公开(公告)号：US11878472B2

公开(公告)日：2024-01-23

申请号：US17388598

申请日：2021-07-29

Applicant: Stratasys, Inc.

Inventor： Christopher Prucha ,  Joel Ong

IPC: B29C64/364 ,  B33Y30/00 ,  B29C64/245 ,  B29C64/25 ,  B01D71/32 ,  B29C64/255 ,  B29C64/135 ,  B29C64/379

CPC classification number: B29C64/364 ,  B01D71/32 ,  B29C64/135 ,  B29C64/245 ,  B29C64/25 ,  B29C64/255 ,  B29C64/379 ,  B33Y30/00

Abstract: An additive manufacturing system including a base assembly and a tray assembly. The base assembly includes a build window, substantially transparent to electromagnetic radiation; a projection system configured to project electromagnetic radiation toward an upper surface of the build window; and a tray seat arranged around a perimeter of the build window. The tray assembly is configured to engage with the base assembly in an engaged configuration and includes: a tray structure defining a registration feature configured to engage the tray seat to locate an aperture proximal to the upper surface of the build window in the engaged configuration; and a separation membrane that is configured to laminate across the upper surface of the build window in response to an evacuation of gas from an interstitial region and configured to separate from the build window in response to injection of gas into the interstitial region.

公开(公告)号：US11498280B2

公开(公告)日：2022-11-15

申请号：US17066372

申请日：2020-10-08

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha ,  Stephanie Benight ,  Bill Buel

IPC: B29C64/393 ,  B29C64/295 ,  B29C64/364 ,  B29C64/135 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/255 ,  B29C64/124 ,  B29C64/232 ,  B29C64/129

Abstract: A method for additive manufacturing includes: at a build tray arranged over a build window and containing a resin reservoir of a resin, heating the resin reservoir toward a target bulk resin temperature less than a heat deflection temperature of the resin in a photocured state; at a resin interface between a surface of the build window and the resin reservoir, heating an interface layer of the resin reservoir toward a target reaction temperature; and, in response to the resin reservoir exhibiting a first temperature proximal the target bulk resin temperature and to the interface layer exhibiting a second temperature proximal the target reaction temperature: at the resin interface, selectively photocuring a first volume of the resin to form a first layer of a build adhered to a build platform; and retracting the build platform away from the build window.

公开(公告)号：US11498279B2

公开(公告)日：2022-11-15

申请号：US17066249

申请日：2020-10-08

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha ,  Stephanie Benight ,  Bill Buel

IPC: B29C64/124 ,  B29C64/295 ,  B29C64/364 ,  B29C64/393 ,  B29C64/135 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/255 ,  B29C64/232 ,  B29C64/129

Abstract: A method for additive manufacturing includes: at a build tray arranged over a build window and containing a resin reservoir of a resin, heating the resin reservoir toward a target bulk resin temperature less than a heat deflection temperature of the resin in a photocured state; at a resin interface between a surface of the build window and the resin reservoir, heating an interface layer of the resin reservoir toward a target reaction temperature; and, in response to the resin reservoir exhibiting a first temperature proximal the target bulk resin temperature and to the interface layer exhibiting a second temperature proximal the target reaction temperature: at the resin interface, selectively photocuring a first volume of the resin to form a first layer of a build adhered to a build platform; and retracting the build platform away from the build window.

公开(公告)号：US20240086583A1

公开(公告)日：2024-03-14

申请号：US18513329

申请日：2023-11-17

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha ,  Marshall Ling ,  Elton Cheung

IPC: G06F30/17 ,  B22F12/00 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

CPC classification number: G06F30/17 ,  B22F12/00 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  G06F2113/10

Abstract: A method includes: accessing a part model comprising a three-dimensional representation of a part; accessing a material profile relating exposure energy and three-dimensional polymerization geometry of a material selected for the part; segmenting the part model into a set of model layers; detecting a first upward-facing surface in the part model; defining a first model volume in a first model layer, adjacent the first upward-facing surface, and fully contained within the part model; based on the material profile, calculating a first exposure energy predicted to yield a first three-dimensional polymerization geometry approximating a first contour of the first upward-facing surface when projected onto the material during a build; populating a first print image with the first exposure energy in a first image area corresponding to the first model volume in the first model layer; and storing the first print image in a print file for the part.

公开(公告)号：US20230356458A1

公开(公告)日：2023-11-09

申请号：US18133453

申请日：2023-04-11

Applicant: Stratasys, Inc.

Inventor： Christopher Prucha ,  Joel Ong

IPC: B29C64/124 ,  B29C64/245 ,  B29C64/364 ,  B29C64/393 ,  B29C64/227 ,  B29C64/232 ,  B33Y50/02

CPC classification number: B29C64/124 ,  B29C64/245 ,  B29C64/364 ,  B29C64/393 ,  B29C64/227 ,  B29C64/232 ,  B33Y50/02 ,  B33Y40/00

Abstract: A layer-by layer method for additive manufacturing that includes: photocuring a first volume of resin to form a layer of a build at an upper surface of a separation membrane laminated over a build window; injecting a fluid into an interstitial region between the separation membrane and the build window; retracting the build from the build window; evacuating the fluid from the interstitial region; and photocuring a second volume of liquid resin to form a subsequent layer of the build between an upper surface of a separation membrane and the previous layer of the build.

公开(公告)号：US11590712B2

公开(公告)日：2023-02-28

申请号：US17518510

申请日：2021-11-03

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/124 ,  B33Y10/00

Abstract: An additive manufacturing system configured to: during a first build cycle of an additive manufacturing process for manufacturing a first layer of a build, sampling a first set of sensor data streams via the sensor suite; calculate a first likelihood of failure of the build based on the first set of sensor data streams; in response to calculating the first likelihood of failure within a first likelihood range, flag the build to indicate the first likelihood of failure; and in response to calculating the first likelihood of failure within a second likelihood range greater than the first likelihood range, pause the additive manufacturing process, and notify an operator of the additive manufacturing system of the first likelihood of failure.

公开(公告)号：US11584081B2

公开(公告)日：2023-02-21

申请号：US17549315

申请日：2021-12-13

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha ,  Stephanie Benight ,  Bill Buel

IPC: B29C64/295 ,  B29C64/124 ,  B29C64/364 ,  B29C64/393 ,  B29C64/135 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/255 ,  B29C64/232 ,  B29C64/129 ,  B33Y40/00 ,  B33Y30/00

Abstract: A method for additive manufacturing includes: at a build tray arranged over a build window and containing a resin reservoir of a resin, heating the resin reservoir toward a target bulk resin temperature less than a heat deflection temperature of the resin in a photocured state; at a resin interface between a surface of the build window and the resin reservoir, heating an interface layer of the resin reservoir toward a target reaction temperature; and, in response to the resin reservoir exhibiting a first temperature proximal the target bulk resin temperature and to the interface layer exhibiting a second temperature proximal the target reaction temperature: at the resin interface, selectively photocuring a first volume of the resin to form a first layer of a build adhered to a build platform; and retracting the build platform away from the build window.

公开(公告)号：US20230004143A1

公开(公告)日：2023-01-05

申请号：US17856860

申请日：2022-07-01

Applicant: Stratasys, Inc.

Inventor： Joel Ong

IPC: G05B19/4093 ,  G06T19/20 ,  G06T7/11 ,  G06T7/13 ,  G06T7/73 ,  G06T7/62 ,  B33Y50/02 ,  B29C64/393

Abstract: A method for generating print images for additive manufacturing includes: accessing a part model; accessing a set of dimensional tolerances for the part model; and segmenting the part model into a set of model layers. The method also includes, and, for each model layer: detecting an edge in the model layer; assigning a dimensional tolerance to the edge; defining an outer exposure shell inset from the edge by an erosion distance inversely proportional to a width of the dimensional tolerance; defining an inner exposure shell inset from the outer exposure shell and scheduled for exposure separately from the outer exposure shell; defining an a outer exposure energy proportional to the width of the dimensional tolerance and assigned to the outer exposure shell; and defining an inner exposure energy greater than the outer exposure energy and assigned to the inner exposure shell.

公开(公告)号：US20210247325A1

公开(公告)日：2021-08-12

申请号：US17173174

申请日：2021-02-10

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha ,  Steve Kranz ,  Eduardo González-Maldonado

IPC: G01N21/88 ,  B33Y50/00

Abstract: A method includes: accessing a first selection of a first test variable; based on the selection, photocuring a first test build by varying a value of the first test variable over a first set of test regions; accessing a first set of measurements of the first test build; calculating a target range of the first test variable based on the first set of measurements; accessing a second selection of a second test variable; based on the second selection, photocuring a second test build by varying a value of the second test variable over a second set of test regions while maintaining a target value of the first test variable within the target range of the first test variable; accessing a second set of measurements of the second test build; and calculating a second target range of the second test variable based on the second set of measurements.

公开(公告)号：US12019425B2

公开(公告)日：2024-06-25

申请号：US18227243

申请日：2023-07-27

Applicant: Stratasys, Inc.

Inventor： Joel Ong

IPC: G05B19/4093 ,  B29C64/393 ,  B33Y50/02 ,  G06T7/11 ,  G06T7/13 ,  G06T7/62 ,  G06T7/73 ,  G06T19/20 ,  B29C64/135

CPC classification number: G05B19/40931 ,  B29C64/393 ,  B33Y50/02 ,  G06T7/11 ,  G06T7/13 ,  G06T7/62 ,  G06T7/75 ,  G06T19/20 ,  B29C64/135 ,  G05B2219/49023 ,  G06T2219/012 ,  G06T2219/2008

Abstract: A method for generating print images for additive manufacturing includes: accessing a part model; accessing a set of dimensional tolerances for the part model; and segmenting the part model into a set of model layers. The method also includes, and, for each model layer: detecting an edge in the model layer; assigning a dimensional tolerance to the edge; defining an outer exposure shell inset from the edge by an erosion distance inversely proportional to a width of the dimensional tolerance; defining an inner exposure shell inset from the outer exposure shell and scheduled for exposure separately from the outer exposure shell; defining an a outer exposure energy proportional to the width of the dimensional tolerance and assigned to the outer exposure shell; and defining an inner exposure energy greater than the outer exposure energy and assigned to the inner exposure shell.