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公开(公告)号：US20240261890A1
公开(公告)日：2024-08-08
申请号：US18577615
申请日：2022-05-30
申请人： BYSTRONIC LASER AG
CPC分类号： B23K26/032 , B23K31/006 , G01D18/00
摘要： In one aspect, the invention relates to a calibration module (KM) for calibrating a real-time estimator (ES), which is intended for quality estimation of a cutting method using a laser cutting machine (L), comprising: —a load interface (E) for loading a quality estimation result (q′) of the real-time estimator (ES): —a first processor (P1), which is intended to provide a quality measurement result (q) of the cutting edge of the workpiece, wherein the quality measurement result (q) can be provided in particular by detecting (S21) measurement signals of a cutting edge of a finished cut workpiece by means of a measuring device (K): —and wherein a second processor (P2) is intended to compare the loaded quality estimation result (q′) with the quality measurement result (q) and based on the result: is intended to calculate a calibration data set (k) for calibrating the real-time estimator (ES)—an output interface (A) which is intended to output the calculated calibration data set (k).
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公开(公告)号：US20230118061A1
公开(公告)日：2023-04-20
申请号：US17906801
申请日：2021-03-03
申请人： BYSTRONIC LASER AG
发明人： Andreas LUEDI , Roland BADER , Matthias SCHRANZ , Joël BAERTSCHI
摘要： The present invention relates, in one aspect, to a method for process monitoring of a laser machining process for estimating a machining quality, having the following steps, which are carried out in real time during the machining process: —providing (S2) at least one captured first signal sequence with a first feature from the machining zone; —providing (S3) at least one captured second signal sequence with a second feature from the machining zone; —accessing (S4) a trained neural network with at least the recorded first and second signal sequence in order to calculate (S5) a result for estimating the machining quality.
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3.发明申请公开(公告)号：US20220266383A1
公开(公告)日：2022-08-25
申请号：US17617051
申请日：2020-06-05
申请人： Bystronic Laser AG
摘要： A machining apparatus for laser machining a workpiece in a machining zone is provided, having an interface for a machining laser source for generating a machining laser beam with a direction of propagation; an outlet opening for the machining laser beam; and an optical system between the interface and the outlet opening, wherein the optical system has: at least one optical unit that adjusts the focal length of the optical system, and at least one stationary laser beam guiding device with at least one movable surface, wherein the at least one movable surface can be adjusted such that it modifies the focal length of the optical system and/or the beam parameter product of the machining laser beam integrated over time in at least one operating mode. Further provided is a method for laser machining a workpiece.
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公开(公告)号：US20240246173A1
公开(公告)日：2024-07-25
申请号：US18558707
申请日：2022-08-18
申请人： BYSTRONIC LASER AG
发明人： Titus HAAS , Andreas LUEDI , Stefan WITTWER
IPC分类号： B23K26/08
CPC分类号： B23K26/0876
摘要： In one aspect, the present invention relates to a contour checking device for calculating path deviations from a target path of a cutting head of a laser machine tool. The contour checking device comprises a reference texture interface for reading a reference texture along the target path, which is defined in particular for cutting a contour, a controller, which is intended for controlling the laser machine tool in such a way that the cutting head traverses the target path; at least one camera, wherein the controller for controlling the at least one camera is intended for continuously capturing overlapping frames of the reference texture along the traversed path; a processor, which is intended for executing an image processing algorithm for reconstructing the trajectory traversed by the cutting head from the captured overlapping frames of the reference texture; and wherein the processor is intended for calculating deviations between the reconstruction of the path traversed by the cutting head and the target path. The contour checking device also comprises an output interface, which is intended for outputting the calculated deviations.
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公开(公告)号：US20230191530A1
公开(公告)日：2023-06-22
申请号：US18002624
申请日：2021-06-23
申请人： BYSTRONIC LASER AG
发明人： Thomas PINDER , Andreas LUEDI
CPC分类号： B23K26/032 , B23K26/38 , B23K26/0643
摘要： The invention relates to a machining head (100) for the laser machining of a workpiece, having a first interface (102) for a machining laser source for emitting a machining laser beam; a second interface (104) for an illumination light source for emitting a linearly polarised illumination light beam; an exit opening (112) for the machining laser beam and the illumination light beam; a third interface (106) for a detector device for detecting the illumination light beam reflected from the workpiece; and guide optics (116, 117) for at least partial coaxial guiding of the emitted illumination light beam through the exit opening and of the illumination light beam reflected from the workpiece, through the exit opening, to the third interface. The guide optics have a polarising beam splitter (116) for guiding at least part of the emitted linearly polarised illumination light beam in the direction of the exit opening; and a retardation plate (117) disposed between the polarising beam splitter and the exit opening. The invention also relates to a method for laser machining of a workpiece.
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公开(公告)号：US20220143756A1
公开(公告)日：2022-05-12
申请号：US17594992
申请日：2020-06-05
申请人： BYSTRONIC LASER AG
IPC分类号： B23K26/38 , B23K26/082
摘要： According to the present application, a machining apparatus (10) for the laser machining of a workpiece (12) in a machining zone (13) is provided, having a first interface (14) for a machining laser source for generating a machining laser beam (15), a second interface (16) for a detector device (for detecting radiation (17) emitted by the machining zone (13); an outlet opening (18) for the machining laser beam (14); and first and second laser beam guiding devices (20, 22), wherein the first laser beam guiding device (20), 20a, 20b) is arranged and designed such that it guides the machining laser beam (14) to the second laser beam guiding device (22) and dynamically moves the machining laser beam (14), and the second laser beam guiding device (22) is arranged and designed such that it guides the dynamically moved machining laser beam (14) through the outlet opening (18) and at least partially guides the radiation (17) emitted by the machining zone (13) through the outlet opening to the second interface (16). Further provided is a method for the laser machining of a workpiece (12).
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公开(公告)号：US20230286078A1
公开(公告)日：2023-09-14
申请号：US18249193
申请日：2021-10-15
申请人： BYSTRONIC LASER AG
发明人： Christoph FAHRNI , Stefan KALTENBACH , Titus HAAS , Andreas LUEDI
IPC分类号： B23K26/042 , B23K10/00
CPC分类号： B23K26/042 , B23K10/006
摘要： A beam machining head (10; 100; 200) for beam cutting of a workpiece is provided, having an interface (12) for an energy beam source (14; 14, 201) for generating a focused machining energy beam (15; 206) selected from a particle beam source, a fuel fluid beam source, a plasma beam source and/or a source for electromagnetic radiation; an exit opening (16) for the machining energy beam bounded by an opening edge (18); an optical detector unit (19) for recording at least one image of an electromagnetic radiation (17) emitted from the workpiece (11) through the exit opening into the beam machining head (10; 100; 200) and induced in the workpiece by the machining energy beam; and a monitoring unit (30) connected in a data-transmitting manner to the optical detector unit for monitoring a positional relationship between a centre of the emitted electromagnetic radiation and the exit opening, wherein the monitoring unit (30) has: a first determination module for determining at least one position (180; 182) of the exit opening in the at least one image; a second determination module for determining at least one position (170) of the centre of the emitted electromagnetic radiation in the at least one image; and a third determination module for determining the positional relationship between the at least one position (170) of the centre of the emitted electromagnetic radiation and the at least one position (180; 182) of the exit opening (16). A beam machining device and a method for beam cutting are further disclosed.
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公开(公告)号：US20230013251A1
公开(公告)日：2023-01-19
申请号：US17787294
申请日：2020-12-22
申请人： Bystronic Laser AG
摘要： An optical unit fora laser beam for laser machining of a workpiece is disclosed. With particular application to a laser beam, the optical unit may be applied to a high-power laser beam and comprise an optical element for the optical imaging of the laser beam, and two protective glasses that are transparent for the laser beam, the outer edges of which protective glasses being enclosed in an airtight manner by a holder in such a way that they form an interior space with the holder, the optical element also being arranged in the interior space. A laser machining device is also disclosed.
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