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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：US09543116B2
公开(公告)日：2017-01-10
申请号：US15190899
申请日：2016-06-23
Applicant: Arcam AB
Inventor： Tomas Lock
IPC: A61N5/00 , H01J37/304 , B33Y10/00 , B33Y40/00 , B33Y50/02 , B28B1/00 , B28B17/00 , B29C67/00 , B22F3/105 , B23K15/00 , B23K15/02 , H01J37/30 , H01J37/317 , H01J37/305 , G01T1/29 , B33Y30/00
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。
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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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公开(公告)号：US20150151490A1
公开(公告)日：2015-06-04
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: B29C67/00
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, 10 a, 10 b, 10 c, 10 d, 10 e) capable of generating a signal (S) upon detection of lifting of powdery material from the working area (5).
Abstract translation: 本发明涉及一种用于使用粉末材料逐层生产三维物体（6）的装置（1），该粉末材料可以通过用带电粒子束（4）照射而固化，所述装置（1）包括用于连续 将粉末层施加到工作台上，以及用于输送所述带电粒子束（4）的辐射枪（3），其中本发明的设备（1）包括粉末起重检测装置（10,10a，10b， 10c，10d，10e），其能够在检测到从工作区域（5）提起粉末材料时产生信号（S）。
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