开(公告)日：2024-07-02

申请号：US18299636

申请日：2023-04-12

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Stuart A. Schweid ,  David A. Mantell ,  PriyaankaDevi Guggilapu ,  David G. Tilley ,  Christopher T. Chungbin ,  Walter Hsiao ,  Dinesh Krishna Kumar Jayabal ,  Daniel Cormier

IPC: B29C64/393 ,  B33Y30/00 ,  G06F18/20 ,  G06F18/2411 ,  B22F10/85 ,  B22F12/53 ,  G06N3/004 ,  G06N20/00

CPC classification number: B29C64/393 ,  B33Y30/00 ,  G06F18/2411 ,  G06F18/295 ,  B22F12/53 ,  G06N3/004

Abstract: A slicer in a material drop ejecting three-dimensional (3D) object printer identifies the positions and local densities for a plurality of infill lines within a perimeter to be formed within a layer of an object to be formed by the printer. The local density of each infill line is filtered and a control law is applied to the filtered local density to identify an error in the local density compared to a target density. This process is performed iteratively until the error is within a predetermined tolerance range about the target local density. The error is used to generate machine ready instructions to operate the 3D object printer to achieve the target density for the infill lines.