公开(公告)号：US20170216916A1

公开(公告)日：2017-08-03

申请号：US15129333

申请日：2015-03-27

Applicant: EOS GmbH Electro Optical Systems

Inventor： Olli Nyrhilä ,  Alexander Schilling ,  Jörg Hamann ,  Robert Achim Domröse ,  Dominik Wolf ,  Tatu Syvänen ,  Kevin Minet

IPC: B22F3/105 ,  B28B1/00 ,  B28B17/00 ,  B33Y10/00 ,  B23K26/14 ,  B33Y40/00 ,  B33Y50/02 ,  B23K26/342 ,  B23K26/144 ,  B29C67/00 ,  B33Y30/00

Abstract: A device (1), for producing a three-dimensional object (2) by solidifying, layer-by-layer, building material (13) at locations in the respective layer corresponding to the cross-section of the object (2) to be produced, contains a flow device (31, 32, 34, 35) for generating a gas flow above an applied layer of the building material (13) by means of a nozzle element (40) for introducing the gas into the device. The nozzle element (40) comprises a body (41) with a gas inlet side and a gas outlet side (46), and a plurality of channels (42) which penetrate the body from the gas inlet side (44) to the gas outlet side (46), are provided with inlet openings on the gas inlet side (44) and with gas outlet openings (47) on the gas outlet side (46), and which are separated by walls (43). The length of the channels (42) is selected such that therein a laminar flow is formed at the gas outlet side (46).

公开(公告)号：US11141923B2

公开(公告)日：2021-10-12

申请号：US16317742

申请日：2017-07-07

Applicant: EOS GmbH Electro Optical Systems

Inventor： Robert Achim Domröse ,  Pilvi Ylander ,  Katri Kakko ,  Kevin Minet ,  Tatu Syvänen ,  Dominik Wolf

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/153 ,  G05B19/4099 ,  G05B19/401 ,  G06F30/00 ,  G05B19/418 ,  G06F119/18

Abstract: Disclosed is a method of determining a quality indicator of an object that has been manufactured by layer-wise additive manufacturing. The method includes providing a first dataset that is assigned to a process monitoring device, detecting a relative frequency of occurrence of a process irregularity in a layer and of assigning a grade indicator value to the solidified object cross-section in a layer according to the detected relative frequency, generating a second dataset, in which a grade indicator value is assigned to the object cross-section in each of said several layers following upon one another, and determining a quality indicator by using the second dataset (or several further datasets).

公开(公告)号：US10682700B2

公开(公告)日：2020-06-16

申请号：US15129333

申请日：2015-03-27

Applicant: EOS GmbH Electro Optical Systems

Inventor： Olli Nyrhilä ,  Alexander Schilling ,  Jörg Hamann ,  Robert Achim Domröse ,  Dominik Wolf ,  Tatu Syvänen ,  Kevin Minet

IPC: B22F3/105 ,  B29C64/153 ,  B29C64/35 ,  B29C64/20 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B23K26/144 ,  B23K26/342 ,  B23K26/14 ,  B28B1/00 ,  B28B17/00 ,  B29C64/165 ,  B29K105/00

Abstract: A device is disclosed for producing a three-dimensional object by layerwise construction. The device contains a flow device for generating a gas flow above an applied layer of the building material by means of a nozzle element for introducing the gas into the device. The nozzle element includes a body with a gas inlet side and a gas outlet side, and channels which penetrate the body from the gas inlet side to the gas outlet side, provided with inlet openings on the gas inlet side and gas outlet openings on the gas outlet side, and which are separated by walls. The length of the channels is selected such that a laminar flow is formed at the gas outlet side.