公开(公告)号：US09782933B2

公开(公告)日：2017-10-10

申请号：US14618748

申请日：2015-02-10

Applicant: Arcam AB

Inventor： Daniel Jonasson ,  Morgan Larsson ,  Ulf Ackelid ,  Anders Snis ,  Tomas Lock

IPC: B29C64/393 ,  B29C67/00 ,  B22F3/105 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B33Y30/00 ,  B29L9/00

CPC classification number: B29C64/20 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2999/00 ,  B29C64/153 ,  B29C64/386 ,  B29C64/393 ,  B29L2009/00 ,  B33Y30/00 ,  Y02P10/295 ,  B22F2203/03

Abstract: The invention concerns an apparatus (1) for producing three-dimensional objects (6) layer by layer using a powdery material which can be solidified by irradiating it with a beam (4) of charged particles, said apparatus (1) comprising means for successive application of powder layers to a work table, and a radiation gun (3) for delivering said beam (4) of charged particles, wherein the inventive apparatus (1) comprises a powder-lifting detection device (10, 10a, 10b, 10c, 10d, 10e) capable of generating a signal (S) upon detection of lifting of powdery material from the working area (5).

公开(公告)号：US20170189964A1

公开(公告)日：2017-07-06

申请号：US15466212

申请日：2017-03-22

Applicant: Arcam AB

Inventor： Johan Backlund ,  Tomas Lock

IPC: B22F3/105 ,  B23K15/02 ,  B23K26/06 ,  B23K15/00 ,  B23K26/342 ,  B23K26/70

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B23K15/0013 ,  B23K15/0086 ,  B23K15/02 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/0732 ,  B23K26/0738 ,  B23K26/342 ,  B23K26/702 ,  B28B1/001 ,  B28B17/0081 ,  B29C64/153 ,  B29C64/386 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G02B27/0911 ,  Y02P10/295

Abstract: Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

公开(公告)号：US12257626B2

公开(公告)日：2025-03-25

申请号：US17348312

申请日：2021-06-15

Applicant: ARCAM AB

Inventor： Tomas Lock ,  Björn Löfving

IPC: B22F10/31 ,  B22F10/80 ,  B22F12/41 ,  B23K15/00 ,  B33Y30/00 ,  B33Y50/00 ,  G01J5/00 ,  G01J5/20 ,  G01N25/02 ,  G01N25/04 ,  G01N25/72

Abstract: Devices, systems, and methods for calibrating for an electron beam additive manufacturing system. The electron beam manufacturing system includes electron beam guns. A calibration system includes an optical pyrometer. The optical pyrometer captures thermal radiation emitted from raw material. An analysis component is communicatively coupled to the optical pyrometer. The analysis component is programmed to determine calibration parameters from information from the optical pyrometer and a phase transition temperature.

公开(公告)号：US10821517B2

公开(公告)日：2020-11-03

申请号：US16040841

申请日：2018-07-20

Applicant: ARCAM AB

Inventor： Johan Backlund ,  Tomas Lock

IPC: B23K15/00 ,  B23K26/342 ,  B23K26/34 ,  B22F3/105 ,  B23K26/06 ,  B23K26/073 ,  G02B27/09 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B28B1/00 ,  B28B17/00 ,  B23K26/70 ,  B23K15/02 ,  B29K105/00

Abstract: Provided is an apparatus that includes a high energy beam configured to make a first weld at a first position on a workpiece; at least one deflection lens configured to deflect the high energy beam so as to cause the high energy beam to make a second weld at a second position; at least one focusing lens configured to focus the high energy beam; at least one astigmatism lens; and at least one controller. The controller is configured to shape the high energy beam so that the shape of the high energy beam on the workpiece is longer in a direction parallel to a deflection direction of the high energy beam than in a direction perpendicular to the deflection direction of the high energy beam. A length ratio is varying as a function of the power of the energy beam, while the width in the perpendicular direction is constant.

公开(公告)号：US10586683B2

公开(公告)日：2020-03-10

申请号：US15630199

申请日：2017-06-22

Applicant: Arcam AB

Inventor： Tomas Lock

IPC: H01J37/304 ,  H01J37/305 ,  H01J37/244 ,  B23K15/00 ,  G01T1/29 ,  B33Y50/02 ,  B29C64/386 ,  H01J37/30 ,  B29C64/20 ,  B29C64/153 ,  B33Y10/00 ,  B33Y40/00 ,  B22F3/105 ,  B23K15/02 ,  B28B1/00 ,  B28B17/00 ,  H01J37/317 ,  H01J37/09 ,  B33Y30/00

Abstract: A device for detecting X-rays radiated out of a substrate surface, said device comprising at least one X-ray detector, a resolver grating and a modulator grating, said resolver grating with at least one opening facing towards said X-ray detector is arranged in front of said X-ray detector. Said modulator grating is provided between said resolver grating and said substrate at a predetermined distance from said resolver grating and said substrate, where said modulator grating having a plurality of openings in at least a first direction, wherein said x-rays from said surface is spatially modulated with said modulator grating and resolver grating.

公开(公告)号：US20180369916A1

公开(公告)日：2018-12-27

申请号：US16052365

申请日：2018-08-01

Applicant: Arcam AB

Inventor： Johan Backlund ,  Tomas Lock

IPC: B22F3/105 ,  G02B27/09 ,  B23K15/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B28B17/00 ,  B28B1/00 ,  B23K26/073 ,  B23K26/06 ,  B23K15/02 ,  B33Y10/00 ,  B29C64/386 ,  B29C64/153 ,  B23K26/70 ,  B29K105/00

Abstract: Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

公开(公告)号：US12140377B2

公开(公告)日：2024-11-12

申请号：US17287760

申请日：2019-04-02

Applicant: ARCAM AB

Inventor： Tomas Lock ,  Björn Löfving ,  Markus Ramsperger

IPC: G01N21/15 ,  B22F10/20 ,  B22F10/28 ,  B22F10/85 ,  B22F12/00 ,  B22F12/82 ,  B22F12/90 ,  F27D21/02 ,  G02B27/00 ,  B22F10/32 ,  B22F12/41 ,  B22F12/50 ,  B22F12/55 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00

Abstract: A device for viewing and/or illuminating a target surface in an evacuated chamber having condensable vapor therein, the device comprising: a first section with a through hole having a first end with a first opening and a second end with a second opening; and a second section having a chamber comprising a first portion with a first opening, a second portion with a second opening and a gas inlet, where the second opening is covered with a first window, said first section is attached with the first end to the first portion of the chamber allowing free passage between the chamber and the first section, said gas inlet is connectable to a gas reservoir for feeding a gas into the chamber for prohibiting the first window in the chamber for being contaminated of the condensable vapor.

公开(公告)号：US10071423B2

公开(公告)日：2018-09-11

申请号：US15921381

申请日：2018-03-14

Applicant: Arcam AB

Inventor： Johan Backlund ,  Tomas Lock

IPC: B33Y10/00 ,  B22F3/105 ,  B33Y30/00 ,  B33Y50/02 ,  B23K15/00 ,  B28B1/00 ,  B28B17/00 ,  B23K26/06 ,  B23K26/073 ,  G02B27/09 ,  B23K26/342 ,  B23K26/70 ,  B23K15/02 ,  B29C64/153 ,  B29C64/386 ,  B29K105/00

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B23K15/0013 ,  B23K15/0086 ,  B23K15/02 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/0732 ,  B23K26/0738 ,  B23K26/342 ,  B23K26/702 ,  B28B1/001 ,  B28B17/0081 ,  B29C64/153 ,  B29C64/386 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G02B27/0911 ,  Y02P10/295

Abstract: Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

公开(公告)号：US20160307731A1

公开(公告)日：2016-10-20

申请号：US15190899

申请日：2016-06-23

Applicant: Arcam AB

Inventor： Tomas Lock

IPC: H01J37/304 ,  B33Y40/00 ,  B33Y50/02 ,  B28B1/00 ,  B28B17/00 ,  G01T1/29 ,  B22F3/105 ,  B23K15/00 ,  B23K15/02 ,  H01J37/30 ,  H01J37/317 ,  H01J37/305 ,  B33Y10/00 ,  B29C67/00

CPC classification number: H01J37/3045 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B23K15/0013 ,  B23K15/002 ,  B23K15/0026 ,  B23K15/0086 ,  B23K15/02 ,  B28B1/001 ,  B28B17/00 ,  B28B17/0081 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B29C67/0077 ,  B29C67/0088 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  G01T1/295 ,  H01J37/09 ,  H01J37/244 ,  H01J37/30 ,  H01J37/3005 ,  H01J37/304 ,  H01J37/305 ,  H01J37/317 ,  H01J2237/0453 ,  H01J2237/2445 ,  H01J2237/2448 ,  H01J2237/24514 ,  H01J2237/2826 ,  H01J2237/30433 ,  H01J2237/3045 ,  H01J2237/30472 ,  H01J2237/3128 ,  Y02P10/295

Abstract: A method is provided for forming a three-dimensional article through successive fusion of parts of a powder bed. The method includes the steps of: applying a first powder layer on a work table; directing an electron beam from an electron beam source over the work table, the directing of the electron beam causing the first powder layer to fuse in first selected locations according to a pre-determined model, so as to form a first part of a cross section of the three dimensional article, and intensity modulating X-rays from the powder layer or from a clean work table with a patterned aperture modulator and a patterned aperture resolver, wherein a verification of at least one of a size, position, scan speed, or shape of the electron beam is achieved by comparing detected intensity modulated X-ray signals with saved reference values.

Abstract translation: 提供了一种用于通过粉末床的部分的连续熔融来形成三维制品的方法。 该方法包括以下步骤：将第一粉末层施加在工作台上; 将来自电子束源的电子束引导到工作台上，根据预定模型引导使第一粉末层在第一选定位置熔化的电子束，以便形成横截面的第一部分 以及强度调制来自粉末层的X射线或来自具有图案化孔径调制器和图案化孔径分解器的清洁工作台的X射线，其中验证尺寸，位置，扫描速度或 通过将检测到的强度调制的X射线信号与保存的参考值进行比较来实现电子束的形状。

公开(公告)号：US20160211116A1

公开(公告)日：2016-07-21

申请号：US14973230

申请日：2015-12-17

Applicant: Arcam AB

Inventor： Tomas Lock

IPC: H01J37/304 ,  H01J37/244 ,  B23K15/00 ,  H01J37/305

CPC classification number: H01J37/3045 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B23K15/0013 ,  B23K15/002 ,  B23K15/0026 ,  B23K15/0086 ,  B23K15/02 ,  B28B1/001 ,  B28B17/00 ,  B28B17/0081 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B29C67/0077 ,  B29C67/0088 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  G01T1/295 ,  H01J37/09 ,  H01J37/244 ,  H01J37/30 ,  H01J37/3005 ,  H01J37/304 ,  H01J37/305 ,  H01J37/317 ,  H01J2237/0453 ,  H01J2237/2445 ,  H01J2237/2448 ,  H01J2237/24514 ,  H01J2237/2826 ,  H01J2237/30433 ,  H01J2237/3045 ,  H01J2237/30472 ,  H01J2237/3128 ,  Y02P10/295

Abstract: A device for detecting X-rays radiated out of a substrate surface, said device comprising at least one X-ray detector, a resolver grating and a modulator grating, said resolver grating with at least one opening facing towards said X-ray detector is arranged in front of said X-ray detector. Said modulator grating is provided between said resolver grating and said substrate at a predetermined distance from said resolver grating and said substrate, where said modulator grating having a plurality of openings in at least a first direction, wherein said x-rays from said surface is spatially modulated with said modulator grating and resolver grating.