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公开(公告)号:WO2023043433A1
公开(公告)日:2023-03-23
申请号:PCT/US2021/050310
申请日:2021-09-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P
Inventor: WRIGHT, Jacob Tyler , LEYVA MENDIVIL, Maria Fabiola , KOTHARI, Sunil , CHEN, Lei , WYCOFF, Kyle Douglas , CATANA SALAZAR, Juan Carlos , ZENG, Jun
IPC: B29C64/393 , B22F12/90 , C09D11/03 , G06T1/40 , G06T15/08 , G06T19/20 , B33Y10/00 , B33Y50/02 , B22F10/31 , C09D11/50 , G06T1/20
Abstract: Examples of methods are described. In some examples, a method may include dispensing a thermochromic dye. In some examples, the thermochromic dye may be dispensed on a fusing layer of a build volume. In some examples, the method may include measuring a temperature of the fusing layer indicated by an optical image of the thermochromic dye.
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公开(公告)号:WO2022194617A1
公开(公告)日:2022-09-22
申请号:PCT/EP2022/055864
申请日:2022-03-08
Applicant: TRUMPF LASER- UND SYSTEMTECHNIK GMBH
Inventor: WALDHERR, Gerald , PETERS, Julia , HAIBL, Fabian
IPC: B22F10/28 , B22F10/37 , B22F10/85 , B22F12/90 , B29C64/153 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B22F10/31 , B22F12/57
Abstract: Es wird ein Verfahren zum Messen eines Auftragsverhaltens von Pulver (3) in einem Baubereich (11) einer Vorrichtung zur generativen Fertigung (1) mit den folgenden Schritten offenbart: - Bereitstellen einer planen Oberfläche (57) im Baubereich (11), die bezüglich einer Arbeitsfläche (9) um einen vorgegebenen Messhub (HM) abgesenkt ist, - Ausgeben einer vorgegebenen Zustellmenge (52_A) von Pulver von einem Pulvervorratsbehälter (23) zur Verteilung mit einem Beschichter (25), - Verteilen der ausgegebenen Zustellmenge (52_A) von Pulver durch Verfahren des Beschichters (25) in einer Fahrtrichtung (x), wodurch sich auf der planen Oberfläche (57) eine Messpulverschicht (60) ausbildet, und - Messen einer ortsabhängigen Verteilung eines Pulverauftrags (Pc(y)_A) der aufgetragenen Messpulverschicht (60). Eine genaue Kenntnis der ortsabhängigen Pulverauftragsmengen ermöglicht eine Pulverzustellung, die an einen schichtspezifischen Pulverbedarf, insbesondere an berechnete ortsabhängige Pulverbedarfsmengen, angepasst werden kann.
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公开(公告)号:WO2022215056A1
公开(公告)日:2022-10-13
申请号:PCT/IB2022/053374
申请日:2022-04-11
Inventor: BARROS MATOS, João Rui , DE GALHANO TENREIRO, António Francisco , HENRIQUES CAMÕES SOBRAL, João Pedro , GERALDES TOURO PEREIRA, João Paulo , DA QUINTA E COSTA NEVES DE OLIVEIRA, Luis Miguel , RODRIGUES DIAS ESTEVES, Sílvia Alexandra , TORRES MARQUES, António
IPC: B29C64/118 , B22F10/18 , B22F10/31 , B22F12/90 , B29C64/393 , B33Y10/00 , B33Y50/02
Abstract: The present disclosure relates to a device for controlling using thermography of a fused deposition modelling, FDM, printer arranged for printing layers of a fused thermoplastic by executing predetermined deposition movement commands comprised in a data record, comprising an infrared camera for acquiring a temperature image of printed layers, and an electronic data processor configured for: acquiring a temperature image of a previously deposited layer, determining the temperature of pixels of the acquired temperature image, calculating a feedrate adjustment, from the determined temperature of said pixels, for the deposition movement commands for depositing a new layer; applying the calculated feedrate adjustment to the deposition movement commands for depositing the new layer.
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公开(公告)号:WO2022180348A1
公开(公告)日:2022-09-01
申请号:PCT/GB2022/000018
申请日:2022-02-11
Applicant: WAYLAND ADDITIVE LIMITED
Inventor: LEES, Andrew Thomas , SHUTTLEWORTH, Harry Kenneth
IPC: B22F10/28 , B22F10/31 , B22F10/37 , B22F10/85 , B22F12/90 , B29C64/153 , B29C64/188 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02
Abstract: A method of monitoring and influencing an additive layer manufacturing process, in which selective fusing of powder material in successively applied layers is carried out to manufacture a three-dimensional article, comprises delivery to a work space, for example in a vacuum chamber (12) of electron beam additive layer manufacturing apparatus (10), of a quantity of the powder material in excess of that required to form a layer of a given volume in a build zone of the space and spreading the powder material within the work space by a spreader (17) to form the layer in the build zone and also an accumulation of excess powder material in an accumulation zone adjoining the build zone. Spreading is repeated to form successive such layers and accumulations and the volume of each accumulation is determined by imaging, along an optical path (B), of a structured light pattern which has been projected along an optical path (A), onto the respective accumulation from an imaging direction different from the projection direction so as to result in distortion of the pattern by the accumulation. The imaged pattern is then able to be evaluated to derive the volume of the accumulation from the distortion and the determined volumes of the accumulations are utilised to influence the additive layer manufacturing process.
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公开(公告)号:WO2022026016A1
公开(公告)日:2022-02-03
申请号:PCT/US2021/030647
申请日:2021-05-04
Applicant: INKBIT, LLC
Inventor: MATUSIK, Wojciech , WEBER, Aaron , CHEN, Desai , WANG, Harrison
IPC: B29C64/393 , B29C64/106 , B22F10/31 , B22F12/90 , B33Y50/02 , B33Y30/00 , B22F12/53 , B22F12/55
Abstract: A method for additive fabrication includes determining numerical calibration transforms for calibrating an imaging sensor and a printhead assembly to a common coordinate system, where at least some of the numerical calibration transforms include nonlinear transforms.
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公开(公告)号:WO2021224099A1
公开(公告)日:2021-11-11
申请号:PCT/EP2021/061246
申请日:2021-04-29
Applicant: TRUMPF SISMA S.R.L , TRUMPF LASER- UND SYSTEMTECHNIK GMBH
Inventor: CAVALCABO, Guglielmo , MANTOAN, Elia , BLICKLE, Valentin , SAILER, Christof , KRAUTER, Johann
IPC: B29C64/153 , B29C64/282 , B29C64/393 , B33Y10/00 , B33Y50/02 , B22F10/28 , B22F10/31 , B22F12/45 , B29C64/268 , B33Y30/00
Abstract: A method of automated alignment of scanning optics (17A, 17B) includes the steps: irradiating (step 101) an object area (3 A) of a layer of a powdered material (5) provided on a building platform (11) with at least one irradiation beam (15B); irradiating (step 103) a calibration area (21A) of the layer of the powdered material (5) with at least one irradiation beam (15B); guiding (step 105 A) the first irradiation beam (15 A) with the first scanning optic (17A) over the intermediate top face (31) and thereby melting a first calibration pattern (37) into the intermediate top face (31); guiding (step 105B) the second irradiation beam (15B) with the second scanning optic (17B) over the intermediate top face (31) and thereby melting a second calibration pattern (39) into the intermediate top face (31); acquiring (step 107) at least one image (35, 51A, 51B) of the intermediate top face (31); using the at least one image (35, 51 A, 51B), identifying (step 109) image points related to the geometrical features of the calibration patterns; from the image points, deriving (step 111) a spatial offset (O) between the second geometrical features; and aligning (step 113) at least one of scanning optic (17A) under consideration of the spatial offset (O).
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公开(公告)号:WO2021165145A1
公开(公告)日:2021-08-26
申请号:PCT/EP2021/053375
申请日:2021-02-11
Applicant: REALIZER GMBH
Inventor: REDLER, Andreas , TEPPER, Meinolf , ISENBERG, Daniel
Abstract: Die vorliegende Erfindung betrifft unter anderem ein Verfahren zum Kalibrieren einer Anlage (10) zum Herstellen von Gegenständen aus einem Werkstoffpulver nach der Methode des selektiven Pulverschmelzens, wobei die Anlage (10) umfasst: einen Bauraum (22), welcher dazu vorgesehen ist, das aufzuschmelzende Pulver und den herzustellenden Gegenstand aufzunehmen; eine in dem Bauraum (22) in einer höhenverlagerbaren Weise vorgesehene Bauplattenhalterung (24), welche dazu vorgesehen ist, eine Bauplatte mit dem herzustellenden Gegenstand darauf zu tragen; und eine steuerbare Optikeinheit (20), wiederum umfassend eine Laserquelle (18), eine Mehrzahl von Linsen (16) und eine Spiegelanordnung mit einer Mehrzahl von einstellbar angeordneten Spiegeln (14), welche dazu eingerichtet ist, einen von der Laserquelle (18) ausgestrahlten Laserstrahl (L) selektiv auf einen Punkt (S) in dem Bauraum zu richten, an welchem das Werkstoffpulver aufzuschmelzen ist. Hierbei umfasst das Verfahren die folgenden Schritte: Platzieren einer Scanfeldplatte (26) auf der Bauplattenhalterung (24) in dem Bauraum (22); Erstellen einer Mehrzahl von optischen Referenzpunkten auf der Scanfeldplatte (26) an vordefinierten Positionen mit Hilfe der steuerbaren Optikeinheit (20); Erstellen eines Messrasters (M) auf der Scanfeldplatte (26) mit Hilfe der steuerbaren Optikeinheit (20) durch entsprechendes Einstellen der Spiegel (14) der Spiegelanordnung anhand eines Kalibrierungsdatensatzes; und Bestimmen der relativen Positionierungen zwischen den optischen Referenzpunkten und dem Messraster.
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公开(公告)号:WO2023068268A1
公开(公告)日:2023-04-27
申请号:PCT/JP2022/038762
申请日:2022-10-18
Applicant: 株式会社プロテリアル
Inventor: オズマ スティーブン ジェームズ , 川中 啓嗣 , 松下 慎二 , 朴 ミンソク , 保田 雄亮
IPC: B22F10/80 , B22F10/16 , B22F10/25 , B22F10/28 , B22F10/31 , B22F10/60 , B22F10/66 , B22F10/85 , B33Y10/00 , B33Y50/02
Abstract: ベースプレートから切り離した状態で付加製造試験体の残留応力による変形を正確に評価できる付加製造試験体の変形部の変形量の測定方法を提供することを目的とする。 付加製造試験体の変形部の変形量の測定方法は、金属粉末を用いて所定条件で付加製造を行うことにより、ベースプレートの上面の面方向に並ぶ基準部及び変形部並びにこれらを一体化する接続部を有する付加製造試験体を、前記基準部及び前記変形部並びに前記接続部が前記ベースプレートの前記上面に接合するように前記ベースプレートの前記上面に製造する製造工程と、前記付加製造試験体を前記ベースプレートの前記上面から切り離す切り離し工程と、前記ベースプレートの前記上面から切り離された前記付加製造試験体について、前記基準部を基準とする前記変形部の変形量を測定する測定工程と、を備えることを特徴とする。
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公开(公告)号:WO2022240397A1
公开(公告)日:2022-11-17
申请号:PCT/US2021/031880
申请日:2021-05-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: In an example, a method includes generating a plurality of calibration objects, each in a different region of a fabrication chamber of an additive manufacturing apparatus. In some examples the method further includes obtaining a measurement of a physical property of each calibration object. The method may include determining, by processing circuitry, calibrated print agent coverage amounts for each region based on the measured physical properties of the calibration objects wherein the calibrated print agent coverage amounts are to be used in a subsequent object generation operation.
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公开(公告)号:WO2022216991A1
公开(公告)日:2022-10-13
申请号:PCT/US2022/023919
申请日:2022-04-07
Applicant: EDISON WELDING INSTITUTE, INC.
Inventor: REAM, Stanley L. , WALTERS, Craig T. , HAY, Jacob
IPC: B33Y40/00 , B22F10/20 , B22F10/31 , B33Y30/00 , B29C64/153 , B33Y50/02 , B29C64/273 , B33Y10/00
Abstract: A testing apparatus for use with a laser processing system that includes a laser for generating a non-stationary laser beam and a work plane positioned at a working distance relative to the non-stationary laser beam, wherein the testing apparatus includes a support tube; a protective window mounted in the support tube for protecting components mounted within the support tube; a reimaging lens mounted in the support tube for enlarging the non-stationary laser beam for characterization thereof; a pin-hole defining structure mounted in the support tube for receiving laser light generated by the laser beam, wherein the pin-hole is located at a predetermined distance from the reimaging lens; a fiber optic cable disposed within the pin-hole defining structure that has a proximal end at which the laser light is received through the pin-hole and a distal end to which the laser light is delivered; and a photodetector located at the distal end of the fiber optic cable.
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