公开(公告)号：WO2022031595A1

公开(公告)日：2022-02-10

申请号：PCT/US2021/044167

申请日：2021-08-02

申请人： SIGMA LABS, INC.

发明人： BECKETT, Darren ,  FRYE, Roger ,  YU, Christina Xuan ,  BETTS, Scott ,  JACQUEMETTON, Lars ,  ANDERSON, Kevin C.

IPC分类号： B22F10/36 ,  B22F10/28 ,  G06N20/00 ,  B22F10/366 ,  B22F10/85 ,  B29C64/135 ,  B29C64/153 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  G01N2021/8845 ,  G01N21/8806 ,  G01N21/95 ,  G05B19/4099 ,  G05B2219/32217

摘要： An additive manufacturing system comprises an apparatus arranged to distribute layer of metallic powder across a build plane and a power source arranged to emit a beam of energy at the build plane and fuse the metallic powder into a portion of a part. The system includes a processor configured to steer the beam of energy across the build plane and receive data generated by one or more sensors that detect electromagnetic energy emitted from the build plane when the beam of energy fuses the metallic powder. The received data is converted into one or more parameters that indicate one or more conditions at the build plane while the beam of energy fuses the metallic powder. The one or more parameters are used as input into a machine learning algorithm to detect one or more defects in the fused metallic powder.

公开(公告)号：WO2019028184A1

公开(公告)日：2019-02-07

申请号：PCT/US2018/044884

申请日：2018-08-01

申请人： SIGMA LABS, INC.

发明人： MADIGAN, R. Bruce ,  JACQUEMETTON, Lars ,  WIKLE, Glenn ,  COLA, Mark J. ,  DAVE, Vivek R. ,  BECKETT, Darren ,  CASTRO, Alberto M.

IPC分类号： B23K26/08 ,  B23K26/14 ,  B23K26/34 ,  B33Y50/02 ,  G01N25/72

摘要： This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensor; determining an area of the build plane traversed during the scans; determining a thermal energy density for the area of the build plane traversed by the scans based upon the amount of energy radiated and the area of the build plane traversed by the scans; mapping the thermal energy density to one or more location of the build plane; determining that the thermal energy density is characterized by a density outside a range of density values; and thereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane.

公开(公告)号：WO2019165111A1

公开(公告)日：2019-08-29

申请号：PCT/US2019/019009

申请日：2019-02-21

申请人： SIGMA LABS, INC.

发明人： BECKETT, Darren ,  BETTS, Scott ,  PILTCH, Martin ,  MADIGAN, R. Bruce ,  JACQUEMETTON, Lars ,  WIKLE, Glenn ,  COLA, Mark J. ,  DAVE, Vivek R. ,  CASTRO, Alberto M. ,  FRYE, Roger

IPC分类号： B29C64/153 ,  B29C64/386 ,  B29C64/393 ,  B33Y50/02 ,  B22F3/105

摘要： This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensing system that monitors two discrete wavelengths associated with a blackbody radiation curve of the layer of powder; determining temperature variations for an area of the build plane traversed by the scans based upon a ratio of sensor readings taken at the two discrete wavelengths; determining that the temperature variations are outside a threshold range of values; and thereafter, adjusting subsequent scans of the energy source across or proximate the area of the build plane.

公开(公告)号：WO2021257801A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/037782

申请日：2021-06-17

申请人： SIGMA LABS, INC.

发明人： JACQUEMETTON, Lars ,  PILTCH, Martin S. ,  BECKETT, Darren

IPC分类号： B22F10/22 ,  B22F3/105 ,  B22F10/368 ,  B22F12/20 ,  B22F10/85 ,  B22F12/41 ,  B22F12/49 ,  B22F12/90 ,  B23K26/034 ,  B23K26/0626 ,  B23K26/082 ,  B23K26/342 ,  B33Y30/00 ,  B33Y50/02 ,  G01J5/10

摘要： An additive manufacturing system includes a work region having a layer of metallic powder distributed across at least a portion of the work region. The system further includes a power source, a scanning and focusing system and a processor. The processor is configured to control the power source to emit a beam of energy at a power level and to manipulate the beam of energy across the work region in a plurality of build tracks to form a part from the fused metallic powder. The processor further determines a cooling rate at a termination of each of the plurality of build tracks and controls the power level of the power source in response to the determined cooling rate.

公开(公告)号：WO2021092403A1

公开(公告)日：2021-05-14

申请号：PCT/US2020/059438

申请日：2020-11-06

申请人： SIGMA LABS, INC.

发明人： BECKETT, Darren ,  PILTCH, Martin S. ,  BETTS, Scott ,  CASTRO, Alberto M. ,  ANDERSON, Kevin ,  JACQUEMETTON, Lars ,  AGUILAR, Luis

IPC分类号： B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

摘要： An additive manufacturing system comprises a build plane and an energy source configured to direct energy onto a work region of the build plane. An optical detector is configured to receive one or more optical signals from the work region. An optical filter is positioned between the work region and the optical detector, wherein the optical filter includes a first partially transmissive polarized filter having a first polarization axis and a second partially transmissive polarized filter having a second polarization axis. The first polarization axis is rotationally offset from the second polarization axis approximately 90 degrees. The optical filter improves the signal to noise ratio of the optical sensors..