公开(公告)号：US20230078198A1

公开(公告)日：2023-03-16

申请号：US17867201

申请日：2022-07-18

Applicant: Formlabs, Inc.

Inventor： Maxim Lobovsky ,  Shane Wighton ,  Dmitri Megretski ,  Adam Damiano

IPC: B29C64/255 ,  B65D65/40 ,  B29C64/264 ,  B33Y30/00 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/124 ,  B29C64/393 ,  B29C64/227 ,  G01L1/12 ,  G01L5/00 ,  G04F10/10 ,  B29C64/245 ,  B29C64/153 ,  B29C64/218 ,  B33Y40/00 ,  B29C64/307 ,  B29C64/223 ,  B29C64/135

Abstract: Techniques for force sensing in additive fabrication are provided. According to some aspects, an additive fabrication device may include a force sensor configured to measure a force applied to a build platform during fabrication. A length of time taken for a layer of material to separate from a surface other than the build platform to which it is adhered may be determined based on measurements from the force sensor. Subsequent additive fabrication operations, such as subsequent motion of the build platform, may be adapted based on the determined length of time.

公开(公告)号：US11579041B2

公开(公告)日：2023-02-14

申请号：US16818886

申请日：2020-03-13

Applicant: Formlabs, Inc.

Inventor： Andrew M. Goldman ,  Henry Whitney ,  Justin Keenan ,  Benjamin FrantzDale ,  Michael Fogleman ,  Maxim Lobovsky

IPC: B29C64/393 ,  G01M11/02 ,  B33Y30/00 ,  B33Y50/00 ,  B29C64/386

Abstract: According to some aspects, calibration techniques are provided that allow an optics module of an additive fabrication device to be installed and operated in a stereolithography device by a user. In particular, the calibration techniques enable the optics module to be calibrated in a way that only depends on the characteristics of the optics module, and not upon any other components of the stereolithography device. As a result, the techniques enable a user of a stereolithography device to remove one optics module and replace it with another, without it being necessary to repair or replace the whole device. In some cases, the calibration techniques may include directing light onto one or more fiducial targets within the stereolithography device and measuring light scattered from said targets.

公开(公告)号：US11203162B2

公开(公告)日：2021-12-21

申请号：US16776363

申请日：2020-01-29

Applicant: Formlabs, Inc.

Inventor： Shane Wighton ,  Maxim Lobovsky ,  Peter Schmidt-Nielsen

IPC: G06T15/08 ,  G06T17/00 ,  G06T19/00 ,  B29C64/40 ,  B29C64/118 ,  B29C64/147 ,  B29C64/153 ,  B29C64/135 ,  B29C64/165 ,  B29C64/106 ,  B29C33/38 ,  B29C64/124 ,  B29C64/141 ,  B29C64/112 ,  B29C64/129 ,  B33Y50/00 ,  B29C64/393 ,  B29C64/386 ,  B29C33/44 ,  G06F111/10 ,  G06F113/10 ,  B33Y10/00 ,  B33Y50/02

Abstract: Techniques for evaluating support for an object to be fabricated via an additive fabrication device are provided. In some embodiments, a three-dimensional representation of the object is obtained and a plurality of voxels corresponding to the representation of the object is generated. A first supportedness value may be assigned to a first voxel of the plurality of voxels based on an amount of support provided by a support structure to the first voxel, and a second supportedness value determined for a second voxel of the plurality of voxels, wherein the second voxel neighbors the first voxel, and wherein the second supportedness value is determined based on the first supportedness value of the first voxel and a weight value representing a transmission rate of supportedness through voxels of the plurality of voxels.

公开(公告)号：US20210339432A1

公开(公告)日：2021-11-04

申请号：US17374037

申请日：2021-07-13

Applicant: Formlabs, Inc.

Inventor： Alex McCarthy ,  Maxim Lobovsky ,  Martin Galese

IPC: B29C33/38 ,  B29C33/56 ,  B29C64/112 ,  B29C39/36 ,  B28B7/34 ,  B29C64/129 ,  B29C33/00 ,  B29C33/40 ,  B29C39/26 ,  B29C33/52 ,  B22D29/00 ,  B33Y10/00

Abstract: According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

公开(公告)号：US20200346372A1

公开(公告)日：2020-11-05

申请号：US16871646

申请日：2020-05-11

Applicant: Formlabs, Inc.

Inventor： Alex McCarthy ,  Maxim Lobovsky ,  Martin Galese

IPC: B29C33/38 ,  B29C33/56 ,  B29C64/112 ,  B29C39/36 ,  B28B7/34 ,  B29C64/129 ,  B29C33/00 ,  B29C33/40 ,  B29C39/26 ,  B29C33/52

Abstract: According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

公开(公告)号：US20180133973A1

公开(公告)日：2018-05-17

申请号：US15866766

申请日：2018-01-10

Applicant: Formlabs, Inc.

Inventor： Maxim Lobovsky ,  Steven Thomas ,  Benjamin FrantzDale

IPC: B29C64/393 ,  B29C64/135 ,  B29C64/20 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y30/00 ,  B29C64/386

CPC classification number: B29C64/393 ,  B29C64/135 ,  B29C64/20 ,  B29C64/245 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: According to some aspects, a method of additive fabrication wherein a plurality of layers of material are formed on a build platform is provided. The method may comprise forming a layer of material in contact with a container, and subsequent to the forming of the layer of material, rotating the container relative to the build platform and moving the build platform relative to the container, thereby creating an effective fulcrum about an axis, wherein the rotating of the container and moving of the build platform causes the layer of material to separate from the container. According to some embodiments, the container may be configured to rotate about a fixed axis. According to some embodiments, moving the build platform may comprise moving the build platform toward the container.

公开(公告)号：US12285913B2

公开(公告)日：2025-04-29

申请号：US17813771

申请日：2022-07-20

Applicant: Formlabs Inc.

Inventor： Andrew Goldman ,  Hayley Whelan ,  Henry Whitney ,  Maxim Lobovsky ,  Mehmet Dogan

IPC: B33Y10/00 ,  B29C64/129 ,  B29C64/286 ,  B33Y30/00 ,  C08J5/18 ,  C08K5/23 ,  C09B67/20 ,  G02F1/1335 ,  G02F1/13357

Abstract: A curing system for an additive fabrication system includes a light source, a liquid crystal cell, and a first polarizer. The light source is configured to emit light at a wavelength suitable for curing a material. The liquid crystal cell is configured to receive the light from the light source. The first polarizer comprises a polyvinyl alcohol (PVA) matrix and organic dyes impregnated into the PVA matrix.

公开(公告)号：US11992976B2

公开(公告)日：2024-05-28

申请号：US17374037

申请日：2021-07-13

Applicant: Formlabs, Inc.

Inventor： Alex McCarthy ,  Maxim Lobovsky ,  Martin Galese

IPC: B33Y10/00 ,  B22D18/06 ,  B22D29/00 ,  B28B7/34 ,  B29C33/00 ,  B29C33/38 ,  B29C33/40 ,  B29C33/52 ,  B29C33/56 ,  B29C39/26 ,  B29C39/36 ,  B29C64/112 ,  B29C64/129 ,  B29C39/24 ,  B29K71/00 ,  B29K503/08

CPC classification number: B29C33/3842 ,  B22D29/00 ,  B28B7/346 ,  B29C33/0011 ,  B29C33/3807 ,  B29C33/3814 ,  B29C33/40 ,  B29C33/52 ,  B29C33/565 ,  B29C39/26 ,  B29C39/36 ,  B29C64/112 ,  B29C64/129 ,  B33Y10/00 ,  B29C2033/385 ,  B29C39/24 ,  B29K2071/00 ,  B29K2503/08 ,  B29K2901/10

Abstract: According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

公开(公告)号：US11987002B2

公开(公告)日：2024-05-21

申请号：US17826787

申请日：2022-05-27

Applicant: Formlabs, Inc.

Inventor： Jonathan Fussman ,  Hugo Liebrand ,  David Sadowski ,  Alexander K. McCalmont ,  Craig Broady ,  Nicholaus Ray Lancaster ,  Maxim Lobovsky

IPC: B29C64/35 ,  B08B3/08 ,  B08B3/14 ,  B08B13/00 ,  B33Y40/20

CPC classification number: B29C64/35 ,  B08B3/08 ,  B08B3/14 ,  B08B13/00 ,  B33Y40/20

Abstract: Washing apparatus and methods used to process additively fabricated (e.g., 3D printed) parts are described herein. The apparatus and methods may be used to wash uncured liquid resin from the parts. The washing apparatus may include two or more containers for storing respective solvents and may be fluidly connected to a vessel in which the additively fabricated parts are placed. One or more pumps and one or more valves may be controlled to introduce a first solvent from one of the containers into the vessel to wash the part in a first wash cycle and then the valve(s) may be re-configured to introduce a second solvent from another container into the vessel to wash the part in a second wash cycle. Advantageously, the parts may remain in the same vessel while being washed with both solvents in succession.

公开(公告)号：US20220363012A1

公开(公告)日：2022-11-17

申请号：US17556069

申请日：2021-12-20

Applicant: Formlabs, Inc.

Inventor： Shane Wighton ,  Maxim Lobovsky ,  Peter Schmidt-Nielsen

IPC: B29C64/40 ,  B29C64/118 ,  B29C64/147 ,  B29C64/153 ,  B29C64/135 ,  B29C64/165 ,  B29C64/106 ,  B29C33/38 ,  B29C64/124 ,  B29C64/141 ,  B29C64/112 ,  B29C64/129 ,  B33Y50/00 ,  B29C64/393 ,  B29C64/386 ,  B29C33/44

Abstract: Techniques for evaluating support for an object to be fabricated via an additive fabrication device are provided. In some embodiments, a three-dimensional representation of the object is obtained and a plurality of voxels corresponding to the representation of the object is generated. A first supportedness value may be assigned to a first voxel of the plurality of voxels based on an amount of support provided by a support structure to the first voxel, and a second supportedness value determined for a second voxel of the plurality of voxels, wherein the second voxel neighbors the first voxel, and wherein the second supportedness value is determined based on the first supportedness value of the first voxel and a weight value representing a transmission rate of supportedness through voxels of the plurality of voxels.