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公开(公告)号：US09676031B2
公开(公告)日：2017-06-13
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.
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公开(公告)号：US20160311021A1
公开(公告)日：2016-10-27
申请号：US15048450
申请日：2016-02-19
Applicant: Arcam AB
Inventor： Isak Elfstroem , Mattias Fager
CPC classification number: B22F3/1055 , B22F2003/1057 , B29C64/153 , B29C64/386 , B29K2995/0005 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G05B15/02 , Y02P10/295
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.
Abstract translation: 本发明的各种实施例涉及一种使用聚焦透镜的添加剂制造中的方法，用于通过与高能束连续熔合形成三维制品，所述方法包括提供至少一层粉末床的至少一层的部分 工作台，这些部分对应于三维制品的连续横截面，所述方法包括以下步骤：使用所述聚焦透镜来改变所述粉末床上的所述高能束的光斑尺寸，作为已经熔融的厚度的函数 下面描述要融合的粉末的三维制品。 本发明还涉及一种用于形成三维制品的方法。
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公开(公告)号：US20160052056A1
公开(公告)日：2016-02-25
申请号：US14750793
申请日：2015-06-25
Applicant: Arcam AB
Inventor： Mattias Fager
CPC classification number: B22F3/1055 , B22F2003/1056 , B23K15/0086 , B23K15/02 , B23K15/06 , B29C64/153 , B33Y10/00 , B33Y30/00 , H01J37/06 , H01J37/305 , H01J2237/006 , H01J2237/022 , H01J2237/182 , Y02P10/295
Abstract: A method for forming a three dimensional article through successively depositing individual layers of powder material that are fused together with an electron beam from an electron beam sources so as to form the article. Providing a model of said three-dimensional article; a vacuum chamber having at least a first and a second section, powder material that are fused together is provided in said first section, at least one electron beam source is provided in said second section, wherein said first and second sections are openly connected to each other. Directing an electron beam from said at least one electron beam source over said work table to fuse in first selected locations according to said model to form a first cross section of said three-dimensional article while supplying a gas to said second section of said vacuum chamber.
Abstract translation: 一种通过连续地沉积与电子束源的电子束熔合在一起的粉末材料的各层来形成三维制品以形成制品的方法。 提供所述三维制品的模型; 具有至少第一和第二部分的真空室，熔融在一起的粉末材料设置在所述第一部分中，所述第二部分中设置有至少一个电子束源，其中所述第一和第二部分与每个部分公开连接 其他。 将来自所述至少一个电子束源的电子束导引在所述工作台上，以根据所述模型在第一选定位置熔化以形成所述三维制品的第一横截面，同时向所述真空室的所述第二部分提供气体 。
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