公开(公告)号：US11679551B2

公开(公告)日：2023-06-20

申请号：US16289076

申请日：2019-02-28

Applicant: General Electric Company

Inventor： Brian Scott McCarthy ,  Dean Andrew Snelling, Jr. ,  Thomas Adcock ,  Donnell Crear ,  Michael Evans Graham

IPC: B33Y50/02 ,  B29C64/153 ,  B29C64/393 ,  B29C64/268 ,  B22F10/20 ,  B22F12/90 ,  B22F10/31 ,  B33Y10/00 ,  B33Y30/00 ,  B22F12/45 ,  B22F12/49 ,  B22F12/60

CPC classification number: B33Y50/02 ,  B22F10/20 ,  B22F10/31 ,  B22F12/90 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393 ,  B22F12/45 ,  B22F12/49 ,  B22F12/60 ,  B33Y10/00 ,  B33Y30/00

Abstract: A system for additive manufacturing machine energy beam alignment error compensation includes, a calibration table having x-y planar offsets to correct laser alignment errors representing energy beam positional offsets between beam-steering commanded energy beam locations and fiducial marks generated on a burn-paper, a recoater mechanism that distributes successive layers of powder, one or more sensors monitoring the powderbed surface proximal to the beam scan unit, and a processor unit configured to perform a method. The method including collecting sensor data representing height variations across at least a portion of the powderbed surface, deriving dimensional data from the collected data, analyzing the dimensional data to determine a distribution of differences between the powderbed surface and a reference plane containing the burn-paper when the fiducial marks were generated, and calculating z-axis calibration offset points for inclusion in the calibration table x-y planar offsets. A method and a non-transitory medium are also disclosed.

公开(公告)号：US20230278282A1

公开(公告)日：2023-09-07

申请号：US18317437

申请日：2023-05-15

Applicant: General Electric Company

Inventor： Brian Scott McCarthy ,  Dean Andrew Snelling, JR. ,  Thomas Adcock ,  Donnell Crear ,  Michael Evans Graham

IPC: B29C64/153 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/268 ,  B22F10/20 ,  B22F12/90 ,  B22F10/31

CPC classification number: B29C64/153 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/268 ,  B22F10/20 ,  B22F12/90 ,  B22F10/31 ,  B33Y10/00

Abstract: A system for additive manufacturing machine energy beam alignment error compensation includes, a calibration table having x-y planar offsets to correct laser alignment errors representing energy beam positional offsets between beam-steering commanded energy beam locations and fiducial marks generated on a burn-paper, a recoater mechanism that distributes successive layers of powder, one or more sensors monitoring the powderbed surface proximal to the beam scan unit, and a processor unit configured to perform a method. The method including collecting sensor data representing height variations across at least a portion of the powderbed surface, deriving dimensional data from the collected data, analyzing the dimensional data to determine a distribution of differences between the powderbed surface and a calibration plane used for a first spatial calibration, and calculating z-axis calibration offset points for inclusion in the calibration table x-y planar offsets. A method and a non-transitory medium are also disclosed.