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公开(公告)号：US12023733B2
公开(公告)日：2024-07-02
申请号：US17075355
申请日：2020-10-20
申请人： Desktop Metal, Inc.
IPC分类号： B22F10/14 , B22F1/10 , B29C64/165 , B29K33/04 , B29K105/24 , B33Y10/00 , B33Y70/00 , B33Y80/00
CPC分类号： B22F10/14 , B22F1/10 , B29C64/165 , B33Y10/00 , B33Y70/00 , B33Y80/00 , B29K2033/04 , B29K2105/24
摘要： Methods of additive manufacturing, binder compositions for additive manufacturing, and articles produced by and/or associated with methods of additive manufacturing are generally described.
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公开(公告)号：US20210245249A1
公开(公告)日：2021-08-12
申请号：US17274336
申请日：2019-09-13
申请人： Desktop Metal, Inc.
发明人： Emanuel M. Sachs , Midnigt Zero
摘要： Techniques for depowdering additively fabricated parts are described in which powder is separated from parts by creating a large pressure differential between the powder and parts and a nearby location. The pressure differential may cause gas to quickly flow into and/or around the powder and parts, thereby producing a force against the powder and parts. Since the powder is generally much lighter than the parts, this force may be much more effective at moving the powder than moving the parts. As a result, the powder and parts may be separated from one another. The pressure differential may be created in various ways, such as by holding the parts and part in a chamber that is pressurized with air and/or other gas(es). Rapid depressurization of the chamber may produce the aforementioned pressure differential, leading to powder movement away from the parts.
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公开(公告)号：US20210154735A1
公开(公告)日：2021-05-27
申请号：US17166475
申请日：2021-02-03
申请人： Desktop Metal, Inc.
IPC分类号： B22F1/00 , B22F3/18 , B22F3/16 , B33Y10/00 , B33Y30/00 , B22F3/24 , H05K3/10 , B29C64/236 , B29C64/194 , B29C64/343 , B22F3/00 , B29C64/214 , B29C64/218 , H05K3/12 , B29C64/329 , B22F12/00
摘要： A system and corresponding method for additive manufacturing of a three-dimensional (3D) object to improve packing density of a powder bed used in the manufacturing process. The system and corresponding method enable higher density packing of the powder. Such higher density packing leads to better mechanical interlocking of particles, leading to lower sintering temperatures and reduced deformation of the 3D object during sintering. An embodiment of the system comprises means for adjusting a volume of a powder metered onto a top surface of the powder bed to produce an adjusted metered volume and means for spreading the adjusted metered volume to produce a smooth volume for forming a smooth layer of the powder with controlled packing density across the top surface of the powder bed. The controlled packing density enables uniform shrinkage, without warping, of the 3D object during sintering to produce higher quality 3D printed objects.
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4.发明公开公开(公告)号：US20240181531A1
公开(公告)日：2024-06-06
申请号：US18493348
申请日：2023-10-24
申请人： Desktop Metal, Inc.
发明人： Jamison Go , Robert Michael Shydo, JR. , Emanuel M. Sachs , Michael Santorella , Midnight Zero , Jonah Samuel Myerberg , Joseph Gabay , Jeffrey von Loesecke , Alexander K. McCalmont
摘要： 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.
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公开(公告)号：US11945943B2
公开(公告)日：2024-04-02
申请号：US16998527
申请日：2020-08-20
申请人： Desktop Metal, Inc.
CPC分类号： C08L33/02 , B22F1/10 , B22F1/103 , B22F10/00 , B33Y10/00 , B33Y70/10 , B33Y80/00 , B22F2301/255 , C08L2312/00
摘要： Methods of additive manufacturing, binder compositions for additive manufacturing, and articles produced by and/or associated with methods of additive manufacturing are generally described.
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公开(公告)号：US20210053121A1
公开(公告)日：2021-02-25
申请号：US16989149
申请日：2020-08-10
申请人： Desktop Metal, Inc.
发明人： Jamison Go , Robert Michael Shydo , Emanuel M. Sachs , Michael Santorella , Midnight Zero , Jonah Samuel Myerberg , Joseph Gabay , Jeffrey von Loesecke , Alexander K. McCalmont
摘要： 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.
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公开(公告)号：US20210053113A1
公开(公告)日：2021-02-25
申请号：US16998527
申请日：2020-08-20
申请人： Desktop Metal, Inc.
摘要： Methods of additive manufacturing, binder compositions for additive manufacturing, and articles produced by and/or associated with methods of additive manufacturing are generally described.
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公开(公告)号：US20180306512A1
公开(公告)日：2018-10-25
申请号：US15961643
申请日：2018-04-24
申请人： Desktop Metal, Inc.
发明人： Nathan Woodard , Emanuel M. Sachs
CPC分类号： F27D1/0006 , B22F3/003 , B22F2998/10 , B22F2999/00 , B32B5/08 , B32B33/00 , B32B2262/105 , B32B2262/106 , B32B2305/22 , B32B2307/304 , B32B2307/412 , B32B2307/416 , B32B2311/24 , B32B2313/04 , F27B5/10 , F27B5/14 , F27D11/12 , F27D99/0001 , F27D2099/0028 , H05B6/6402 , H05B6/647 , H05B6/6491 , B22F3/008 , B22F3/1021 , B22F2202/05 , B22F2202/06 , B22F2201/20
摘要： A furnace system includes a heating chamber, a retort assembly, and a waveguide. The heating chamber includes a shell encompassing an insulation layer and a working volume, where the working volume is configured to receive at least one part for heat treatment. The retort assembly is supported within the insulation layer and includes an inner retort surface facing the working volume. The inner retort surface is formed of at least one carbon compound reflective of microwave radiation, and the retort assembly defines a retort aperture. The waveguide is configured to direct microwave radiation from a microwave source to the retort aperture.
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公开(公告)号：US11865615B2
公开(公告)日：2024-01-09
申请号：US17117200
申请日：2020-12-10
申请人： Desktop Metal, Inc.
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.
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10.发明公开公开(公告)号：US20230150029A1
公开(公告)日：2023-05-18
申请号：US17976282
申请日：2022-10-28
申请人： Desktop Metal, Inc.
发明人： Emanuel M. Sachs , Midnight Zero
摘要： Techniques for depowdering additively fabricated parts are described in which powder is separated from parts by creating a large pressure differential between the powder and parts and a nearby location. The pressure differential may cause gas to quickly flow into and/or around the powder and parts, thereby producing a force against the powder and parts. Since the powder is generally much lighter than the parts, this force may be much more effective at moving the powder than moving the parts. As a result, the powder and parts may be separated from one another. The pressure differential may be created in various ways, such as by holding the parts and part in a chamber that is pressurized with air and/or other gas(es). Rapid depressurization of the chamber may produce the aforementioned pressure differential, leading to powder movement away from the parts.
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