公开(公告)号：US20210237158A1

公开(公告)日：2021-08-05

申请号：US17049770

申请日：2019-04-23

Applicant: Materialise N.V.

Inventor： Michele PAVAN ,  Piet VAN DEN ECKER ,  Tom CRAEGHS

IPC: B22F10/366 ,  B22F10/28 ,  B22F10/85 ,  B22F12/13 ,  B22F12/41 ,  B22F12/49 ,  B22F10/73 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y50/02

Abstract: The present disclosure relates to computer-implemented methods for tuning parameters associated with powder bed fusion processes of additive manufacturing, such as laser sintering. Disclosed herein are methods for determining scanning strategies on the basis of information about the build material, additive manufacturing apparatus, and desired or intended features of the part.

公开(公告)号：US11079580B2

公开(公告)日：2021-08-03

申请号：US15771261

申请日：2016-10-28

Applicant: EOS GmbH Electro Optical Systems

Inventor： Hans Perret ,  Stephan Gronenborn

IPC: G02B13/00 ,  G02B19/00 ,  B41J2/45 ,  G02B13/22 ,  G03F7/20 ,  B22F12/00 ,  B29C64/264 ,  B33Y30/00 ,  B29C64/153 ,  B29C64/268 ,  B22F10/10 ,  B22F12/40 ,  B22F12/49 ,  B33Y10/00 ,  B23K26/06

Abstract: An exposure optics serves as an equipping and/or retrofitting optics for a device for producing a three-dimensional object by selectively solidifying building material, layer by layer. The exposure optics includes at least a first object-sided lens system having a first focal length f1 and a second image-sided lens system having a second focal length f2, which lens systems can be arranged in the beam path of the radiation emitted by the radiation source. The focal plane of the first lens system and the focal plane of the second lens system coincide in a plane between the two lens systems. The focal length f1 of the first lens system is equal to or greater than the focal length f2 of the second lens system. The exposure optics is designed and can be arranged such that the electromagnetic radiation is incident substantially perpendicular on the working surface.

公开(公告)号：US20210178481A1

公开(公告)日：2021-06-17

申请号：US17050250

申请日：2019-04-19

Applicant: AddUp

Inventor： GILLES WALRAND ,  FRANCK DENAVIT

IPC: B22F10/366 ,  B22F10/28 ,  B23K26/082 ,  B23K26/354 ,  B28B1/00 ,  B23K26/06 ,  B22F12/49 ,  B22F12/90 ,  B22F10/85

Abstract: An apparatus for manufacturing a three-dimensional object by selective additive manufacturing comprises: a support (140) suitable for supporting at least one layer (150) of additive manufacturing powder, a laser source (110) suitable for emitting a laser beam (111), a scanning device (130) suitable for directing the laser beam onto the powder layer so as to scan at least a portion of the powder layer, and a device (120) for modulating the scanning trajectory, arranged upstream of the scanning device, the modulating device comprising a modulating mirror (121) suitable for reflecting the laser beam emitted by the laser source and for directing it towards the scanning device, the angle of incidence of the laser beam emitted by the laser source on the modulating mirror being between 20 and 45°.

公开(公告)号：US20250065406A1

公开(公告)日：2025-02-27

申请号：US18718970

申请日：2023-01-20

Applicant: NIKON SLM SOLUTIONS AG

Inventor： Philipp Rohse

IPC: B22F10/31 ,  B22F10/28 ,  B22F12/45 ,  B22F12/49 ,  B22F12/90

Abstract: A method for calibrating an irradiation system (10) for use in an apparatus (100) for producing a three-dimensional work piece is described. The method comprising the step of i) setting a distance between a calibration plane (30) and an optical unit (16) of the irradiation system (10) in a z-direction perpendicular to the calibration plane (30) to a first distance (z1). In a step ii), while maintaining the distance between the calibration plane (30) and the optical unit (16) at the first distance (z1), a first calibration pattern (p1,1) is irradiated in a first x-y region (a1) within the calibration plane (30) with a scanner mirror (22) of the optical unit (16) being arranged in a first angular basic position. A second calibration pattern (p2,1) is irradiated in a second x-y region within the calibration plane (30) with the scanner mirror (22) of the optical unit (16) being arranged at a second angular basic position in which the scanner mirror (22) is pivoted relative to the first angular basic position by at least ±1°. In a step iii) the distance between the calibration plane (30) and the optical unit (16) in the z-direction is set to a second distance (z2) different from the first distance (z1). In a step iv), while maintaining the distance between the calibration plane (30) and the optical unit (16) at the second distance (22), a third calibration pattern (p1,2) is irradiated in the first x-y region (a1) with the scanner mirror (22) of the optical unit (16) being arranged in the first angular basic position, and a fourth calibration pattern (p2,2) is irradiated in the second x-y region (a2) with the scanner mirror (22) of the optical unit (16) being arranged in the second angular basic position. In a step v) the first, the second, the third and the fourth calibration pattern (p1,1, p2,1, p1,2, p2,2) are evaluated so as to determine focus positions of the radiation beam (14) in the z-direction in dependence on an x-y position within the calibration plane (30). In a step vi) the irradiation system (10) is calibrated based on the determined focus positions of the radiation beam (14).

公开(公告)号：US20250025942A1

公开(公告)日：2025-01-23

申请号：US18574985

申请日：2022-06-30

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Ryuichi Narita ,  Masashi Kitamura ,  Shuji Tanigawa

IPC: B22F12/49 ,  B28B1/00 ,  B33Y30/00

Abstract: An additive manufacturing method according to one or more embodiments includes a step for feeding a raw-material powder and forming a layer of the raw-material powder and a step for irradiating the layer with a light beam to cause the raw-material powder in the layer to melt and solidify, and thereby molding a part of a molded object. In the molding step, the beam diameter of the light beam on the molding surface is changed partway through molding, within the same layer.

公开(公告)号：US12172377B2

公开(公告)日：2024-12-24

申请号：US16550216

申请日：2019-08-24

Applicant: Nuburu, Inc.

Inventor： Mark S. Zediker ,  Ian Lee ,  Jean Michel Pelaprat ,  Eric Boese ,  Mathew Finuf

IPC: B29C64/268 ,  B22F10/28 ,  B22F10/32 ,  B22F10/36 ,  B22F10/366 ,  B22F12/13 ,  B22F12/17 ,  B22F12/20 ,  B22F12/41 ,  B22F12/44 ,  B22F12/45 ,  B22F12/49 ,  B22F12/55 ,  B22F12/90 ,  B23K26/06 ,  B23K26/12 ,  B23K26/70 ,  B29C64/153 ,  B33Y30/00

Abstract: A high-resolution additive manufacturing system based on a parallel printing method using a spatial light modulator. A method and system for additive manufacturing using a DMD in the laser beam path. The use of a pre-heat laser beam in combination with a build laser beam having a DMD along the build laser beam path.

公开(公告)号：US12162222B2

公开(公告)日：2024-12-10

申请号：US17944374

申请日：2022-09-14

Applicant: EOS GmbH Electro Optical Systems

Inventor： Michael Prexler ,  Martin Schade

IPC: B29C64/393 ,  B22F10/20 ,  B22F10/25 ,  B22F10/30 ,  B22F10/31 ,  B22F10/366 ,  B22F12/13 ,  B22F12/44 ,  B22F12/45 ,  B22F12/49 ,  B22F12/90 ,  B29C64/153 ,  B29C64/268 ,  B29C64/277 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A calibration method serves for calibrating a manufacturing device for additively producing a three-dimensional object by applying layer by layer and selectively solidifying a building material. The manufacturing device comprises at least two scanning units, each of which is capable of directing a beam to different target points in the working plane, which are located within a scanning region assigned to the respective scanning unit, wherein the scanning regions region of the at least two scanning units overlap in an overlap area. At least a first of the at least two scanning units is assigned a first monitoring unit whose monitoring region extends to a target point of the first scanning unit and its proximity, wherein a change of a position of the monitoring region is carried out as a function of a change of a position of the target point.

公开(公告)号：US20240326159A1

公开(公告)日：2024-10-03

申请号：US18632398

申请日：2024-04-11

Applicant: General Electric Company

Inventor： Xiaolei Shi

IPC: B23K26/03 ,  B22F10/28 ,  B22F10/31 ,  B22F10/36 ,  B22F12/45 ,  B22F12/49 ,  B22F12/90 ,  B23K26/06 ,  B23K26/064 ,  B23K26/082 ,  B23K26/342 ,  B33Y30/00 ,  B33Y50/00

CPC classification number: B23K26/032 ,  B22F10/28 ,  B22F10/31 ,  B22F12/45 ,  B22F12/49 ,  B22F12/90 ,  B23K26/0608 ,  B23K26/064 ,  B23K26/082 ,  B23K26/342 ,  B33Y30/00 ,  B33Y50/00 ,  B22F10/36

Abstract: An additive manufacturing system includes a build platform and at least two laser heads. Each laser head includes at least one laser device, an optical sensor, and a computing device. The build platform includes a plurality of calibration marks. The laser device is configured to generate a laser beam. The laser beam is directed toward the plurality of calibration marks and the build platform. The optical sensor is configured to detect a scattering signal of the laser beam generated by reflecting off of the plurality of calibration marks and the build platform. The computing device is configured to receive the scattering signal from the optical sensor. The computing device is configured to align the laser heads such that the scattering signal aligns with the plurality of calibration marks and such that the laser heads align with each other.

公开(公告)号：US12103079B2

公开(公告)日：2024-10-01

申请号：US17416185

申请日：2019-03-04

Applicant: Arcam AB

Inventor： Jonas Hellgren

IPC: B22F12/49 ,  B22F10/28 ,  B22F10/366 ,  B22F10/85 ,  B22F12/90 ,  B23K26/03 ,  B23K26/046 ,  B23K26/06 ,  B23K26/08 ,  B23K26/082 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  H04N7/18

CPC classification number: B22F12/49 ,  B22F10/28 ,  B22F10/366 ,  B23K26/032 ,  B23K26/046 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  H04N7/18 ,  B22F10/85 ,  B22F12/90 ,  B23K26/0665 ,  B23K26/082 ,  B23K26/083

Abstract: An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts corresponds to successive cross sections of the three-dimensional article, the apparatus comprising: a powder distributor configured for evenly distributing a layer of powder on top of a work table provided inside a build chamber; and at least one high energy beam source emanating at least one high energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, wherein the apparatus further comprising at least one target area arranged spaced apart from the layer of powder for emanating light when irradiated by the at least one high energy beam.

公开(公告)号：US12103076B2

公开(公告)日：2024-10-01

申请号：US17865632

申请日：2022-07-15

Applicant: JEOL Ltd.

Inventor： Nari Tsutagawa ,  Takashi Sato ,  Yohei Daino ,  Kozo Koiwa ,  Yuhei Kaneko ,  Masahiko Kawakami

IPC: B22F10/362 ,  B22F10/28 ,  B22F10/366 ,  B22F12/41 ,  B22F12/49 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B22F10/362 ,  B22F10/28 ,  B22F10/366 ,  B22F12/41 ,  B22F12/49 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00

Abstract: An apparatus includes a build plate, a powder application apparatus that applies metal powder onto the build plate to form a powder layer, a beam irradiation apparatus that irradiates the powder layer with an electron beam, and a control unit that controls the powder application apparatus and the beam irradiation apparatus. When the powder layer is preheated by irradiation with the electron beam, the control unit sets a beam size and an irradiation position of the electron beam such that lines of the electron beam do not overlap each other at least at a start of preheating, and controls the beam irradiation apparatus to gradually increase at least one of a beam current and the beam size of the electron beam from the start of preheating to an end of preheating.