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.

公开(公告)号：US20170173691A1

公开(公告)日：2017-06-22

申请号：US15450358

申请日：2017-03-06

Applicant: Arcam AB

Inventor： Daniel Jonasson

IPC: B22F3/105 ,  B33Y50/02 ,  B23K15/00 ,  B33Y10/00

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.

公开(公告)号：US20180154444A1

公开(公告)日：2018-06-07

申请号：US15885205

申请日：2018-01-31

Applicant: Arcam AB

Inventor： Daniel Jonasson

IPC: B22F3/105 ,  B29C64/386 ,  B33Y50/02 ,  B28B1/00 ,  B23K15/00 ,  B33Y10/00 ,  B29C64/153 ,  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.

公开(公告)号：US09802253B2

公开(公告)日：2017-10-31

申请号：US14547530

申请日：2014-11-19

Applicant: Arcam AB

Inventor： Daniel Jonasson

IPC: B33Y30/00 ,  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: 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, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for heating and/or fusing said powder material. Controlling the electron beam source in a first mode when said formation of said three dimensional article is in a first process step. Controlling said electron beam in a second mode when said formation of said three dimensional article is in a second process step, wherein in said first mode an electron beam current from said electron beam source is controlled in a feed-forward mode and in said second mode said electron beam current is controlled in a feed-back mode.

公开(公告)号：US09782933B2

公开(公告)日：2017-10-10

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: B29C64/393 ,  B29C67/00 ,  B22F3/105 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B33Y30/00 ,  B29L9/00

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, 10a, 10b, 10c, 10d, 10e) capable of generating a signal (S) upon detection of lifting of powdery material from the working area (5).

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.

公开(公告)号：US20150165525A1

公开(公告)日：2015-06-18

申请号：US14547530

申请日：2014-11-19

Applicant: Arcam AB

Inventor： Daniel Jonasson

IPC: B22F3/105 ,  B28B1/00 ,  B23K15/00 ,  B29C67/00

CPC classification number: B22F3/1055 ,  B23K15/0086 ,  B28B1/001 ,  B29C64/153 ,  B29C64/386 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y50/02 ,  Y02P10/295

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, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for heating and/or fusing said powder material. Controlling the electron beam source in a first mode when said formation of said three dimensional article is in a first process step. Controlling said electron beam in a second mode when said formation of said three dimensional article is in a second process step, wherein in said first mode an electron beam current from said electron beam source is controlled in a feed-forward mode and in said second mode said electron beam current is controlled in a feed-back mode.

Abstract translation: 本发明涉及一种通过连续地沉积熔合在一起以形成制品的粉末材料的各层来形成三维制品的方法，所述方法包括以下步骤：提供至少一个发射电子的电子束源 用于加热和/或熔化所述粉末材料的光束。 当所述三维制品的形成处于第一工艺步骤中时，以第一模式控制电子束源。 当所述三维制品的形成处于第二工艺步骤中时，以第二模式控制所述电子束，其中在所述第一模式中，来自所述电子束源的电子束电流被控制在前馈模式和所述第二模式 所述电子束电流被控制在反馈模式。

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）。