Patents by Inventor Andreas Luedi

Andreas Luedi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12194563
    Abstract: The present disclosure relates to a machining apparatus for laser machining a workpiece, such as laser cutting. The apparatus includes a machining laser source for generating a machining laser beam; an illumination laser source having a power for generating an illumination laser beam having a spectral range; an outlet opening for the machining laser beam and the illumination laser beam; and a laser beam guiding device which is designed such that the machining laser beam and the illumination laser beam emerge coaxially through the outlet opening; wherein at least one element selected from the power of the illumination laser source and the spectral range of the illumination laser beam is selected such that the illumination by the illumination laser beam is brighter than a self-emission of the workpiece in a machining region during laser machining. Additionally, a method for laser machining a workpiece is also included in the present disclosure.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: January 14, 2025
    Assignee: BYSTRONIC LASER AG
    Inventor: Andreas Luedi
  • Publication number: 20240261890
    Abstract: 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).
    Type: Application
    Filed: May 30, 2022
    Publication date: August 8, 2024
    Inventors: Andreas LUEDI, Roland BADER, Stefan Alfons JACOBI
  • Publication number: 20240246173
    Abstract: 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.
    Type: Application
    Filed: August 18, 2022
    Publication date: July 25, 2024
    Inventors: Titus HAAS, Andreas LUEDI, Stefan WITTWER
  • Patent number: 12023755
    Abstract: 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.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 2, 2024
    Inventors: Simon Scheidiger, Andreas Luedi, Michael Berger, Martin Mumenthaler
  • Patent number: 11975402
    Abstract: 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
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: May 7, 2024
    Assignee: BYSTRONIC LASER AG
    Inventors: Christoph Fahrni, Stefan Kaltenbach, Titus Haas, Andreas Luedi
  • Patent number: 11786988
    Abstract: A machining head for the laser machining of a workpiece. The machining head may include a first interface for a machining laser source for emitting a machining laser beam, a second interface for an illumination light source for emitting an illumination light beam, an exit opening for the machining laser beam and the illumination light beam, a third interface for a detector device for detecting the illumination light beam reflected from the workpiece, and guide optics 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 for guiding at least part of the emitted illumination light beam in the direction of the exit opening, and a retardation plate between the polarising beam splitter and the exit opening.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: October 17, 2023
    Assignee: BYSTRONIC LASER AG
    Inventors: Thomas Pinder, Andreas Luedi
  • Publication number: 20230286078
    Abstract: 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
    Type: Application
    Filed: October 15, 2021
    Publication date: September 14, 2023
    Inventors: Christoph FAHRNI, Stefan KALTENBACH, Titus HAAS, Andreas LUEDI
  • Patent number: 11731212
    Abstract: 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.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: August 22, 2023
    Assignee: BYSTRONIC LASER AG
    Inventors: Simon Scheidiger, Martin Mumenthaler, Andreas Luedi
  • Publication number: 20230191530
    Abstract: 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.
    Type: Application
    Filed: June 23, 2021
    Publication date: June 22, 2023
    Inventors: Thomas PINDER, Andreas LUEDI
  • Patent number: 11651484
    Abstract: A method for process monitoring of a laser machining process for estimating a machining quality is dicloses. The method may include steps, which are carried out in real time during the machining process of providing at least one captured first signal sequence with a first feature form a machining zone, providing at least one captured second signal sequence with a second feature from the machining zone, and accessing a trained neural network with at least the recorded first and second signal sequences in order to calculate a result for estimating the machining quality.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: May 16, 2023
    Assignee: BYSTRONIC LASER AG
    Inventors: Andreas Luedi, Roland Bader, Matthias Schranz, Joël Baertschi
  • Publication number: 20230118061
    Abstract: 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.
    Type: Application
    Filed: March 3, 2021
    Publication date: April 20, 2023
    Inventors: Andreas LUEDI, Roland BADER, Matthias SCHRANZ, Joël BAERTSCHI
  • Publication number: 20230013251
    Abstract: 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.
    Type: Application
    Filed: December 22, 2020
    Publication date: January 19, 2023
    Inventors: Simon SCHEIDIGER, Martin MUMENTHALER, Andreas LUEDI
  • Patent number: 11478879
    Abstract: 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).
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: October 25, 2022
    Assignee: BYSTRONIC LASER AG
    Inventors: Simon Scheidiger, Andreas Luedi, Martin Mumenthaler, Markus Steinlin
  • Patent number: 11471979
    Abstract: A machining apparatus for laser machining 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), an outlet opening (18) for the machining laser beam (15), In an optical system between the first interface (14) and the outlet opening (18), which has at least one laser beam guiding device (22) having at least one movable surface (24) and at least one actuator (26), with which the movable surface (24) is dynamically adjustable, and a cooling device (28) for cooling the at least one actuator (26), wherein the cooling device (28) has at least one primary circuit (30) through which a first cooling fluid can flow without contact with the actuator (26). Furthermore, a set of parts for a machining apparatus for laser machining a workpiece (12) and a method of laser machining a workpiece (12) using such machining apparatus are also provided.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: October 18, 2022
    Assignee: BYSTRONIC LASER AG
    Inventors: Simon Scheidiger, Andreas Luedi, Roland Zollinger, Martin Mumenthaler
  • Patent number: 11446763
    Abstract: The present disclosure relates to a metal machining apparatus having a gas nozzle for generating a gas jet. The apparatus also has a nozzle exit opening on one end on the outside; an electronic camera for acquiring a digital image of the end of the gas nozzle with the nozzle exit opening. The apparatus also includes a pattern recognition module for mapping the digital image to at least one nozzle pattern from the group of nozzle state and/or nozzle type.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: September 20, 2022
    Assignee: BYSTRONIC LASER AG
    Inventors: Andreas Luedi, Christoph Fahmi, Kevin Messer
  • Publication number: 20220266383
    Abstract: 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.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 25, 2022
    Inventors: Simon Scheidiger, Andreas LUEDI, Michael BERGER, Martin MUMENTHALER
  • Publication number: 20220143756
    Abstract: 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).
    Type: Application
    Filed: June 5, 2020
    Publication date: May 12, 2022
    Inventors: Simon SCHEIDIGER, Andreas LUEDI, Martin MUMENTHALER, Markus STEINLIN
  • Publication number: 20220040789
    Abstract: The present disclosure relates to a metal machining apparatus having a gas nozzle for generating a gas jet. The apparatus also has a nozzle exit opening on one end on the outside; an electronic camera for acquiring a digital image of the end of the gas nozzle with the nozzle exit opening. The apparatus also includes a pattern recognition module for mapping the digital image to at least one nozzle pattern from the group of nozzle state and/or nozzle type.
    Type: Application
    Filed: December 18, 2019
    Publication date: February 10, 2022
    Inventors: Andreas Luedi, Christoph Fahmi, Kevin Messer
  • Publication number: 20220040795
    Abstract: A machining apparatus for laser machining 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), an outlet opening (18) for the machining laser beam (15), In an optical system between the first interface (14) and the outlet opening (18), which has at least one laser beam guiding device (22) having at least one movable surface (24) and at least one actuator (26), with which the movable surface (24) is dynamically adjustable, and a cooling device (28) for cooling the at least one actuator (26), wherein the cooling device (28) has at least one primary circuit (30) through which a first cooling fluid can flow without contact with the actuator (26). Furthermore, a set of parts for a machining apparatus for laser machining a workpiece (12) and a method of laser machining a workpiece (12) using such machining apparatus are also provided.
    Type: Application
    Filed: August 14, 2020
    Publication date: February 10, 2022
    Inventors: Simon SCHEIDIGER, Andreas LUEDI, Roland ZOLLINGER, Martin MUMENTHALER
  • Publication number: 20210354235
    Abstract: The present disclosure relates to a machining apparatus for laser machining a workpiece, such as laser cutting. The apparatus includes a machining laser source for generating a machining laser beam; an illumination laser source having a power for generating an illumination laser beam having a spectral range; an outlet opening for the machining laser beam and the illumination laser beam; and a laser beam guiding device which is designed such that the machining laser beam and the illumination laser beam emerge coaxially through the outlet opening; wherein at least one element selected from the power of the illumination laser source and the spectral range of the illumination laser beam is selected such that the illumination by the illumination laser beam is brighter than a self-emission of the workpiece in a machining region during laser machining. Additionally, a method for laser machining a workpiece is also included in the present disclosure.
    Type: Application
    Filed: October 25, 2019
    Publication date: November 18, 2021
    Inventor: Andreas Luedi