DE102014000022A1 - Device for producing three-dimensional objects by successively solidifying layers - Google Patents
Device for producing three-dimensional objects by successively solidifying layers Download PDFInfo
- Publication number
- DE102014000022A1 DE102014000022A1 DE102014000022.2A DE102014000022A DE102014000022A1 DE 102014000022 A1 DE102014000022 A1 DE 102014000022A1 DE 102014000022 A DE102014000022 A DE 102014000022A DE 102014000022 A1 DE102014000022 A1 DE 102014000022A1
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- Prior art keywords
- gas stream
- process chamber
- suction
- building material
- gas
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
- B22F10/322—Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/70—Gas flow means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2201/00—Treatment under specific atmosphere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
Abstract
Die Erfindung betrifft eine Vorrichtung 1 zum Herstellen von dreidimensionalen Objekten durch aufeinanderfolgendes Verfestigen von Schichten eines mittels Strahlung 2 verfestigbaren pulverartigen Baumaterials 3 an den dem jeweiligen Querschnitt des Objektes entsprechenden Stellen, mit einem Gehäuse 4, in dem eine Prozesskammer 5 angeordnet ist, einem darin untergebrachten Bauraum 6, in welchem eine Tragevorrichtung 7 zum Tagen des Objekts mit einem höhenverstellbaren Träger 8 angeordnet ist, einer Beschichtervorrichtung 9 zum Aufbringen von Schichten des Baumaterials 3 auf die Tragevorrichtung 7 oder eine zuvor gebildete Schicht, einer Dosiereinrichtung zum Zuführen des Baumaterials 3 und einer Bestrahlungsvorrichtung zum Bestrahlen von Schichten des Baumaterials 3 an dem dem jeweiligen Querschnitt des Objektes entsprechenden Stellen, sowie einer Gaseindüsung 14, mit welcher ein Gasstrom 15 in die Prozesskammer 5 eingeführt und über die Bauebene 16 geführt wird, wobei der Gasstrom 15 wird der Prozesskammer 5 von einem Seitenbereich her über einen Diffusor 17 zugeführt, die Pulverbevorratung ist auf der gleichen Seite der Prozesskammer 5 wie der Diffusor 17 angeordnet und vom Gasstrom 15 abgeschirmt angeordnet, die Absaugung des Gasstroms 15 erfolgt auf der der Zuführung gegenüberliegenden Seite 18 der Prozesskammer 5 im Wesentlichen über deren gesamte Höhe H.The invention relates to a device 1 for producing three-dimensional objects by successively solidifying layers of a pulverulent building material 3 solidifiable by means of radiation 2 at the locations corresponding to the respective cross-section of the object, with a housing 4 in which a process chamber 5 is arranged, accommodated therein Installation space 6, in which a carrying device 7 is arranged for supporting the object with a height-adjustable support 8, a coating device 9 for applying layers of the building material 3 on the support device 7 or a previously formed layer, a metering device for supplying the building material 3 and an irradiation device for irradiating layers of the building material 3 at the locations corresponding to the respective cross-section of the object, and a gas injection 14, with which a gas stream 15 is introduced into the process chamber 5 and passed over the building plane 16, wherein the gas The powder supply is arranged on the same side of the process chamber 5 as the diffuser 17 and is shielded from the gas stream 15, the suction of the gas stream 15 takes place on the side opposite to the feed 18 of the process chamber 5 substantially over the entire height H.
Description
Die Erfindung betrifft eine Vorrichtung zum Herstellen von dreidimensionalen Objekten durch aufeinanderfolgendes Verfestigen von Schichten eines mittels Strahlung verfestigbaren pulverartigen Baumaterials an den dem jeweiligen Querschnitt des Objektes entsprechenden Stellen, mit den weiteren Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a device for producing three-dimensional objects by successive solidification of layers of a radiation-solidifiable powdery building material at the respective cross-section of the object corresponding points, with the further features of the preamble of claim 1.
Aus
Schließlich ist eine Gaseindüsung vorgesehen, mit welcher ein Gasstrom in die Prozesskammer eingeführt und über die Bauebene geführt werden kann, um dort auftretenden Schmauch abzuführen, damit Schmauch die für den Prozess verwendete Strahlung nicht negativ beeinträchtigt oder Fensterflächen und dgl. versetzt.Finally, a gas injection is provided, with which a gas stream can be introduced into the process chamber and passed over the building level to dissipate there occurring smoke, so that Schmauch does not adversely affect the radiation used for the process or window areas and the like.
Bei der bekannten Vorrichtung wird der seitlich eingedüste Gastrom, ein Schutzgasstrom zunächst nach unten und dann gegen die Eindüsrichtung zurück zu einer Schutzgasabgsaugung geführt.In the known device, the laterally injected gas stream, a protective gas stream is first performed down and then against the Eindüsrichtung back to a Schutzgasabgsaugung.
Der Erfindung hegt die Aufgabe zugrunde, eine Vorrichtung mit den Merkmalen des Oberbegriffes des Anspruches 1 derart auszubilden, dass der Anteil an potentiell durch Schmauch verunreinigtem Gasvolumen sinkt, Druckunterschiede in der Kammer und daraus resultierende Wirbel vermieden werden, optische Durchtrittsgläser durchspült und dadurch gereinigt werden und Turbulenzen im Volumenstrom reduziert werden. Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst, vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen 2–12.The invention has the object of providing a device with the features of the preamble of claim 1 in such a way that the proportion of potentially contaminated by smoke gas volume decreases, pressure differences in the chamber and resulting vortices are avoided, rinses optical transmission glasses and thereby cleaned and Turbulence in the flow can be reduced. This object is solved by the characterizing features of claim 1, advantageous developments of the invention will become apparent from the dependent claims 2-12.
Als Kern der Erfindung wird es angesehen, dass der Gasstrom der Prozesskammer von einem Seitenbereich her über einen Diffusor zugeführt wird, die Pulverbevorratung auf der gleichen Seite der Prozesskammer wie der Diffusor angeordnet ist und vom Gasstrom räumlich abgeschirmt ist und die Absaugung des Gasstromes auf der der Zuführung gegenüberliegenden Seite der Prozesskammer im Wesentlichen über deren gesamte Höhe erfolgt.As the gist of the invention, it is considered that the gas stream is supplied from the process chamber via a diffuser, the powder reservoir is arranged on the same side of the process chamber as the diffuser and is spatially shielded from the gas stream and the suction of the gas stream on the Feed the opposite side of the process chamber substantially over the entire height takes place.
Der dem Auslass des Gasstromes zugeordnete Diffusor sorgt zunächst einmal für einen relativ „sanften” Eintritt des Gasstromes in die Kammer, und zwar in vorteilhafter Weise im Wesentlichen über die gesamte Prozesskammerhöhe. Dadurch wird das Gasvolumen der Prozesskammer im Wesentlichen gleichmäßig seitlich ausgeschoben und über die gesamte Höhe der Prozesskammer abgesaugt. Die Pulverbevorratung ist vom Gasstrom abgeschottet, wodurch das Gesamtvolumen der Baukammer, das vom Gasstrom durchströmt wird, reduziert wird. Auch wird durch eine derartige Maßnahme vermieden, dass sich Schmauch auf den Pulvervorrat legt und diesen konterminiert.The diffuser associated with the outlet of the gas stream first of all provides for a relatively "gentle" entry of the gas stream into the chamber, advantageously substantially over the entire process chamber height. As a result, the gas volume of the process chamber is pushed out substantially uniformly laterally and is sucked off over the entire height of the process chamber. The powder storage is sealed off from the gas flow, whereby the total volume of the building chamber, which is flowed through by the gas flow, is reduced. It is also avoided by such a measure, that puts smoke on the powder supply and this konterminiert.
Erfolgt die Absaugung des die Prozesskammer im Wesentlichen gleichmäßig in eine Richtung durchsetzenden Volumenstromes über eine trichterartige Absaugvorrichtung, die sich über den wesentlichen Bereich der Prozesskammerhöhe erstreckt, wird eine negative Wirbelbildung im Bereich der Absaugseite der Prozesskammer vermieden.If the suction of the process chamber substantially uniformly in one direction passing through a volumetric flow through a funnel-like suction device, which extends over the substantial area of the process chamber height, a negative vortex formation in the suction side of the process chamber is avoided.
Die Zuführung des Gasstromes kann über ein Gitterelement erfolgen, das wie ein Gitterkasten auf der Gasstromführungsseite der Prozesskammer angeordnet ist und damit als Diffusor wirkt. Das Gitterelement bzw. der Gitterkasten erstreckt sich über einen wesentlichen Bereich der Prozesskammerhöhe auf der Gaseinlassseite und ermöglicht somit einen Austritt des Gasstromes in die Prozesskammer hinein in Richtung des gegenüberliegenden Absaugbereiches und schräg nach unten zum Baufeld. Der durch die Beschichtervorrichtung vom Gasstrom abgeschirmte Pulvervorrat ist auf der der Absaugvorrichtung abgewandten Seite des Gitterelementes angeordnet, mit anderen Worten vom Absaugelement weiter entfernt als der Gaseinlass, sodass der Pulvervorrat vom Gasstrom so gut wie nicht tangiert wird.The supply of the gas stream can take place via a grid element, which is arranged like a grid box on the gas flow guide side of the process chamber and thus acts as a diffuser. The grid element or the grid box extends over a substantial area of the process chamber height on the gas inlet side and thus allows the gas flow to exit into the process chamber in the direction of the opposite suction area and obliquely downward to the building field. The powder supply shielded from the gas flow by the coating apparatus is arranged on the side of the grid element facing away from the suction device, in other words further away from the suction element than the gas inlet, so that the powder supply is virtually unaffected by the gas flow.
Am Beschichter ist ein Gasleitelement vorgesehen, dass wie eine Trennwandung zwischen Pulvervorratskammer und Prozesskammer wirkt. Ein nach schräg unten aus dem Gitterelement austretender Gasstromanteil wird durch das am Beschichter angeordnete Gasleitelement zum Baufeld hingelenkt.A gas-conducting element is provided on the coater, which acts as a partition wall between powder reservoir chamber and process chamber. A gas stream component emerging obliquely downwards out of the grid element is directed to the building site by the gas guide element arranged on the coater.
Hinter dem Gitterelement sind eine oder mehrere verstellbaren, insbesondere rotierbaren Düsen angeordnet, um die Gaszuführung in den Diffusor hinein optimal einstellen zu können. Die Hauptaustrittsvorrichtung des Volumenstroms aus dem Gitterelement ist durch die wenigstens eine verstellbare Düse damit genau justierbar.Behind the grid element, one or more adjustable, in particular rotatable nozzles are arranged in order to optimally adjust the gas supply into the diffuser. The main outlet device of the volume flow from the grid element is thus precisely adjustable by the at least one adjustable nozzle.
Wie bereits erwähnt, ist der Pulvervorrat in einer mit der Prozesskammer zwar verbundenen jedoch abgeschotteten gesonderten Seitenkammer angeordnet, die beim Bauvorgang durch den Beschichter oder ein mit diesem verbundenes Leitelement abgeschlossen werden kann. As already mentioned, the powder supply is arranged in a separate side chamber which is connected to the process chamber but which is sealed off and which can be closed during the construction process by the coater or a guide element connected thereto.
Die Gaseinführung und Absaugung ist so eingestellt, dass die Strömungsgeschwindigkeit des Gasstroms über die Prozesskammer im Wesentlichen Konstant ist, dieser stetige die Prozesskammer in einer Richtung durchströmende Gasstrom wird dann im Bereich der trichterartigen Absaugvorrichtung auf der Absaugseite stetig und wirbelfrei zusammengeführt.The gas inlet and suction is adjusted so that the flow rate of the gas flow through the process chamber is substantially constant, this steady the gas flow in one direction through the process chamber is then converged steadily and vortex free in the funnel-like suction on the suction side.
Die Erfindung ist anhand eines Ausführungsbeispiels in der Zeichnungsfigur näher erläutert. Diese zeigt eine schematische Darstellung einer erfindungsgemäßen Vorrichtung.The invention is explained in more detail with reference to an embodiment in the drawing figure. This shows a schematic representation of a device according to the invention.
Die in der Zeichnung dargestellte Vorrichtung
Die Vorrichtung
Darüber hinaus ist eine Gaseindüsung
Der Gasstrom
Auch die Zuführung des Gasstroms
Die Zuführung des Gasstromes
Durch die Beschichervorrichtung
An der Beschichtervorrichtung
Im Innenbereich des kastenartigen Gitterelementes
Die Hauptaustrittsrichtung des Gasstromes
Die Dosierkammer
Die Strömungsgeschwindigkeit des Gasstromes
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Vorrichtungcontraption
- 22
- Strahlungradiation
- 33
- Baumaterialbuilding materials
- 44
- Gehäusecasing
- 55
- Prozesskammerprocess chamber
- 6 6
- Bauraumspace
- 77
- Tragevorrichtungcarrying device
- 88th
- Trägercarrier
- 99
- BeschichtervorrichtungBeschichtervorrichtung
- 1010
- Beschichterklingeapplication blade
- 1111
- Dosierkammermetering
- 1212
- Laserlaser
- 1313
- Scannerscanner
- 1414
- Gaseindüsunggas injection
- 1515
- Gasstromgas flow
- 1616
- Bauebenebuilding plane
- 1717
- Diffusordiffuser
- 2020
- Absaugvorrichtungsuction
- 2121
- Gitterelementgrid element
- 2222
- Gasleitelementgas guide
- 2323
- Düsejet
- 2424
- Seitenkammerside chamber
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102010052206 A1 [0002] DE 102010052206 A1 [0002]
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014000022.2A DE102014000022A1 (en) | 2014-01-03 | 2014-01-03 | Device for producing three-dimensional objects by successively solidifying layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014000022.2A DE102014000022A1 (en) | 2014-01-03 | 2014-01-03 | Device for producing three-dimensional objects by successively solidifying layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102014000022A1 true DE102014000022A1 (en) | 2015-07-09 |
Family
ID=53443100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102014000022.2A Pending DE102014000022A1 (en) | 2014-01-03 | 2014-01-03 | Device for producing three-dimensional objects by successively solidifying layers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102014000022A1 (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017102384A1 (en) * | 2015-12-14 | 2017-06-22 | Cl Schutzrechtsverwaltungs Gmbh | Device for the generative production of a three-dimensional object |
| US20180126649A1 (en) | 2016-11-07 | 2018-05-10 | Velo3D, Inc. | Gas flow in three-dimensional printing |
| EP3321009A1 (en) * | 2016-11-14 | 2018-05-16 | CL Schutzrechtsverwaltungs GmbH | Apparatus for additive manufacturing of three-dimensional objects |
| US10272525B1 (en) * | 2017-12-27 | 2019-04-30 | Velo3D, Inc. | Three-dimensional printing systems and methods of their use |
| US10286603B2 (en) | 2015-12-10 | 2019-05-14 | Velo3D, Inc. | Skillful three-dimensional printing |
| US10286452B2 (en) | 2016-06-29 | 2019-05-14 | Velo3D, Inc. | Three-dimensional printing and three-dimensional printers |
| US10315252B2 (en) | 2017-03-02 | 2019-06-11 | Velo3D, Inc. | Three-dimensional printing of three-dimensional objects |
| US10357957B2 (en) | 2015-11-06 | 2019-07-23 | Velo3D, Inc. | Adept three-dimensional printing |
| US10434573B2 (en) | 2016-02-18 | 2019-10-08 | Velo3D, Inc. | Accurate three-dimensional printing |
| WO2019197213A1 (en) * | 2018-04-13 | 2019-10-17 | Eos Gmbh Electro Optical Systems | Manufacturing device and method for additive manufacturing with movable gas outlet |
| US10449696B2 (en) | 2017-03-28 | 2019-10-22 | Velo3D, Inc. | Material manipulation in three-dimensional printing |
| WO2019209636A1 (en) * | 2018-04-24 | 2019-10-31 | General Electric Company | Additive manufacturing system and method |
| US10493564B2 (en) | 2014-06-20 | 2019-12-03 | Velo3D, Inc. | Apparatuses, systems and methods for three-dimensional printing |
| DE102018210260A1 (en) | 2018-06-22 | 2019-12-24 | Eos Gmbh Electro Optical Systems | Device and method for the generative production of a three-dimensional object |
| EP3599079A1 (en) * | 2018-07-25 | 2020-01-29 | Concept Laser GmbH | Apparatus for additively manufacturing three-dimensional objects |
| WO2020041460A1 (en) * | 2018-08-21 | 2020-02-27 | General Electric Company | Spacer flow guide for partitioning build chamber of an additive manufacturing system |
| US10611092B2 (en) | 2017-01-05 | 2020-04-07 | Velo3D, Inc. | Optics in three-dimensional printing |
| US11033968B2 (en) | 2015-07-23 | 2021-06-15 | Renishaw Plc | Additive manufacturing apparatus and a flow device for use with such apparatus |
| EP3369570B1 (en) | 2017-03-02 | 2021-08-25 | CL Schutzrechtsverwaltungs GmbH | Device for additive production of three-dimensional objects |
| CN113695603A (en) * | 2021-08-30 | 2021-11-26 | 威斯坦(厦门)实业有限公司 | High-temperature smoke and dust discharge system for 3D printer with spare air inlet |
| US11298716B2 (en) * | 2018-08-21 | 2022-04-12 | General Electric Company | Flow directing system and method for additive manufacturing system |
| DE102022121405A1 (en) * | 2022-08-24 | 2024-02-29 | Dmg Mori Additive Gmbh | Additive manufacturing device and additive manufacturing process |
| US11999110B2 (en) | 2019-07-26 | 2024-06-04 | Velo3D, Inc. | Quality assurance in formation of three-dimensional objects |
| US12070907B2 (en) | 2016-09-30 | 2024-08-27 | Velo3D | Three-dimensional objects and their formation |
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Cited By (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10493564B2 (en) | 2014-06-20 | 2019-12-03 | Velo3D, Inc. | Apparatuses, systems and methods for three-dimensional printing |
| US10507549B2 (en) | 2014-06-20 | 2019-12-17 | Velo3D, Inc. | Apparatuses, systems and methods for three-dimensional printing |
| US11033968B2 (en) | 2015-07-23 | 2021-06-15 | Renishaw Plc | Additive manufacturing apparatus and a flow device for use with such apparatus |
| EP3325240B1 (en) * | 2015-07-23 | 2025-04-02 | Renishaw PLC | Additive manufacturing apparatus and a gas flow device for use with such apparatus |
| US10357957B2 (en) | 2015-11-06 | 2019-07-23 | Velo3D, Inc. | Adept three-dimensional printing |
| US10688722B2 (en) | 2015-12-10 | 2020-06-23 | Velo3D, Inc. | Skillful three-dimensional printing |
| US10286603B2 (en) | 2015-12-10 | 2019-05-14 | Velo3D, Inc. | Skillful three-dimensional printing |
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| WO2017102384A1 (en) * | 2015-12-14 | 2017-06-22 | Cl Schutzrechtsverwaltungs Gmbh | Device for the generative production of a three-dimensional object |
| US11331726B2 (en) | 2015-12-14 | 2022-05-17 | Concept Laser Gmbh | Device for the generative production of a three-dimensional object |
| US10434573B2 (en) | 2016-02-18 | 2019-10-08 | Velo3D, Inc. | Accurate three-dimensional printing |
| US10286452B2 (en) | 2016-06-29 | 2019-05-14 | Velo3D, Inc. | Three-dimensional printing and three-dimensional printers |
| US12070907B2 (en) | 2016-09-30 | 2024-08-27 | Velo3D | Three-dimensional objects and their formation |
| US20180126649A1 (en) | 2016-11-07 | 2018-05-10 | Velo3D, Inc. | Gas flow in three-dimensional printing |
| US10661341B2 (en) | 2016-11-07 | 2020-05-26 | Velo3D, Inc. | Gas flow in three-dimensional printing |
| DE102016121770A1 (en) * | 2016-11-14 | 2018-05-17 | Cl Schutzrechtsverwaltungs Gmbh | Device for the additive production of three-dimensional objects |
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