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公开(公告)号：US20180200796A1
公开(公告)日：2018-07-19
申请号：US15921381
申请日：2018-03-14
Applicant: Arcam AB
Inventor： Johan Backlund , Tomas Lock
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.
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公开(公告)号：US09950367B2
公开(公告)日：2018-04-24
申请号：US15466212
申请日：2017-03-22
Applicant: Arcam AB
Inventor： Johan Backlund , Tomas Lock
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.
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公开(公告)号：US20150283613A1
公开(公告)日：2015-10-08
申请号：US14636607
申请日：2015-03-03
Applicant: ARCAM AB
Inventor： Johan Backlund , Tomas Lock
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.
Abstract translation: 本发明的各种实施例涉及一种用于焊接工件的方法，包括以下步骤：用高能束在所述工件上的第一位置处进行第一焊接，用至少一个偏转透镜偏转高能束，以使 在所述工件上的第二位置处的第二焊缝，用至少一个聚焦透镜将高能束聚焦在所述工件上，用至少一个散光透镜将所述高能束束形成在所述工件上，使得所述高能束 工件在与所述高能束的偏转方向平行的方向上比在所述高能束的所述偏转方向垂直的方向上更长。 本发明还涉及散光透镜的使用和三维制品的形成方法。
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Patent Agency Ranking
公开(公告)号：US12194534B2
公开(公告)日：2025-01-14
申请号：US17292278
申请日：2019-02-28
Applicant: Arcam AB
Inventor： Johan Backlund
IPC: B33Y50/02 , B22F10/28 , B22F10/80 , B22F10/85 , B22F12/41 , B22F12/90 , B33Y10/00 , B33Y30/00 , B33Y40/10 , B22F10/362
Abstract: A method for controlling an energy beam in an additive manufacturing machine when forming a three-dimensional article layer by layer by successive fusion of selected areas of powder layers, which selected areas correspond to successive layers of the article. The method includes steps of radiating a powder layer by the energy beam and creating a set of images of the powder layer for a set of positions on the powder layer by detecting particles emitted, backscattered or reflected from the powder layer when being radiated, comparing data representing the set of images and reference data with each other for identifying a difference between the energy beam when used on the powder layer and the reference data, with respect to at least one energy beam parameter, and adjusting the energy beam based on such an identified difference between the energy beam when used on the powder layer and the reference data.
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公开(公告)号：US11517975B2
公开(公告)日：2022-12-06
申请号：US16195970
申请日：2018-11-20
Applicant: Arcam AB
Inventor： Mattias Fager , Johan Backlund
IPC: H01J37/147 , H01J37/10 , H01J37/063 , B23K15/00 , H01J37/18 , H01J37/09 , B33Y10/00 , B33Y30/00 , B23K15/06 , B33Y50/02 , B29C64/153 , B29C64/268 , H01J37/304 , B29C64/393 , H01J37/301 , B22F10/20 , B22F10/30
Abstract: An electron beam source including a cathode, an anode, a means for deflecting an electron beam over a target surface and at least one vacuum pump, the electron beam source further including a contraction area arranged between the anode and the means for deflecting the electron beam where a hole in the contraction area is aligned with a hole in the anode with respect to the cathode, a first vacuum pump is arranged between the contraction area and the anode and a second vacuum pump is arranged above the anode, a gas inlet is provided between the contraction area and the means for deflecting the electron beam, wherein a first crossover of the electron beam is arranged between the cathode and the anode and a second crossover is arranged at or in close proximity to the contraction area.
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公开(公告)号：US20190193192A1
公开(公告)日：2019-06-27
申请号：US16195970
申请日：2018-11-20
Applicant: Arcam AB
Inventor： Mattias Fager , Johan Backlund
IPC: B23K15/00 , H01J37/147 , H01J37/063 , H01J37/18 , H01J37/09 , H01J37/10 , B33Y10/00 , B33Y30/00
CPC classification number: B23K15/0086 , B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B23K15/002 , B23K15/0026 , B23K15/0046 , B23K15/06 , B29C64/153 , B29C64/268 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , H01J37/063 , H01J37/09 , H01J37/10 , H01J37/147 , H01J37/18 , H01J37/301 , H01J37/3045 , H01J2237/1825 , H01J2237/188 , H01J2237/3128 , H01J2237/316
Abstract: An electron beam source comprising a cathode, an anode, a means for deflecting an electron beam over a target surface and at least one vacuum pump, the electron beam source further comprising a contraction area arranged between the anode and the means for deflecting the electron beam where a hole in the contraction area is aligned with a hole in the anode with respect to the cathode, a first vacuum pump is arranged between the contraction area and the anode and a second vacuum pump is arranged above the anode, a gas inlet is provided between the contraction area and the means for deflecting the electron beam, wherein a first crossover of the electron beam is arranged between the cathode and the anode and a second crossover is arranged at or in close proximity to the contraction area.
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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
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.
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公开(公告)号：US20170087661A1
公开(公告)日：2017-03-30
申请号：US15245542
申请日：2016-08-24
Applicant: Arcam AB
Inventor： Johan Backlund , Martin Wildheim
Abstract: An X-ray standard reference object for calibrating a scanning electron beam in an additive manufacturing apparatus by measuring X-ray signals generated by scanning the electron beam onto the reference object, the reference object comprises: a lower and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate comprises a plurality of holes, wherein a predetermined hollow pattern is provided inside the holes.
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