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公开(公告)号：US20180311759A1
公开(公告)日：2018-11-01
申请号：US15938646
申请日：2018-03-28
Applicant: Arcam AB
Inventor： Ulf Ackelid , Isak Elfstroem
CPC classification number: B22F3/1055 , B22F2003/1056 , B29C64/153 , B29C64/20 , B33Y10/00 , B33Y30/00
Abstract: The present invention relates to an apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the apparatus comprising an electron beam source emanating an electron beam for fusing the powder material in a build tank, a hollow construction having an upper opening and a lower opening, means for moving the hollow construction between a first position and a second position, a synchronising unit for synchronising the movement of a powder distributor for applying the individual layers of powder material on the work table with the movement of the hollow construction so that the hollow metal construction is at the first position when fusing and/or heating the powder layer and at the second position when the powder distributor is distributing the powder material for forming the individual powder layers.
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公开(公告)号：US09919361B2
公开(公告)日：2018-03-20
申请号：US15450358
申请日：2017-03-06
Applicant: Arcam AB
Inventor： Daniel Jonasson
IPC: B33Y50/00 , B22F3/105 , B28B1/00 , B23K15/00 , B33Y10/00 , B33Y50/02 , B29C64/153 , B29C64/386 , B29K105/00
CPC classification number: B22F3/1055 , B23K15/0086 , B28B1/001 , B29C64/153 , B29C64/386 , B29K2105/251 , B33Y10/00 , B33Y50/02 , Y02P10/295
Abstract: Provided is a method for forming a three dimensional article comprising the steps of: providing at least one electron beam source emitting an electron beam for at least one of heating or fusing said powder material, where said electron beam source comprises a cathode, an anode, and a grid between said cathode and anode; controlling the electron beam source in at least two modes during said formation of said three dimensional article; applying a predetermined accelerator voltage between said cathode and said anode; applying a predetermined number of different grid voltages between said grid and said cathode for producing a corresponding predetermined number of electron beam currents; and at least one of creating or updating a look-up table or mathematical function during one of the at least two modes, wherein said look-up table or mathematical function defines a relationship between a desired electron beam current and an applied grid voltage.
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公开(公告)号：US20170348792A1
公开(公告)日：2017-12-07
申请号：US15495348
申请日：2017-04-24
Applicant: Arcam AB
Inventor： Mattias Fager
IPC: B23K15/00 , B33Y50/02 , B23K26/342 , B33Y10/00 , B33Y30/00 , B23K15/06 , B23K103/04 , B23K103/18 , B23K103/10 , B23K103/14
CPC classification number: B23K15/0086 , B22F3/1055 , B22F2003/1056 , B23K15/06 , B23K26/342 , B23K2103/05 , B23K2103/10 , B23K2103/14 , B23K2103/26 , B33Y10/00 , B33Y30/00 , B33Y50/02 , Y02P10/295
Abstract: A method is provided for forming a three-dimensional article through successive fusion of parts of a metal powder bed, which parts corresponds to successive cross sections of the three-dimensional article, the method comprising the steps of: directing the at least one electron beam from the at least one electron beam source over a work table causing a powder layer to fuse in selected locations to form a first cross section of the three-dimensional article, preheating, with the at least one electron beam, an area of non-fused powder to a temperature within a predetermined temperature range a predetermined distance in Z-direction before the area is to be fused, where the area times the distance in z-direction is defining a preheating volume of non-fused powder when the three dimensional article is finished.
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公开(公告)号：US09789541B2
公开(公告)日：2017-10-17
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.
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公开(公告)号：US20170227418A1
公开(公告)日：2017-08-10
申请号：US15495331
申请日：2017-04-24
Applicant: ARCAM AB
Inventor： Anders Snis
IPC: G01M11/02 , B23K26/082 , B33Y50/02 , B23K26/046 , B23K15/02 , B23K26/342 , B23K15/00 , B23K26/03
CPC classification number: G01M11/02 , B22F3/1055 , B22F2003/1057 , B23K15/0013 , B23K15/0086 , B23K15/02 , B23K26/032 , B23K26/04 , B23K26/046 , B23K26/082 , B23K26/342 , B23K26/70 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02 , G01B11/00 , G01B11/14 , G01B15/00 , G01P3/36 , G01P21/00 , H01J37/244
Abstract: A method for verifying a position of an energy beam spot, said method comprising the steps of: providing a calibrated energy beam having a first focus in a at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said calibrated energy beam having a second focus in said at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, comparing said at least two positions created with said first and second focus, wherein said position of the energy beam is verified if said positions created with said first focus are deviating less than a predetermined distance from said positions created with said second focus.
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Patent Agency Ranking
公开(公告)号：US09718129B2
公开(公告)日：2017-08-01
申请号：US14443015
申请日：2013-11-18
Applicant: Arcam AB
Inventor： Ulric Ljungblad , Martin Wildheim
CPC classification number: B22F3/1055 , B22F5/00 , B22F7/02 , B22F2003/1056 , B29C64/153 , B29C64/20 , B29C64/386 , B29C67/0077 , B29C67/0085 , B29C67/0088 , B33Y10/00 , Y02P10/295
Abstract: A method for forming a three-dimensional article, said method comprising the steps of: providing a predetermined amount of powder for forming a first powder layer on a start plate, distributing said predetermined amount of powder with a powder distributor for forming said first powder layer, directing an energy beam over said start plate causing said first powder layer to fuse in selected locations according to a model to form a first cross section of said three-dimensional article. At least one image of the powder to be distributed is captured with a camera at least one time during said distribution of said powder on said start plate for forming said first powder layer and at least one value of at least one parameter in said image detected with said camera is compared with a reference parameter value.
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公开(公告)号：US09713844B2
公开(公告)日：2017-07-25
申请号：US15371637
申请日：2016-12-07
Applicant: Arcam AB
Inventor： Ulf Ackelid
IPC: C23C16/44 , B22F3/105 , B05D3/06 , B22F1/02 , B28B1/00 , B29C67/00 , C23C14/22 , C23C14/00 , B33Y10/00 , B33Y30/00 , B33Y70/00
CPC classification number: B22F3/1055 , B05D3/068 , B22F1/025 , B22F2003/1056 , B22F2998/10 , B22F2999/00 , B28B1/001 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y70/00 , C23C14/00 , C23C14/223 , C23C16/4417 , Y02P10/295 , C23C16/00 , B22F2202/01
Abstract: Various embodiments provide a method and apparatus for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table in an additive manufacturing machine, which parts corresponds to successive cross sections of the three-dimensional article. The method comprises the steps of: applying a layer of predetermined thickness of powder particles on the work table, applying a coating on at least a portion of the powder particles, which coating is at least partially covering the powder particles, and fusing the powder particles on the work table with an electron beam.
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公开(公告)号：US09676033B2
公开(公告)日：2017-06-13
申请号：US14452308
申请日：2014-08-05
Applicant: Arcam AB
Inventor： Calle Hellestam
IPC: B22F3/10 , B29C67/00 , B22F3/105 , G05B19/4099 , B33Y10/00 , B28B1/00 , B29K105/00
CPC classification number: B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B28B1/001 , B28B17/0081 , B29C64/153 , B29C64/386 , B29C67/0077 , B29C67/0088 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G05B19/4099 , G05B2219/49023 , Y02P10/295
Abstract: A method for forming a three-dimensional article through successive fusion of parts of a powder bed, applying a first powder layer on a work table, directing a first energy beam from a first energy beam source over said work table causing said first powder layer to fuse in first selected locations according to a corresponding model to form a first cross section of said at least one three-dimensional article, where said first energy beam is fusing a first article with parallel scan lines in a first direction, fusing a second scan line in said first direction in said first layer in said first article within a predetermined time interval after fusing a first scan line in said first article, wherein at least one intermediate scan line is fused within said time interval at another predetermined position and where said first and second scan lines are adjacent to each other.
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公开(公告)号：US09505172B2
公开(公告)日：2016-11-29
申请号：US14443016
申请日：2013-11-19
Applicant: Arcam AB
Inventor： Ulric Ljungblad
CPC classification number: B29C67/0077 , B22F3/1055 , B22F2003/1056 , B28B1/001 , B29C64/153 , B29C64/20 , B29C67/0085 , B33Y10/00 , B33Y30/00 , Y02P10/295
Abstract: The present invention relates to a method for forming a three-dimensional article through successive fusion of applied powder. Said method comprising the steps of: providing at least one powder hopper comprising powder to be used for forming said three-dimensional article, providing a predetermined amount of powder at a build support, directing an energy beam over said build support causing at least a portion of said powder to sinter and causing at least a portion of said powder to bond to said build support, directing an energy beam over said build support causing said powder to fuse in selected locations according to a model to form a first portion of said three-dimensional article, rotating said build support around an axis of rotation for creating said three-dimensional article, which three-dimensional article is build up layer by layer in a radial direction with respect to said axis of rotation.
Abstract translation: 本发明涉及一种通过连续熔融施用的粉末形成三维制品的方法。 所述方法包括以下步骤：提供至少一个粉末料斗，其包括用于形成所述三维制品的粉末，在构造支撑件处提供预定量的粉末，将能量束引导到所述构建支撑件上，形成至少一部分 的所述粉末烧结并使所述粉末的至少一部分结合到所述构建支撑件，将能量束引导到所述构建支撑件上，使得所述粉末根据模型在选定位置熔合以形成所述三维构件的第一部分， 围绕用于产生所述三维制品的旋转轴旋转所述构建支撑件，所述三维制品相对于所述旋转轴线在径向方向上逐层地建立。
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公开(公告)号：US20160303687A1
公开(公告)日：2016-10-20
申请号：US15190877
申请日：2016-06-23
Applicant: Arcam AB
Inventor： Ulric Ljungblad
CPC classification number: B23K26/342 , B22F3/004 , B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B22F2998/00 , B22F2999/00 , B23K15/0013 , B23K15/0086 , B23K26/032 , B23K26/034 , B29C64/153 , B33Y30/00 , B33Y50/02 , Y02P10/295 , B22F7/04 , B22F2207/15
Abstract: The invention concerns a method for producing three-dimensional objects (6) layer by layer using a powdery material (7) which can be solidified by irradiating it with a high-energy beam (4), said method comprising the steps of: applying a first layer of powdery material onto a working area (5); solidifying a part of said first layer by irradiating it with a high-energy beam; and applying a second layer (8) of powdery material onto the first, partly solidified layer. The invention is characterized in that the method comprises the step of: determining a rate at which the temperature of the second layer (8) increases after application onto the first layer. The invention also concerns an apparatus configured to operate according to the above method.
Abstract translation: 本发明涉及一种使用粉末材料（7）逐层生产三维物体（6）的方法，其可以通过用高能束（4）照射而固化，所述方法包括以下步骤：施加 第一层粉状材料到工作区域（5）上; 通过用高能束照射来固化所述第一层的一部分; 以及将第二层（8）的粉末材料施加到所述第一部分固化的层上。 本发明的特征在于该方法包括以下步骤：确定施加到第一层上之后第二层（8）的温度升高的速率。 本发明还涉及一种被配置为根据上述方法操作的装置。
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