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公开(公告)号：US20140314609A1
公开(公告)日：2014-10-23
申请号：US14230957
申请日：2014-03-31
Applicant: Arcam AB
Inventor： Ulric Ljungblad , Lars Loewgren , Anders Snis , Mattias Fager
CPC classification number: B22F3/1055 , B22F3/12 , B22F2003/1056 , B23K15/00 , B29C64/153 , Y02P10/295
Abstract: An apparatus for forming at least one three-dimensional article by fusing parts of a powder bed layer-wise. The apparatus comprising a powder distributor and an energy beam for fusing the powder layer. Said powder distributor comprises a first part being an elongated rod provided movable at a predetermined distance above the powder bed and with its central axis in parallel with a top surface of said work table and second part being a metal foil having at least a first and a second opposite edge portions. Said metal foil is provided between said elongated rod and said work table, said first and second opposite edge portions are attached to said elongated rod so that a distance between said first and second edge portions is smaller than the distance between said first and second edge portions of said metal foil when said metal foil is in a flat position.
Abstract translation: 一种用于通过将粉末床的部分层压成型来形成至少一个三维制品的装置。 该装置包括粉末分配器和用于熔化粉末层的能量束。 所述粉末分配器包括第一部分，所述第一部分是细长杆，其设置成可在所述粉末床的上方以预定距离移动，并且其中心轴与所述工作台的顶表面平行;第二部分是金属箔，其具有至少第一和第 第二相对边缘部分。 所述金属箔设置在所述细长杆和所述工作台之间，所述第一和第二相对边缘部分附接到所述细长杆，使得所述第一和第二边缘部分之间的距离小于所述第一和第二边缘部分之间的距离 当所述金属箔处于平坦位置时。
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公开(公告)号：US12036731B2
公开(公告)日：2024-07-16
申请号：US17243819
申请日：2021-04-29
Applicant: Arcam AB
Inventor： Isak Elfstroem , Mattias Fager
IPC: B22F10/36 , B22F10/00 , B22F10/28 , B22F12/49 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G05B15/02 , B22F10/38 , B22F12/44 , B22F12/45
CPC classification number: B29C64/153 , B22F10/00 , B22F10/28 , B22F10/36 , B22F12/49 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G05B15/02 , B22F10/385 , B22F12/44 , B22F12/45 , B29K2995/0005 , Y02P10/25
Abstract: Various embodiments of the present invention relate to a method of using of a focus lens in additive manufacturing for forming a three-dimensional article through successive fusion, with a high energy beam, of parts of at least one layer of a powder bed provided on a work table, which parts correspond to successive cross sections of the three dimensional article, said method comprising the step of: using said focus lens for varying a spot size of said high energy beam on said powder bed as a function of an already fused thickness of said three-dimensional article below said powder which is to be fused. The invention is also related to a method for forming a three dimensional article.
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公开(公告)号：US20210260659A1
公开(公告)日：2021-08-26
申请号：US17243819
申请日：2021-04-29
Applicant: Arcam AB
Inventor： Isak Elfstroem , Mattias Fager
Abstract: Various embodiments of the present invention relate to a method of using of a focus lens in additive manufacturing for forming a three-dimensional article through successive fusion, with a high energy beam, of parts of at least one layer of a powder bed provided on a work table, which parts correspond to successive cross sections of the three dimensional article, said method comprising the step of: using said focus lens for varying a spot size of said high energy beam on said powder bed as a function of an already fused thickness of said three-dimensional article below said powder which is to be fused. The invention is also related to a method for forming a three dimensional article.
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公开(公告)号：US20180009033A1
公开(公告)日：2018-01-11
申请号：US15702504
申请日：2017-09-12
Applicant: Arcam AB
Inventor： Mattias Fager
IPC: B22F3/105 , B28B1/00 , B29K105/00
CPC classification number: B22F3/1055 , B22F2003/1057 , B28B1/001 , B29C64/153 , B29C64/20 , B29C64/386 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B33Y50/02
Abstract: A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the three-dimensional article, the method comprising the steps of: providing a model of the at least one three-dimensional article; applying a first powder layer on a work table; directing a first energy beam from a first energy beam source over the work table causing the first powder layer to fuse in first selected locations according to corresponding models to form a first cross section of the three-dimensional article, where the first energy beam is fusing at least a first region of a first cross section with parallel scan lines in a first direction; varying a distance between two adjacent scan lines, which are used for fusing the powder layer, as a function of a mean length of the two adjacent scan lines.
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公开(公告)号：US09789563B2
公开(公告)日：2017-10-17
申请号：US14547538
申请日：2014-11-19
Applicant: Arcam AB
Inventor： Isak Elfstroem , Calle Hellestam , Mattias Fager
CPC classification number: B23K15/0086 , B22F3/1055 , B23K15/02 , B23K15/10 , B23K26/08 , B29C64/153 , B29C64/386 , Y02P10/295
Abstract: The invention relates to a method for forming a three-dimensional article through successive fusion of locations of a powder bed. The method comprising: providing a model of said three-dimensional article; applying a powder layer on a work table; determining a maximum scan length of an energy beam; directing said energy beam from a first energy beam source over said work table with constant energy causing said first powder layer to fuse in first selected locations according to said model to form a first cross section of said three-dimensional article, wherein locations with a shorter scan length than said maximum scan length is provided with a time sink before and/or after said scan line so that the time period between each two adjacent scan lines is constant throughout the manufacture of said three-dimensional article.
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Patent Agency Ranking
公开(公告)号：US20150251249A1
公开(公告)日：2015-09-10
申请号：US14621209
申请日：2015-02-12
Applicant: Arcam AB
Inventor： Mattias Fager
CPC classification number: B22F3/1055 , B22F2003/1057 , B28B1/001 , B29C64/153 , B29C64/20 , B29C64/386 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B33Y50/02
Abstract: A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the three-dimensional article, the method comprising the steps of: providing a model of the at least one three-dimensional article; applying a first powder layer on a work table; directing a first energy beam from a first energy beam source over the work table causing the first powder layer to fuse in first selected locations according to corresponding models to form a first cross section of the three-dimensional article, where the first energy beam is fusing at least a first region of a first cross section with parallel scan lines in a first direction; varying a distance between two adjacent scan lines, which are used for fusing the powder layer, as a function of a mean length of the two adjacent scan lines.
Abstract translation: 一种用于通过粉末床的部分的连续融合形成至少一个三维制品的方法，该部分对应于三维制品的连续横截面，该方法包括以下步骤：提供至少一个 三维文章; 将第一粉末层施加在工作台上; 将来自第一能量束源的第一能量束引导到工作台上，使得第一粉末层根据相应的模型在第一选定位置融合，以形成三维制品的第一横截面，其中第一能量束熔合 至少第一横截面的第一区域，具有沿第一方向的平行扫描线; 根据两个相邻扫描线的平均长度，改变用于熔化粉末层的两条相邻扫描线之间的距离。
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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：US10529070B2
公开(公告)日：2020-01-07
申请号：US16154374
申请日：2018-10-08
Applicant: ARCAM AB
Inventor： Calle Hellestam , Mattias Fager
Abstract: A method for detecting electron beam filament wear in an electron beam source, the method comprising the steps of: enlarging a beam spot emanating from the electron beam source on a work table to a predetermined minimum size, capturing an image of the beam spot on the work table by a camera, comparing the captured image of the beam spot with a reference image, and detecting filament wear if the captured image is deviating more than a predetermined value from the reference image.
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公开(公告)号：US10525531B2
公开(公告)日：2020-01-07
申请号：US15290635
申请日：2016-10-11
Applicant: Arcam AB
Inventor： Mattias Fager
Abstract: The present invention relates to a method for prolonging lifetime of a triod electron beam source when forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the method comprising the steps of: adjusting a cathode heating power at a predetermined value above a threshold heating value, which threshold heating value creates a predetermined X-ray signal emanating from the triod electron beam source, fusing the three-dimensional article with the electron beam source having the cathode heating power at a predetermined value above a threshold heating value.
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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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