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.

公开(公告)号：EP3907021A1

公开(公告)日：2021-11-10

申请号：EP20173271.6

申请日：2020-05-06

申请人： Trumpf Sisma S.r.l. ,  TRUMPF Laser- und Systemtechnik GmbH

发明人： Cavalcabo, Guglielmo ,  Mantoan, Elia ,  Krauter, Johann ,  Blickle, Valentin ,  Sailer, Christof

IPC分类号： B22F3/105 ,  B29C64/153 ,  B29C64/282 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

摘要： A method of automated alignment of scanning optics (17A, 17B) includes the steps:
irradiating (step 101) an object area (3A) of a layer of a powdered material (5) provided on a building platform (11) with at least one irradiation beam (15B);
irradiating (step 103) a calibration area (21A) of the layer of the powdered material (5) with at least one irradiation beam (15B);
guiding (step 105A) the first irradiation beam (15A) with the first scanning optic (17A) over the intermediate top face (31) and thereby melting a first calibration pattern (37) into the intermediate top face (31);
guiding (step 105B) the second irradiation beam (15B) with the second scanning optic (17B) over the intermediate top face (31) and thereby melting a second calibration pattern (39) into the intermediate top face (31);
acquiring (step 107) at least one image (35, 51A, 51B) of the intermediate top face (31);
using the at least one image (35, 51A, 5IB), identifying (step 109) image points related to the geometrical features of the calibration patterns;
from the image points, deriving (step 111) a spatial offset (O) between the second geometrical features; and
aligning (step 113) at least one of scanning optic (17A) under consideration of the spatial offset (O).