公开(公告)号：US12017405B2

公开(公告)日：2024-06-25

申请号：US18193505

申请日：2023-03-30

申请人： Desktop Metal, Inc.

发明人： Jonah Samuel Myerberg ,  Anastasios John Hart

IPC分类号： B29C64/153 ,  B22F1/10 ,  B22F1/102 ,  B29C64/255 ,  B29C64/264 ,  B29K23/00 ,  B29K91/00

CPC分类号： B29C64/153 ,  B22F1/10 ,  B22F1/102 ,  B29C64/255 ,  B29C64/264 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2091/00 ,  B22F2998/10 ,  B22F1/10 ,  B22F10/16 ,  B22F2202/11 ,  B22F3/1021 ,  B22F2998/10 ,  B22F1/102 ,  B22F10/16 ,  B22F2202/11 ,  B22F3/1021

摘要： According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.

公开(公告)号：US20240139806A1

公开(公告)日：2024-05-02

申请号：US18363441

申请日：2023-08-01

申请人： Desktop Metal, Inc.

发明人： Jamison Go ,  Daniel Sachs ,  Robert J. Nick ,  Jonah Samuel Myerberg ,  Michael Goldblatt

IPC分类号： B22F3/24 ,  B08B3/04 ,  B08B3/10 ,  B08B3/12 ,  B08B3/14 ,  B22F10/00 ,  B33Y40/20

CPC分类号： B22F3/24 ,  B08B3/045 ,  B08B3/102 ,  B08B3/12 ,  B08B3/14 ,  B22F10/00 ,  B33Y40/20 ,  B22F2003/247

摘要： Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from additively fabricated parts through liquid immersion of the parts. Motion of the liquid, such as liquid currents, may dislodge or otherwise move powder away from additively fabricated parts to which it is adhered or otherwise proximate to. The liquid may also provide a vehicle to carry away powder from the additively fabricated parts. Removed powder may be filtered or otherwise separated from the liquid to allow recirculation of the liquid to the parts and/or to enable re-use of the powder in subsequent additive fabrication processes. Techniques for depowdering through liquid immersion may be automated, thereby mitigating challenges associated with manual depowdering operations.

公开(公告)号：US11618212B2

公开(公告)日：2023-04-04

申请号：US16824987

申请日：2020-03-20

申请人： Desktop Metal, Inc.

发明人： Jonah Samuel Myerberg ,  Anastasios John Hart

IPC分类号： B29C64/153 ,  B29C64/264 ,  B29C64/255 ,  B29K91/00 ,  B29K23/00

摘要： According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.

公开(公告)号：US20210237159A1

公开(公告)日：2021-08-05

申请号：US17117200

申请日：2020-12-10

申请人： Desktop Metal, Inc.

发明人： Jamison Go ,  Michael Santorella ,  Jonah Samuel Myerberg ,  Matthew McCambridge ,  Alexander LeGendre ,  Robert J. Nick ,  Michael Goldblatt ,  Robert Michael Shydo, JR. ,  Midnight Zero ,  Emanuel M. Sachs ,  Jeffrey von Loesecke ,  Alexander K. McCalmont ,  George Hudelson ,  Joe Pantano

IPC分类号： B22F10/68 ,  B33Y40/20 ,  B08B5/02 ,  B08B7/04 ,  B03C1/30

摘要： Techniques for depowdering additively fabricated parts are described. The techniques utilize various mechanisms to separate powder from parts. For instance, techniques for depowdering described herein may include fabrication of auxiliary structures in addition to fabrication of parts. Certain auxiliary structures may aid with depowdering operations, and may be fabricated along with parts during an additive fabrication process. The auxiliary structures may be shaped and/or have positional and/or geometrical relationships to the parts during fabrication. For instance, an auxiliary structure may include a cage structure fabricated around one or more parts.

公开(公告)号：US20210060651A1

公开(公告)日：2021-03-04

申请号：US16999210

申请日：2020-08-21

申请人： Desktop Metal, Inc.

发明人： Jamison Go ,  Daniel Sachs ,  Robert J. Nick ,  Jonah Samuel Myerberg ,  Michael Goldblatt

IPC分类号： B22F3/24 ,  B33Y40/20 ,  B22F3/105 ,  B08B3/10 ,  B08B3/14 ,  B08B3/04 ,  B08B3/12

摘要： Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from additively fabricated parts through liquid immersion of the parts. Motion of the liquid, such as liquid currents, may dislodge or otherwise move powder away from additively fabricated parts to which it is adhered or otherwise proximate to. The liquid may also provide a vehicle to carry away powder from the additively fabricated parts. Removed powder may be filtered or otherwise separated from the liquid to allow recirculation of the liquid to the parts and/or to enable re-use of the powder in subsequent additive fabrication processes. Techniques for depowdering through liquid immersion may be automated, thereby mitigating challenges associated with manual depowdering operations.

公开(公告)号：US10456833B2

公开(公告)日：2019-10-29

申请号：US15868481

申请日：2018-01-11

申请人： Desktop Metal, Inc.

发明人： 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分类号： B22F7/02 ,  B22F7/04 ,  B29C64/112 ,  B29C64/20 ,  B22F3/10 ,  B33Y40/00 ,  B22F3/105 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y70/00 ,  B22F3/00 ,  B28B1/00 ,  B29C64/386 ,  B29C64/10 ,  B29C64/165 ,  B22F3/24 ,  B33Y30/00 ,  B22F3/22 ,  B33Y80/00 ,  B29C64/147 ,  B29C64/264 ,  B29C64/153 ,  B29C64/106 ,  B29C64/268 ,  B29C64/40 ,  B33Y50/00 ,  B29K105/16 ,  B29K505/00 ,  B29K507/04 ,  B29K509/02 ,  B22F1/00

摘要： 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.

公开(公告)号：US10406751B2

公开(公告)日：2019-09-10

申请号：US15892895

申请日：2018-02-09

申请人： Desktop Metal, Inc.

发明人： Ricardo Fulop ,  Robert Michael Shydo ,  Jonah Samuel Myerberg ,  Charles Edward Martin ,  Justin Cumming ,  Paul Hoisington ,  Emanuel M. Sachs ,  George Hudelson ,  Daniel Sachs ,  Jamison Go ,  Eric Wong ,  Alexander K. McCalmont

IPC分类号： B29C64/35 ,  B22F3/00 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B22F3/105 ,  B33Y40/00 ,  B08B3/12 ,  B08B5/02 ,  B08B7/02 ,  B29C64/357 ,  B22F3/10

摘要： A system for separating objects within a stacked powder print bed of nested objects comprises a build box configured to contain the powder print bed. The build box has a build box top and a build box floor. The system further includes an elongated aperture formed in a side wall of the build box, and a de-powdering subsystem configured to mechanically and electrically engage the build box. A separating blade associated with the de-powdering subsystem is configured to be inserted through the elongated aperture and into the powder print bed between a top-most print bed layer of the nested objects and a second print bed layer directly below and contiguous with the top-most layer, thereby forming an isolated powder print bed between the separating blade and the build box top. The unbound powder may be agitated by various techniques and subsequently removed from the objects.

公开(公告)号：US10350682B2

公开(公告)日：2019-07-16

申请号：US15469432

申请日：2017-03-24

申请人： Desktop Metal, Inc.

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

IPC分类号： B22F3/10 ,  B33Y40/00 ,  B22F3/105 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y70/00 ,  B22F3/00 ,  B28B1/00 ,  B29C64/386 ,  B29C64/10 ,  B29C64/165 ,  B22F3/24 ,  B33Y30/00 ,  B22F3/22 ,  B33Y80/00 ,  B29C64/147 ,  B29C64/264 ,  B29C64/153 ,  B29C64/106 ,  B29C64/268 ,  B22F7/02 ,  B22F7/04 ,  B29C64/112 ,  B29C64/20 ,  B29C64/40 ,  B33Y50/00 ,  B29K105/16 ,  B29K505/00 ,  B29K507/04 ,  B29K509/02 ,  B22F1/00

摘要： Support structures are used in certain additive fabrication processes to permit fabrication of a greater range of object geometries. For additive fabrication processes with materials that are subsequently sintered into a final part, an interface layer is fabricated between the object and support in order to inhibit bonding between adjacent surfaces of the support structure and the object during sintering. Interface layers suitable for manufacture with an additive manufacturing system may resist the formation of bonds between a support structure and an object during subsequent sintering processes.

公开(公告)号：US10232443B2

公开(公告)日：2019-03-19

申请号：US16023957

申请日：2018-06-29

申请人： Desktop Metal, Inc.

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

IPC分类号： B22F3/24 ,  B33Y50/02 ,  B33Y30/00 ,  B33Y10/00 ,  B22F3/115 ,  B22F3/00 ,  B22F3/105 ,  B29C64/106 ,  B22F9/00 ,  B29K505/00 ,  B29K509/08 ,  B29K105/16 ,  B29C64/40 ,  B29K101/12

摘要： A printer fabricates an object from a computerized model using a fused filament fabrication process. The shape of an extrusion nozzle may be varied during extrusion to control, e.g., an amount of build material deposited, a shape of extrudate exiting the nozzle, a feature resolution, and the like.

公开(公告)号：US20180304367A1

公开(公告)日：2018-10-25

申请号：US15959111

申请日：2018-04-20

申请人： Desktop Metal, Inc.

发明人： Jonah Samuel Myerberg ,  Ricardo Fulop ,  Paul A. Hoisington ,  Emanuel Michael Sachs ,  Michael Andrew Gibson ,  Anastasios John Hart ,  Keith Vaillancourt ,  Steven Garrant ,  Brett Schuster

IPC分类号： B22F3/16 ,  B22F1/00 ,  B22F3/18

CPC分类号： B22F3/16 ,  B22F1/0059 ,  B22F1/0081 ,  B22F3/003 ,  B22F3/004 ,  B22F3/008 ,  B22F3/18 ,  B22F2003/1056 ,  B22F2202/01 ,  B22F2202/11 ,  B22F2998/00 ,  B22F2999/00 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

摘要： The devices, systems, and methods of the present disclosure are directed to spreading powder to facilitate accurate layer-by-layer fabrication of three-dimensional objects formed through binder jetting. More specifically, a spreader may be moved across a volume defined by a powder box to spread the powder in a layer. As the spreader is moved across the volume, the spreader may vibrate to pack the powder in the volume. By applying this vibration to the powder on a layer-by-layer basis, the resulting three-dimensional object formed through the binder jetting process may have improved density. In turn, such improved density may be useful for forming the three-dimensional objects into finished parts meeting target density standards, which may be particularly useful in the fabrication of metal parts. Further, or instead, applying vibration to the powder may reduce the likelihood of layer-to-layer variations in the three-dimensional object, thus reducing the likelihood of defects in finished parts.