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公开(公告)号：US20190147578A1
公开(公告)日：2019-05-16
申请号：US16154374
申请日：2018-10-08
Applicant: ARCAM AB
Inventor： Calle Hellestam , Mattias Fager
CPC classification number: G06T7/001 , B22F3/1055 , B29C64/153 , B29C64/393 , B33Y30/00 , B33Y40/00 , H01J3/028 , H01J37/222 , H01J37/304 , H01J2237/065 , H01J2237/30433 , H01J2237/3128
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：US20190099809A1
公开(公告)日：2019-04-04
申请号：US16103686
申请日：2018-08-14
Applicant: Arcam AB
Inventor： Calle Hellestam
Abstract: A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed on a support structure, the method comprising the steps of: providing at least one model of the three-dimensional article, lowering the support structure a predetermined distance and rotating the support structure a predetermined angle in a first direction before applying a first powder layer covering the lowered and rotated support structure, rotating the at least one model by the predetermined angle in the first direction before directing the at least one first energy beam from the at least one first energy beam source at selected locations for fusing the first powder layer, the at least one first energy beam source causing the first powder layer on the stationary support structure which is stationary to fuse in the selected locations according to the model to form first portions of the three-dimensional article.
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公开(公告)号：US10189086B2
公开(公告)日：2019-01-29
申请号：US14350767
申请日：2012-12-18
Applicant: ARCAM AB
Inventor： Calle Hellestam , Jenny Olsson , Isak Elfstroem
IPC: B22F3/105 , B22F3/00 , B33Y30/00 , B33Y10/00 , B22F3/11 , B29C64/153 , B29K105/04
Abstract: Disclosed is a method for manufacturing three-dimensional articles with porosity. A model is created of a porous structure, said creating step comprising the steps of: defining a three-dimensional space comprising a predetermined pattern of nodes, wherein said nodes are connected together in a predetermined manner with struts, moving each node in said three-dimensional space a randomized distance, which distance is less than a predetermined value and in a randomized direction, slicing said three-dimensional space into a predetermined number of two-dimensional layers with a predetermined thickness, slicing said three-dimensional article into two-dimensional layers with a predetermined thickness, applying one two-dimensional layer of said article on one two-dimensional layer of said porous structure resulting in a porous two-dimensional layer of said article, repeating said applying step for all two dimensional layers of said article, manufacturing the three-dimensional article with porosity according to the model by exposing fusible material to an energy source.
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Patent Agency Ranking
公开(公告)号：US20170246684A1
公开(公告)日：2017-08-31
申请号：US15592714
申请日：2017-05-11
Applicant: Arcam AB
Inventor： Calle Hellestam
Abstract: An apparatus comprising a control unit configured for applying a first powder layer on a work table; directing a first energy causing said first powder layer to fuse in first selected locations to form a first cross section where said first energy beam is fusing a first region with parallel scan lines in a first direction and a second region with parallel scan lines in a second direction; fusing at least one of the scan lines in said first region in said first direction immediately before fusing at least one of said scan lines in said second region in said second direction; applying a second powder layer and directing the energy beam causing said second powder layer to fuse in second selected locations where the energy beam is fusing said first region with parallel scan lines in a third direction and said second region in a fourth direction.
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公开(公告)号：US20160282848A1
公开(公告)日：2016-09-29
申请号：US15040590
申请日：2016-02-10
Applicant: Arcam AB
Inventor： Calle Hellestam
IPC: G05B19/4099
CPC classification number: G05B19/4099 , B22F3/105 , B22F3/1055 , B22F2003/1057 , B23K15/0086 , B23K15/02 , B23K26/342 , B23K26/70 , B28B1/001 , B29C64/153 , B29C64/386 , B29K2105/251 , B33Y10/00 , B33Y50/02 , G03F7/0037 , G03F7/70416 , G05B2219/49023 , Y02P10/295
Abstract: A method is provided for forming at least one three-dimensional article through successive fusion of parts of a powder bed. The method involves: providing a model of the at least one three dimensional article, dividing at least two cross sections in said model into a first inner area portion, a second inner area portion and a contour portion, applying a first material layer on a work table, directing at least one energy beam over the work table causing the first material layer to join in selected locations according to the model for forming a partial first cross section of the three dimensional article, applying a second material layer on said work table; and directing at least one energy beam over the work table causing the second material layer to join in selected locations and form a partial second cross section of said three dimensional article.
Abstract translation: 提供了一种用于通过粉末床的部分的连续融合来形成至少一个三维制品的方法。 该方法包括：提供所述至少一个三维制品的模型，将所述模型中的至少两个横截面分成第一内部区域部分，第二内部区域部分和轮廓部分，在工件上施加第一材料层 将至少一个能量束引导到工作台上，使得第一材料层根据用于形成三维制品的局部第一横截面的模型在选定位置连接，在所述工作台上施加第二材料层; 以及将至少一个能量束引导到所述工作台上，使所述第二材料层在所选择的位置连接并形成所述三维制品的部分第二横截面。
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公开(公告)号：US20160279735A1
公开(公告)日：2016-09-29
申请号：US15040604
申请日：2016-02-10
Applicant: Arcam AB
Inventor： Calle Hellestam
CPC classification number: G05B19/4099 , B22F3/105 , B22F3/1055 , B22F2003/1057 , B23K15/0086 , B23K15/02 , B23K26/342 , B23K26/70 , B28B1/001 , B29C64/153 , B29C64/386 , B29K2105/251 , B33Y10/00 , B33Y50/02 , G03F7/0037 , G03F7/70416 , G05B2219/49023 , Y02P10/295
Abstract: A method is provided for production of at least one three-dimensional article by successively providing powder layers and fusing together of selected areas of the layers, which areas correspond to partial cross sections of the three-dimensional body. The method involves: applying a first powder layer on a work table, fusing the first powder layer in the selected areas, the selected areas being a full contour of the three dimensional article and a first portion of an inner area of the three-dimensional article, and fusing a second portion of the inner area of the three-dimensional article in the first powder layer completely when the first powder layer is covered with at least one second layer, the second portion being distinct relative to the first portion.
Abstract translation: 提供了一种用于通过连续地提供粉末层并将层的选定区域熔合在一起的方式来生产至少一个三维制品，该区域对应于三维体的部分横截面。 该方法包括：将第一粉末层施加在工作台上，将所选择的区域中的第一粉末层熔合，所选择的区域是三维制品的完整轮廓和三维制品的内部区域的第一部分 并且当第一粉末层被至少一个第二层覆盖时，在第一粉末层中将三维制品的内部区域的第二部分完全熔合，第二部分相对于第一部分是不同的。
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公开(公告)号：US20150174695A1
公开(公告)日：2015-06-25
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.
Abstract translation: 本发明涉及通过粉末床位置的连续熔化来形成三维制品的方法。 该方法包括：提供所述三维制品的模型; 在工作台上涂抹粉末层; 确定能量束的最大扫描长度; 将来自第一能量束源的所述能量束以恒定能量引导到所述工作台上，使得所述第一粉末层根据所述模型在第一选定位置融合，以形成所述三维制品的第一横截面，其中具有较短的位置 在所述扫描线之前和/或之后，在所述最大扫描长度上的扫描长度设置有时间信号，使得在所述三维制品的制造过程中，每两条相邻扫描线之间的时间段是恒定的。
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28.发明申请公开(公告)号：US20140301884A1
公开(公告)日：2014-10-09
申请号：US14350767
申请日：2012-12-18
Applicant: ARCAM AB
Inventor： Calle Hellestam , Jenny Olsson , Isak Elfstoem
IPC: B22F3/00
CPC classification number: B22F3/008 , B22F3/1055 , B22F3/11 , B29C64/153 , B29K2105/04 , B33Y10/00 , B33Y30/00 , Y02P10/295
Abstract: Disclosed is a method for manufacturing three-dimensional articles with porosity. A model is created of a porous structure, said creating step comprising the steps of: defining a three-dimensional space comprising a predetermined pattern of nodes, wherein said nodes are connected together in a predetermined manner with struts, moving each node in said three-dimensional space a randomized distance, which distance is less than a predetermined value and in a randomized direction, slicing said three-dimensional space into a predetermined number of two-dimensional layers with a predetermined thickness, slicing said three-dimensional article into two-dimensional layers with a predetermined thickness, applying one two-dimensional layer of said article on one two-dimensional layer of said porous structure resulting in a porous two-dimensional layer of said article, repeating said applying step for all two dimensional layers of said article, manufacturing the three-dimensional article with porosity according to the model by exposing fusible material to an energy source.
Abstract translation: 公开了一种用于制造具有多孔性的三维制品的方法。 创建一个多孔结构的模型，所述创建步骤包括以下步骤：定义包括预定模式节点的三维空间，其中所述节点以预定方式与支柱连接在一起，移动所述三维空间中的每个节点， 所述三维空间是随机化距离，该距离小于预定值，并且在随机方向上，将所述三维空间切片成预定数量的具有预定厚度的二维层，将所述三维制品切成二维 具有预定厚度的层，将所述制品的一个二维层施加在所述多孔结构的一个二维层上，导致所述制品的多孔二维层，对所述制品的所有二维层重复所述施加步骤， 通过将可熔材料暴露于能量源，根据模型制造具有孔隙率的三维制品。
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