公开(公告)号：US20240181531A1

公开(公告)日：2024-06-06

申请号：US18493348

申请日：2023-10-24

Applicant: Desktop Metal, Inc.

Inventor： Jamison Go ,  Robert Michael Shydo, JR. ,  Emanuel M. Sachs ,  Michael Santorella ,  Midnight Zero ,  Jonah Samuel Myerberg ,  Joseph Gabay ,  Jeffrey von Loesecke ,  Alexander K. McCalmont

IPC: B22F10/14 ,  B22F1/10 ,  B22F10/00 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B22F10/14 ,  B22F1/10 ,  B22F10/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts through vibration of the powder, the parts, and/or structures mechanically connected to the powder and/or parts. For instance, the application of vibration may dislodge, aerate and/or otherwise increase the flowability of regions of the powder, thereby making it easier to remove the powder with a suitable means. Techniques for depowdering through vibration may be automated, thereby mitigating challenges associated with manual depowdering operations.

公开(公告)号：US11951515B2

公开(公告)日：2024-04-09

申请号：US16983138

申请日：2020-08-03

Applicant: Desktop Metal, Inc.

Inventor： Jamison Go ,  Michael Santorella ,  Jonah Samuel Myerberg ,  Matthew McCambridge ,  Alexander LeGendre ,  Joseph Gabay ,  Robert J. Nick ,  Michael Goldblatt

IPC: B08B5/02 ,  B22F1/10 ,  B22F3/10 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

CPC classification number: B08B5/02 ,  B22F1/10 ,  B22F3/1017 ,  B33Y40/20 ,  B33Y10/00 ,  B33Y30/00

Abstract: Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts by directing gas onto, or near to, the powder. While fragile green parts, such as green parts produced by binder jetting, may be fragile with respect to scraping or impacts, such parts may nonetheless be resistance to damage from directed gas, even if directed at a high pressure. Techniques for depowdering through directed application of gas may be automated, thereby mitigating challenges associated with manual depowdering operations.

公开(公告)号：US11826949B2

公开(公告)日：2023-11-28

申请号：US16328448

申请日：2017-11-14

Applicant: Desktop Metal, Inc.

Inventor： Michael Andrew Gibson ,  Jonah Samuel Myerberg ,  Ricardo Fulop ,  Michael J. Tarkanian ,  Yet-Ming Chiang ,  Jay Tobia ,  Olivia Molnar Lam

IPC: B29C64/124 ,  B29C64/245 ,  B29C64/165 ,  B33Y70/10 ,  C04B35/486 ,  C04B35/626 ,  C04B35/632 ,  C04B35/638 ,  G03F7/00 ,  G03F7/004 ,  A61K6/807 ,  A61K6/818 ,  A61K6/822 ,  A61K6/833 ,  C04B35/01 ,  C04B35/634 ,  B22F1/10 ,  B22F10/12 ,  B22F10/50 ,  A61L27/46 ,  B33Y50/02 ,  B29C64/135 ,  B22F7/04 ,  B28B1/00 ,  B33Y10/00 ,  B22F3/26 ,  B22F7/08 ,  B33Y80/00 ,  B82Y30/00 ,  B82Y40/00 ,  C22C9/06 ,  C22C19/03 ,  B22F12/90 ,  B22F10/64 ,  B22F1/102 ,  G03F7/027 ,  B22F3/10 ,  B29K509/02

CPC classification number: B29C64/124 ,  A61K6/807 ,  A61K6/818 ,  A61K6/822 ,  A61K6/833 ,  A61L27/46 ,  B22F1/10 ,  B22F3/26 ,  B22F7/04 ,  B22F7/08 ,  B22F10/12 ,  B22F10/50 ,  B28B1/001 ,  B29C64/135 ,  B29C64/165 ,  B29C64/245 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y70/10 ,  C04B35/013 ,  C04B35/486 ,  C04B35/6263 ,  C04B35/6264 ,  C04B35/632 ,  C04B35/634 ,  C04B35/638 ,  C04B35/63488 ,  G03F7/0037 ,  G03F7/0047 ,  G03F7/70416 ,  B22F1/102 ,  B22F3/1021 ,  B22F10/64 ,  B22F12/90 ,  B22F2007/042 ,  B22F2998/10 ,  B29K2509/02 ,  B33Y80/00 ,  B82Y30/00 ,  B82Y40/00 ,  C22C9/06 ,  C22C19/03 ,  G03F7/027 ,  B22F2998/10 ,  B22F10/12 ,  B22F3/1021 ,  B22F3/02

Abstract: Systems, methods, components, and materials are disclosed for stereolithographic fabrication of three-dimensional, dense objects. A resin including at least one component of a binder system and dispersed particles can be exposed to an activation light source. The activation light source can cure the at least one component of the binder system to form a green object, which can include the at least one component of the binder system and the particles. A dense object can be formed from the green object by removing the at least one component of the binder system in an extraction process and thermally processing particles to coalesce into the dense object.

公开(公告)号：US11241836B2

公开(公告)日：2022-02-08

申请号：US15949499

申请日：2018-04-10

Applicant: Desktop Metal, Inc.

Inventor： Alexander C. Barbati ,  Jonah Samuel Myerberg

IPC: B29C64/393 ,  B29C64/118 ,  B29C64/209 ,  B33Y50/02 ,  B29C64/295 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/227 ,  B29C64/343 ,  B29C64/106

Abstract: An additive manufacturing apparatus, and corresponding method, determine a mass (or volume) output flow rate of extrudate used in three-dimensional (3D) printing, and such determination is insensitive to rheological properties of a material of the extrudate being printed. A thermal energy balance on a liquefying extrusion head enables a load on a heater, used to heat the extrusion head, to be related to the output flow rate of extrudate. Based on the thermal energy balance, the output flow rate may be determined based on a duty cycle of the heater. The output flow rate may be employed to affect the 3D printing to prevent over- or under-extrusion of the extrudate and to identify a fault condition.

公开(公告)号：US11241741B2

公开(公告)日：2022-02-08

申请号：US16035296

申请日：2018-07-13

Applicant: Desktop Metal, Inc.

Inventor： Emanuel Michael Sachs ,  Uwe Bauer ,  Jonah Samuel Myerberg ,  Nicholas Graham Bandiera

IPC: B22F3/00 ,  B22F10/10 ,  B33Y10/00 ,  B29C64/118 ,  B29C64/209 ,  B33Y30/00 ,  C22C1/04 ,  B33Y50/02 ,  B33Y70/00

Abstract: For conditioning build material for fused filament fabrication, thermal power is both added to and removed from a nozzle in a manner that can reduce sensitivity of the nozzle temperature to fluctuations in build material feed rate. The amount of thermal power added is at least as large as the sum of the amount removed, the amount to condition the material, and losses to the environment. The amount removed may be at least as large as half the thermal power required to condition the material to extrusion temperature, and may be comparable to, or much larger than the conditioning amount. The larger the ratio of the amount removed to the conditioning amount, the less sensitive the nozzle temperature will be to fluctuations in build material feed rate. Fine temperature control arises, enabling building with metal-containing multi-phase materials or other materials that have a narrow working temperature range.

公开(公告)号：US20210331237A1

公开(公告)日：2021-10-28

申请号：US16328276

申请日：2017-08-31

Applicant: Desktop Metal, Inc.

Inventor： Animesh Bose ,  Jonah Samuel Myerberg

IPC: B22F1/00 ,  B33Y80/00 ,  B33Y70/10

Abstract: Devices, systems, and methods are directed at spreading sequential layers of powder across a powder bed and applying energy to each layer to form a three-dimensional object. The powder can include granules including agglomerations of metallic particles to facilitate spreading the metallic particles in each layer. The energy can be directed to the powder to reflow the granules in each layer to bind the metallic particles in the layer to one another and to one or more adjacent layers to form the three-dimensional object. Thus, in general, the agglomeration of the metallic particles in the granules can overcome constraints associated with metallic particles that are of a size ordinarily unsuitable for flowing and/or a size that presents safety risks. By overcoming these constraints, the granules can improve formation of dense finished parts from a powder and can result in formation of unique microstructures in finished parts.

公开(公告)号：US20210053121A1

公开(公告)日：2021-02-25

申请号：US16989149

申请日：2020-08-10

Applicant: Desktop Metal, Inc.

Inventor： Jamison Go ,  Robert Michael Shydo ,  Emanuel M. Sachs ,  Michael Santorella ,  Midnight Zero ,  Jonah Samuel Myerberg ,  Joseph Gabay ,  Jeffrey von Loesecke ,  Alexander K. McCalmont

IPC: B22F3/105 ,  B22F1/00

Abstract: Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts through vibration of the powder, the parts, and/or structures mechanically connected to the powder and/or parts. For instance, the application of vibration may dislodge, aerate and/or otherwise increase the flowability of regions of the powder, thereby making it easier to remove the powder with a suitable means. Techniques for depowdering through vibration may be automated, thereby mitigating challenges associated with manual depowdering operations.

公开(公告)号：US20190091933A1

公开(公告)日：2019-03-28

申请号：US15713383

申请日：2017-09-22

Applicant: Desktop Metal, Inc.

Inventor： Alexander C. Barbati ,  Jonah Samuel Myerberg

IPC: B29C64/393 ,  B29C64/118 ,  B29C64/364 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In a three-dimensional (3D) printing system and method for printing a 3D object, a material in solid form is elevated in temperature to a point at which the material melts or partially melts and begins to flow from a nozzle as a result of an actuating force or displacement resulting in a force. Since the transfer of heat to the material is central to melting and flow of the material, and the printing process ultimately, it is useful that the material be elevated to the appropriate temperature. By anticipating large fluxes of material through the nozzle and adjusting a heating rate in advance of an increased deposition rate, the material remains melted, and extrusion of the material via the nozzle is not limited by heating.

公开(公告)号：US20190060993A1

公开(公告)日：2019-02-28

申请号：US15692921

申请日：2017-08-31

Applicant: Desktop Metal, Inc.

Inventor： Animesh Bose ,  Jonah Samuel Myerberg

IPC: B22F1/00 ,  B33Y70/00

Abstract: Devices, systems, and methods are directed at spreading sequential layers of powder across a powder bed and applying energy to each layer to form a three-dimensional object. The powder can include granules including agglomerations of metallic particles to facilitate spreading the metallic particles in each layer. The energy can be directed to the powder to reflow the granules in each layer to bind the metallic particles in the layer to one another and to one or more adjacent layers to form the three-dimensional object. Thus, in general, the agglomeration of the metallic particles in the granules can overcome constraints associated with metallic particles that are of a size ordinarily unsuitable for flowing and/or a size that presents safety risks. By overcoming these constraints, the granules can improve formation of dense finished parts from a powder and can result in formation of unique microstructures in finished parts.

公开(公告)号：US20190001412A1

公开(公告)日：2019-01-03

申请号：US16121797

申请日：2018-09-05

Applicant: Desktop Metal, Inc.

Inventor： Michael Andrew Gibson ,  Jonah Samuel Myerberg ,  Ricardo Fulop ,  Ricardo Chin ,  Matthew David Verminski ,  Richard Remo Fontana ,  Christopher Allan Schuh ,  Yet-Ming Chiang ,  Anastasios John Hart

IPC: B22F3/10 ,  B33Y10/00 ,  B22F3/22 ,  B33Y40/00

Abstract: A variety of additive manufacturing techniques can be adapted to fabricate a substantially net shape object from a computerized model using materials that can be debound and sintered into a fully dense metallic part or the like. However, during sintering, the net shape will shrink as binder escapes and the base material fuses into a dense final part. If the foundation beneath the object does not shrink in a corresponding fashion, the resulting stresses throughout the object can lead to fracturing, warping, or other physical damage to the object resulting in a failed fabrication. To address this issue, a variety of techniques are disclosed for substrates and build plates that contract in a manner complementary to the object during debinding and sintering.