公开(公告)号：US11932494B2

公开(公告)日：2024-03-19

申请号：US17329967

申请日：2021-05-25

Applicant: ARCAM AB

Inventor： Karl Hansson ,  Peter Karlsson

IPC: B65G27/12 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B65G27/02

CPC classification number: B65G27/12 ,  B22F12/50 ,  B65G27/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B65G2201/042

Abstract: Raw material devices, systems that incorporate raw material delivery devices, and methods of supplying raw material using the raw material devices. A raw material delivery device includes a hollow body comprising a first end and a second end, the second end disposed above the first end in a system vertical direction, an inlet disposed at the first end of the hollow body, an outlet disposed at the second end of the hollow body, and a stepped passageway disposed within the hollow body between the inlet and the outlet. The stepped passageway is configured to deliver raw material via one or more steps from the inlet to the outlet.

公开(公告)号：US20240066598A1

公开(公告)日：2024-02-29

申请号：US17897294

申请日：2022-08-29

Applicant: Arcam AB

Inventor： Jimmie Jonnor ,  Jonas Hellgren

IPC: B22F10/36 ,  B22F10/28 ,  B22F10/85 ,  B22F12/30 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22F10/36 ,  B22F10/28 ,  B22F10/85 ,  B22F12/30 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A method of monitoring a spot quality of an electron beam includes directing the electron beam to a first measurement point in a powder layer a plurality of times, adjusting a focus offset of the electron beam each of the plurality of times the electron beam is directed to the first measurement point, measuring x-ray emissions from the first measurement point each of the plurality of times the electron beam is directed to the first measurement point, and determining a drift in a focus or an intensity of the electron beam based on the measured x-ray emissions.

公开(公告)号：US11623282B2

公开(公告)日：2023-04-11

申请号：US16797159

申请日：2020-02-21

Applicant: Arcam AB

Inventor： Johan Nordkvist ,  Ulf Ackelid

IPC: B22F12/00 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B22F3/10 ,  B23K15/00 ,  B23K15/02 ,  B22F10/10 ,  B22F12/45 ,  B22F12/41

Abstract: The present invention relates to a methods, computer program products, program elements, and apparatuses 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 steps of providing at least one electron beam source emitting an electron beam for at least one of heating or fusing the powder material, where the electron beam source comprises a cathode and an anode, and varying an accelerator voltage between the cathode and the anode between at least a first and second predetermined value during the forming of the three-dimensional article.

公开(公告)号：US20220402035A1

公开(公告)日：2022-12-22

申请号：US17349997

申请日：2021-06-17

Applicant: ARCAM AB

Inventor： Anders Snis

IPC: B22F10/31 ,  B22F10/85 ,  B22F12/30 ,  B22F12/41 ,  B22F12/45 ,  B22F12/90 ,  B33Y50/02

Abstract: Devices, systems and methods for calibrating and operating an additive manufacturing system are disclosed. A calibration system for an electron beam additive manufacturing system having a plurality of electron beam guns includes a calibration probe positioned in a build chamber of the electron beam additive manufacturing system, a sensing device positioned to measure and acquire a response generated as a result of impingement of electron beams emitted from the plurality of electron beam guns on the calibration probe, the sensing device generating a response signal as a result of the measured and acquired response, and an analysis component communicatively coupled to the sensing device and programmed to analyze and evaluate the response signal.

公开(公告)号：US11493650B2

公开(公告)日：2022-11-08

申请号：US16871480

申请日：2020-05-11

Applicant: Arcam AB

Inventor： David Svensson

IPC: G01T1/29 ,  B33Y50/02 ,  B22F10/28 ,  B22F12/90 ,  B23K15/00

Abstract: A method for detecting a position of an energy beam comprises mapping a first density modulated x-ray signal with a plurality of locations on an energy beam target, thereby generating a model of a background x-ray intensity. The method further comprises forming an x-ray signal time series using subsequent intensity modulated x-ray signals, each resulting from scanning the energy beam along the energy beam target in one of a plurality of directions at one of a plurality of speeds, and determining the position of the energy beam based upon a received x-ray signal strength based on the x-ray signal time series and the model of the background x-ray intensity.

公开(公告)号：US20220176458A1

公开(公告)日：2022-06-09

申请号：US17682226

申请日：2022-02-28

Applicant: Arcam AB

Inventor： Anders Snis

IPC: B22F12/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K15/00 ,  B29C64/268 ,  B23K15/06 ,  B29C64/277 ,  B23K26/082 ,  B22F3/10 ,  B23K26/08

Abstract: A method for producing three-dimensional objects layer by layer using a powdery material which can be solidified by irradiating it with at least two electron beams, said method comprises a pre-heating step, wherein the pre-heating step comprises the sub-step of scanning a pre-heating powder layer area (100) by scanning a first electron beam in a first region (I) and by scanning a second electron beam in a second region (II) distributed over the pre-heating powder layer area (100), wherein consecutively scanned paths are separated by, at least, a security distance (ΔY), said sub-step further comprising the step of synchronising the preheating of said first and second electron beams when simultaneously preheating said powder material within said first and second regions respectively, so that said first and second electron beams are always separated to each other with at least a minimum security distance (ΔX).

公开(公告)号：US11273607B2

公开(公告)日：2022-03-15

申请号：US16684696

申请日：2019-11-15

Applicant: ARCAM AB

Inventor： Stefan Olausson ,  Håkan Sjölander

IPC: B29C64/35 ,  B29C64/357 ,  B29C64/232 ,  B29C64/393 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

Abstract: A depowdering apparatus for depowdering a cake comprising a build part includes a depowdering chamber, a blast nozzle, and a build elevator. The depowdering chamber includes a bottom surface and a build inlet extending through the bottom surface, where the build inlet includes an inlet axis that is substantially vertically oriented. The blast nozzle is positioned within the depowdering chamber and oriented to direct a fluid stream toward the inlet axis. The blast nozzle is laterally spaced from the inlet axis and operable to revolve about the inlet axis on a travel path encircling the inlet axis. The build elevator is arranged below the build inlet in a vertical direction and is operable to raise the cake comprising the build part through the build inlet and into the depowdering chamber along the inlet axis as the blast nozzle is revolved about the inlet axis on the travel path.

公开(公告)号：US11267051B2

公开(公告)日：2022-03-08

申请号：US16266671

申请日：2019-02-04

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B22F12/00 ,  B22F1/00 ,  B33Y30/00 ,  B22F3/10 ,  B33Y40/00 ,  B33Y10/00 ,  B22F10/10

Abstract: Described is a build chamber for an additive manufacturing apparatus for forming a three-dimensional article layer by layer from a powder. The build chamber comprises a build chamber base body and said build chamber base body is formed by at least two segments telescopically coupled together.

公开(公告)号：US20210402470A1

公开(公告)日：2021-12-30

申请号：US16915276

申请日：2020-06-29

Applicant: Arcam AB

Inventor： Carl Hellestam

IPC: B22F3/105 ,  B22F1/00 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393

Abstract: Devices, systems, and methods for selectively sintering a powder layer in additive manufacturing processes to achieve a desired heat conductivity are disclosed. A method includes distributing a powder layer in a build chamber, selectively sintering the powder layer to form a plurality of sintered areas and a plurality of non-sintered areas based on a thermal model, and melting a subset of the plurality of sintered areas.

公开(公告)号：US11072117B2

公开(公告)日：2021-07-27

申请号：US16154415

申请日：2018-10-08

Applicant: Arcam AB

Inventor： Calle Hellestam

IPC: B29C64/232 ,  B29C64/241 ,  B29C64/153 ,  B22F12/00 ,  B29C64/245 ,  B29C64/393 ,  B29C64/236 ,  B22F10/10 ,  B33Y10/00 ,  B33Y30/00

Abstract: The invention relates to a platform device (4) for forming a three-dimensional article (2) in an additive manufacturing machine layer by layer by successive fusion of selected areas of powder layers (3), which selected areas correspond to successive layers of the three-dimensional article. The platform device (4) has a support member (5) with a surface (6) for receiving powder. The support member (5) is rotatable about a first rotation axis (13) extending in a direction (15) substantially perpendicular to the surface (6). The support member (5) and the first rotation axis (13) are rotatable about a second rotation axis (14) arranged substantially in parallel with and off-set to the first rotation axis (13).