公开(公告)号：US20210387261A1

公开(公告)日：2021-12-16

申请号：US17251700

申请日：2018-06-13

Applicant: NIKON CORPORATION ,  TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Koki TAKESHITA

IPC: B22F10/80 ,  G06T7/00 ,  B33Y50/00 ,  B22F12/90 ,  B29C64/386

Abstract: A calculation device used in a manufacturing apparatus for producing a 3D manufactured object from a solidified layer formed by heating a layer-shaped material layer formed of a powder material by irradiation with an energy beam includes a detection unit configured to obtain a state of the material layer based on a shape of the formed material layer, and an output unit configured to output information on the state of the material layer obtained by the detection unit to set a manufacturing condition of the manufacturing apparatus.

公开(公告)号：US20210268586A1

公开(公告)日：2021-09-02

申请号：US17251719

申请日：2018-06-13

Applicant: NIKON CORPORATION ,  TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Koki TAKESHITA

IPC: B22F10/85 ,  B22F12/41 ,  B22F10/368 ,  B22F12/49 ,  B22F12/90 ,  B33Y50/02

Abstract: A calculation device used in a manufacturing apparatus for producing a 3D manufactured object from a solidified layer formed by heating a powder material by irradiation with an energy beam, includes a detection unit configured to obtain a state of at least a part of a predetermined region including a melted portion in which the powder material melts by being heated by irradiation with an energy beam, and an output unit configured to output state information based on the state obtained by the detection unit to change a manufacturing condition of the manufacturing apparatus.

公开(公告)号：US20230234140A1

公开(公告)日：2023-07-27

申请号：US17999570

申请日：2021-04-21

Applicant: Technology Research Association for Future Additive Manufacturing

Inventor： Makiko IEDA ,  Chika KATO ,  Toshi-Taka IKESHOJI ,  Hideki KYOGOKU ,  Koki TAKESHITA

IPC: B22F12/90 ,  B22F10/28 ,  B22F10/38 ,  B22F10/85 ,  B29C64/153 ,  B29C64/393 ,  G01B11/30

CPC classification number: B22F12/90 ,  B22F10/28 ,  B22F10/38 ,  B22F10/85 ,  B29C64/153 ,  B29C64/393 ,  G01B11/303 ,  B33Y10/00

Abstract: This invention is directed to a method of efficiently improving a relative density of a shaped object using an evaluation criterion having a higher correlation with a density of an object to be shaped. The method according to this invention includes acquiring three-dimensional point group data of a surface of a shaping object, calculating at least one of three-dimensional surface texture parameters extended to a plane region using the three-dimensional point group data, and evaluating a quality of the object to be shaped using the at least one of the three-dimensional surface texture parameters.