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    DETERMINING A POSITION OF A BUILDING PLATFORM WITHIN A PROCESS CHAMBER OF AN ADDITIVE MANUFACTURING DEVICE
    13.
    发明公开
    DETERMINING A POSITION OF A BUILDING PLATFORM WITHIN A PROCESS CHAMBER OF AN ADDITIVE MANUFACTURING DEVICE 审中-公开

    公开(公告)号：EP3970883A1

    公开(公告)日：2022-03-23

    申请号：EP20196956.5

    申请日：2020-09-18

    申请人： Trumpf Sisma S.r.l.

    发明人： Cavalcabo, Guglielmo ,  Mantoan, Elia ,  Boron, Mattia

    IPC分类号： B22F10/28 ,  B22F10/31 ,  B22F10/80 ,  B22F12/30 ,  B22F12/90 ,  B29C64/153 ,  B29C64/245 ,  B29C64/393 ,  G05B19/401 ,  G01B11/03 ,  G01B21/04 ,  B23K26/342 ,  B23K26/70 ,  B29C64/182 ,  B33Y50/00 ,  A61C13/00

    摘要： A method relates to determining a position data of a building platform (37) provided at a support plate (31) within a process chamber (3) of an AM device (1). The position data relates to a coordinate system (X, Y, Z) of the scanner optics (5). The support plate (31) includes building platform holes (33) for building platform holders (35) for building platform (37), optically detectable reference marks (39) on a surface (31A) of the support plate (31), and at least two receptors (41) for laser target parts (43). The method comprises:
    - obtaining a first position dataset including a precision position of at least one building platform holder (35) in one of the building platform holes (33) with respect to the reference marks (39);
    - when the support plate (31) is mounted in the process chamber (3) and the building platform (37) is inserted into the at least one building platform holder (35), marking a laser mark on the laser target parts (43) in the receptors (41), respective laser mark positions defined in the coordinate system (X, Y, Z) of the scanner optics (5);
    - acquiring a pre-manufacturing image of the support plate (31) having the laser marks when mounted within the process chamber (3);
    - obtaining from the pre-manufacturing image a second position dataset including positions of the reference marks (39) with respect to the laser marks; and
    - determining the position data of the building platform (37) within the coordinate system (X, Y, Z) of the scanner optics (5) from the first position dataset, the second position dataset, and the laser mark positions.