公开(公告)号：WO2023042341A1

公开(公告)日：2023-03-23

申请号：PCT/JP2021/034121

申请日：2021-09-16

Applicant: 株式会社ニコン

Inventor： 舩津　貴行 ,  田中　幸次 ,  上野　和樹

IPC: B33Y10/00 ,  B33Y30/00 ,  B29C64/277 ,  B22F10/25 ,  B22F10/38 ,  B22F12/45 ,  B22F12/49

Abstract: 造形システムは、第１エネルギビームが第１位置に照射される第１時刻に、第２エネルギビームを、第１位置とは異なる第２位置に照射し、第１時刻と異なる第２時刻に、第１エネルギビームを、第１及び第２位置と異なる第３位置に照射し、第２時刻と異なる第３時刻に、第２エネルギビームを、第３位置に照射する。

公开(公告)号：WO2023023390A1

公开(公告)日：2023-02-23

申请号：PCT/US2022/041014

申请日：2022-08-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： MOOK, Joshua Tyler ,  STEELE, William Joseph ,  THOMPSON, Mary Kathryn ,  SIMMERMON, David Scott ,  GANSLER, Michael Thomas

IPC: B22F10/28 ,  B22F12/45 ,  B22F12/49 ,  B33Y10/00 ,  B33Y30/00 ,  B22F10/36 ,  B22F12/44

Abstract: An irradiation device for additively manufacturing three-dimensional objects may include a beam generation device configured to generate an energy beam, an optical modulator including a micromirror array disposed downstream from the beam generation device, and a focusing lens assembly disposed downstream from the optical modulator. The micromirror array may include a plurality of micromirror elements configured to reflect a corresponding plurality of beam segment of the energy beam along a beam path incident upon the focusing lens assembly. The focusing lens assembly may include one or more lenses configured to focus the plurality of beam segments such that for respective ones of a plurality of modulation groups including a subset of micromirror elements, a corresponding subset of beam segments are focused to at least partially overlap with one another at a combination zone corresponding to the respective modulation group.

公开(公告)号：WO2023003583A1

公开(公告)日：2023-01-26

申请号：PCT/US2021/062890

申请日：2021-12-10

Applicant: RAYTHEON COMPANY

Inventor： SMITH, Lisa M. ,  DAY, Nicholas C. ,  STEINBERG, Jacob H.

IPC: B22F10/28 ,  B22F10/31 ,  B22F10/38 ,  B22F12/45 ,  B23K26/042 ,  B23K26/342 ,  B29C64/153 ,  B29C64/277 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01N1/28 ,  G05B19/401

Abstract: A method includes controlling an additive manufacturing system (100) to fabricate a 3D structure (200, 200A-200D, 502, 602, 700, 800) using successive layers of material. The additive manufacturing system includes a build platform (110) having a first region (112, 114, 116, 118), second region (112, 114, 116, 118), and overlapping third region (102, 104, 106, 108) between the first and second regions; and multiple sources (916a-916d) configured to build (e.g., deposit, bond, melt, solidify) the successive layers of material in the regions of the build platform. Controlling the additive manufacturing system includes controlling the additive manufacturing system to build first, second, and third portions (202-206, 702-706, 802-806) of the 3D structure within the regions of the build platform. Each portion of the 3D structure includes (i) one or more test features (210a-210c, 212a-212c, 214a-214c, 216a-216c, 218a-218c, 220, 222a-222c, 224a-224c, 226a-226c, 228a-228c, 230a-230c, 232a-232c, 234a-234c, 236a-236c, 238a-238c, 240a-240c, 242a-242c, 244a-244c, 246a-246c, 248a-248c, 250a-250c) that are common to the portions of the 3D structure and (ii) a substrate (208) onto or into which the one or more common test features are formed.

公开(公告)号：WO2022161935A1

公开(公告)日：2022-08-04

申请号：PCT/EP2022/051588

申请日：2022-01-25

Applicant: TRUMPF LASER- UND SYSTEMTECHNIK GMBH

Inventor： RISSE, Jeroen ,  WAGNER, Joachim

IPC: B22F10/28 ,  B22F10/366 ,  B22F10/80 ,  B33Y10/00 ,  B33Y50/00 ,  B29C64/386 ,  B33Y30/00 ,  B22F10/38 ,  B22F10/85 ,  B22F12/45 ,  G06F30/00

Abstract: Die Erfindung betrifft eine Planungseinrichtung (19) zur Planung einer lokal selektiven Bestrahlung eines Arbeitsbereichs (11) mit einem Energiestrahl (7), um mittels des Energiestrahls (7) ein Bauteil (3) aus einem in dem Arbeitsbereich (11) angeordneten Pulvermaterial herzustellen, wobei die Planungseinrichtung (19) eingerichtet ist, um wenigstens einen Bestrahlungsparameter abhängig von einem Bestrahlungsort (17) auf dem Arbeitsbereich (11) zu bestimmen.

公开(公告)号：WO2021123744A1

公开(公告)日：2021-06-24

申请号：PCT/GB2020/053204

申请日：2020-12-14

Applicant: RENISHAW PLC

Inventor： ASWATHANARAYANASWAMY, Ravi, Guttamindapalli

IPC: B22F10/00 ,  B22F10/28 ,  B22F10/364 ,  B22F10/50 ,  B29C64/153 ,  B22F10/366 ,  B22F10/38 ,  B22F12/45 ,  B33Y10/00 ,  B33Y30/00 ,  C22C33/02

Abstract: A powder bed fusion additive manufacturing method in which an object is built in a layer-by-layer manner. The method comprises, for each layer of a plurality of successively fused layers, melting material of the layer by irradiating the layer with one or more energy beams a first time using a first set of irradiation parameters and allowing the melted material to solidify to define a fused region of the layer and reheating the fused region by irradiating the layer a subsequent time with one or more of energy beams using a second set of irradiation parameters. The first set of irradiation parameters comprises at least one different irradiation parameter to the second set of irradiation parameters.

公开(公告)号：WO2021003202A2

公开(公告)日：2021-01-07

申请号：PCT/US2020/040391

申请日：2020-07-01

Applicant: NIKON CORPORATION ,  PHILLIPS, Alton Hugh

Inventor： CHANG, Patrick Shih ,  BINNARD, Michael Birk ,  ROSA, Matthew ,  KETSAMANIAN, Serhad ,  GUO, Lexian ,  HERR, Brett William ,  GOODWIN, Eric Peter ,  MARQUEZ, Johnathan Agustin ,  BJORK, Matthew Parker-McCormick ,  COON, Paul Derek ,  ISHIKAWA, Motofusa

IPC: B22F3/105 ,  B29C64/241 ,  B29C64/245 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B29C64/268 ,  B29C64/371 ,  B22F12/37 ,  B22F10/28 ,  B22F12/00 ,  B22F10/31 ,  B22F12/226 ,  B22F12/38 ,  B22F12/41 ,  B22F12/45 ,  B22F12/90 ,  B22F2999/00 ,  B29C64/153

Abstract: To improve the operation of 3D printing systems, techniques are disclosed for a rotary 3D printer comprising: a main rotating support table rotating about a first axis and one or more secondary support tables rotating around a non-coaxial secondary axis; a powder supply assembly for distributing powder onto the tables; and an energy system for directing an energy beam at the powder to form a part. The main support table and secondary support tables can rotate in the same or opposite directions. Disclosed techniques include: grooved support table surfaces for improving stability of applied powder; reciprocating bellows for controlling a differential load on actuators that move the support tables; high temperature bearings or bushings for supporting rotary motion at high temperatures; and a mechanism for counterbalancing a weight of the part being built.

公开(公告)号：WO2022271453A1

公开(公告)日：2022-12-29

申请号：PCT/US2022/032785

申请日：2022-06-09

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION

Inventor： WALKER, Brandon, Joseph ,  MACKIE, Thomas, Rockwell ,  SCHUMACHER, Nathan, Donald

IPC: B22F10/28 ,  B22F12/50 ,  B22F12/00 ,  B22F12/41 ,  B22F12/30 ,  B22F10/80 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y70/00 ,  B22F12/20 ,  B22F12/37 ,  B22F12/45 ,  B33Y40/10

Abstract: High-throughput printing, possible with multiple electron beams, is facilitated by a continuous powder bed preparation process operating in parallel to apply and pre-sinter the powder along a continuous helical path. The sintered powder may be self-supporting to allow unconstrained expansion in the radial direction when high energy is used for powder fusion.

公开(公告)号：WO2022096819A1

公开(公告)日：2022-05-12

申请号：PCT/FR2021/051933

申请日：2021-11-03

Applicant: ADDUP ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) ,  UNIVERSITE PARIS-SACLAY

Inventor： MINEA, Tiberiu ,  WALRAND, Gilles ,  BALLAGE, Charles ,  ANTUNES, Vinicius

IPC: B22F10/28 ,  B22F12/90 ,  B29C64/153 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  G01N21/15 ,  G02B27/00 ,  B08B7/00 ,  B22F12/45

Abstract: La présente invention concerne une machine (1) de fabrication additive, comprenant : une enceinte (2); une source de faisceaux (20) d'énergie configurées pour balayer sélectivement un lit de poudre (3a) et le consolider; un élément optique (4) fixé dans l'enceinte (2) et réalisé dans un matériau transparent aux ondes électromagnétiques, l'élément optique (4) présentant une surface (5) sur laquelle un dépôt (7) issu d'une vaporisation du lit de poudre (3a) est susceptible de se former; et un système de nettoyage (8) de la surface (5) de l'élément optique (4) comprenant un générateur de plasma (11), le générateur de plasma (11) comprenant une électrode de puissance (9), placée en vis-à-vis d'une surface opposée (6) de l'élément optique, (4) et une électrode de masse (10) configurées pour générer un plasma (11) par couplage capacitif à proximité de la première surface (5).

公开(公告)号：WO2022096304A1

公开(公告)日：2022-05-12

申请号：PCT/EP2021/079515

申请日：2021-10-25

Applicant: SLM SOLUTIONS GROUP AG

Inventor： GAUZER, Vera ,  BRÜCK, Daniel ,  PRELL, Jonas ,  NEUMANN, Karsten

IPC: B22F10/28 ,  B22F12/00 ,  B22F12/70 ,  B33Y30/00 ,  B22F12/45

Abstract: An apparatus (10) for producing a three-dimensional work piece (46) by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises a process chamber (16) accommodating a carrier (12) and a powder application device (14) for applying a layer of raw material powder onto the carrier (12). The apparatus (10) further comprises an irradiation unit (26) for selectively irradiating the layer of raw material powder with electromagnetic or particle radiation in accordance with a geometry of a corresponding layer of the work piece (18) to be produced. An absorption device (50) which is adapted to absorb heat radiation emitted upon selectively irradiating the layer of raw material powder with electromagnetic or particle radiation is provided in the process chamber (16) and/or in the irradiation unit (26) at such a position that it is capable of absorbing radiation occurring in an interior of the process chamber (16) and/or in an interior of the irraditation unit (26).

公开(公告)号：WO2022073785A1

公开(公告)日：2022-04-14

申请号：PCT/EP2021/076485

申请日：2021-09-27

Applicant: TRUMPF LASER- UND SYSTEMTECHNIK GMBH

Inventor： MEINERS, Wilhelm ,  LEUCK, Sarah

IPC: B22F10/366 ,  B22F10/28 ,  B22F10/85 ,  B22F12/45 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/073

Abstract: Die Erfindung betrifft eine Planungseinrichtung (15) zur Planung einer lokal selektiven Bestrahlung eines Arbeitsbereichs (11) mit einem Energiestrahl (7), um mittels des Energiestrahls (7) ein Bauteil (3) aus einem in dem Arbeitsbereich (11) angeordneten Pulvermaterial herzustellen, wobei die Planungseinrichtung (15) eingerichtet ist, um eine Mehrzahl von Bestrahlungsvektoren (21) zur Bestrahlung einer in dem Arbeitsbereich (11) angeordneten Pulvermaterialschicht mit dem Energiestrahl (7) zu erhalten, wobei die Planungseinrichtung (15) eingerichtet ist, um für mindestens einen Bestrahlungsvektor (21) der Mehrzahl von Bestrahlungsvektoren (21) eine Vektor-Ausrichtung in einem Koordinatensystem auf dem Arbeitsbereich (11) zu bestimmen, und wobei die Planungseinrichtung (15) eingerichtet ist, um für den mindestens einen Bestrahlungsvektor (21) eine Strahl-Ausrichtung für eine von einer Kreisform abweichende Strahlform (18) des Energiestrahls (7) auf dem Arbeitsbereich (11) relativ zu der Vektor-Ausrichtung des mindestens einen Bestrahlungsvektors (21) vorzugeben.