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公开(公告)号：US20200246869A9
公开(公告)日：2020-08-06
申请号：US16141685
申请日：2018-09-25
Applicant: Arcam AB
Inventor： Ulric Ljungblad , Ulf Ackelid
IPC: B22F3/00 , B22F3/105 , B29C64/153 , B29C64/386 , B28B1/00 , B28B17/00 , B33Y50/02 , B33Y10/00 , B29K105/00
Abstract: The present invention relates to a method 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 method comprising the step of heating a first portion of a support surface while depositing a layer of powder material on a second portion of the support surface.
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公开(公告)号：US20190263063A1
公开(公告)日：2019-08-29
申请号：US16266828
申请日：2019-02-04
Applicant: Arcam AB
Inventor： Kristofer Karlsson
IPC: B29C64/25 , B29C64/245 , B23K15/00 , B22F3/105 , B23K15/06 , B29C64/153 , B29C64/268 , B33Y30/00 , B33Y10/00 , B33Y50/02
Abstract: The invention relates to a build chamber (1) for an additive manufacturing apparatus (100) for forming a three-dimensional article layer by layer from a powder. The build chamber (1) comprising a build chamber base body (2) and the build chamber base body (2) is formed by at least two segments (4) telescopically coupled together. Associated with the telescopically coupled segments are one or more bellows assemblies, further coupled to support structure configured to raise and/or lower the build table. An associated method is also provided.
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公开(公告)号：US20190193203A1
公开(公告)日：2019-06-27
申请号：US16188453
申请日：2018-11-13
Applicant: ARCAM AB
Inventor： Christian Ekberg , Christer Roennbacke
IPC: B23K26/342 , B33Y30/00 , B33Y50/02 , B23K26/70
CPC classification number: B23K26/342 , B22F2003/1056 , B23K26/703 , B29C64/153 , B29C64/25 , B29C64/255 , B29C64/295 , B29C64/364 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02
Abstract: Provided is an additive manufacturing apparatus (1) for forming a three-dimensional article (2) layer by layer from a powder. The apparatus comprising an outer casing (3) forming a build chamber (4), and a build tank (5) arranged inside the casing in the build chamber. The apparatus (1) further comprises an arrangement (20) for controlling a temperature of the apparatus. The temperature control arrangement (20) comprises at least a first circuit (21) for a first working fluid. The first circuit being arranged at a wall portion (40; 50) of the apparatus for transferring heat between the build chamber (4) and the first working fluid.
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公开(公告)号：US20190060996A1
公开(公告)日：2019-02-28
申请号：US16166805
申请日：2018-10-22
Applicant: ARCAM AB
Inventor： Calle Hellestam , Jenny Olsson , Isak Elfstroem
IPC: B22F3/00 , B29C64/153 , B33Y30/00
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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公开(公告)号：US20180345377A1
公开(公告)日：2018-12-06
申请号：US16040841
申请日：2018-07-20
Applicant: ARCAM AB
Inventor： Johan Backlund , Tomas Lock
Abstract: Provided is an apparatus that includes a high energy beam configured to make a first weld at a first position on a workpiece; at least one deflection lens configured to deflect the high energy beam so as to cause the high energy beam to make a second weld at a second position; at least one focusing lens configured to focus the high energy beam; at least one astigmatism lens; and at least one controller. The controller is configured to shape the high energy beam so that the shape of the high energy beam on the workpiece is longer in a direction parallel to a deflection direction of the high energy beam than in a direction perpendicular to the deflection direction of the high energy beam. A length ratio is varying as a function of the power of the energy beam, while the width in the perpendicular direction is constant.
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Patent Agency Ranking
公开(公告)号：US10099289B2
公开(公告)日：2018-10-16
申请号：US15885205
申请日：2018-01-31
Applicant: Arcam AB
Inventor： Daniel Jonasson
IPC: B33Y10/00 , B22F3/105 , B28B1/00 , B23K15/00 , B33Y50/02 , B29C64/153 , B29C64/386 , B29K105/00
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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57.发明授权公开(公告)号：US10071424B2
公开(公告)日：2018-09-11
申请号：US15951979
申请日：2018-04-12
Applicant: Arcam AB
Inventor： Mattias Fager
IPC: B33Y80/00 , B22F3/105 , B28B1/00 , B29C64/153 , B29C64/20 , B33Y10/00 , B33Y50/02 , B29K105/00 , B33Y30/00
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 computer program product is configured 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, by: 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：US10058921B2
公开(公告)日：2018-08-28
申请号：US15921401
申请日：2018-03-14
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：US20180200796A1
公开(公告)日：2018-07-19
申请号：US15921381
申请日：2018-03-14
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：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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