Patents by Inventor Tim Hesse

Tim Hesse 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: 12275087
    Abstract: A method of welding two metal sheets includes providing a first sheet having a first weld surface and a second sheet having a second weld surface. The first sheet has a coating includes an alloy of aluminum and silicon on the first weld surface. The method further includes irradiating the first weld surface and the second weld surface with a laser beam. The laser beam has an inner core and an outer ring with different intensity profiles. The laser beam is moved with a wobbling motion in a feed direction along an imaginary feed line and perpendicular to the imaginary feed line. A path of the laser beam along the imaginary feed line is of a periodic shape. A width of the path perpendicular to the imaginary feed line is greater than a length of a period of the path along the imaginary feed line.
    Type: Grant
    Filed: June 12, 2024
    Date of Patent: April 15, 2025
    Assignee: TRUMPF LASER- UND SYSTEMTECHNIK GMBH
    Inventors: Tim Hesse, Nicolai Speker
  • Publication number: 20250075333
    Abstract: A laser system for laser metal deposition includes a laser source for generating a laser beam having a wavelength in a range between 0.4 ?m and 1.5 ?m, and a jet nozzle for directing the laser beam at a workpiece surface and for directing a powder jet including a pulverulent material at the laser beam and at the workpiece surface. The laser beam exiting from the jet nozzle has a reduced intensity in a core region in comparison with a border region. The pulverulent material includes hard-material particles.
    Type: Application
    Filed: October 23, 2024
    Publication date: March 6, 2025
    Inventors: Tim Hesse, Björn Sautter, Andreas Scholz
  • Patent number: 12214444
    Abstract: The present disclosure relates to methods and devices for monitoring a welding process for welding at least one glass workpiece to another workpiece, the workpieces being welded together in a process zone that is exposed to a processing beam, e.g., to a laser beam, such as an ultra-short-pulse laser beam, wherein radiation emitted by the process zone and originating from at least one of the workpieces is detected in a spatially resolved manner.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: February 4, 2025
    Assignee: TRUMPF Laser- und Systemtechnik GmbH
    Inventors: Sebastian Hecker, Tim Hesse
  • Publication number: 20240399502
    Abstract: A laser cladding method for producing a coating layer on a surface of a component includes applying a filler material along a helical or spiral-shaped processing trajectory on the surface of the component, and heating the filler material and the component along the processing trajectory by using a laser beam, so that when the filler material strikes the surface, least one coating track is created on the surface having a specified track width. At least two turns of the at least one coating track at least partially overlap with one another along the track width.
    Type: Application
    Filed: August 16, 2024
    Publication date: December 5, 2024
    Inventors: Tim Hesse, Nicolai Speker, Bjoern Sautter, Andreas Scholz
  • Publication number: 20240401205
    Abstract: A laser cladding method includes directing a filler material in a pulverulent form along a respective working trajectory onto each respective surface of two mutually opposite surfaces of a component, and heating the filler material and the component by directing a respective laser beam along the respective working trajectory so that the filler material binds to the component as the filler material meets the respective surface, thereby producing coating layers on the two mutually opposite surfaces at least partly at a same time.
    Type: Application
    Filed: August 9, 2024
    Publication date: December 5, 2024
    Inventors: Tim Hesse, Andreas Scholz, Nicolai Speker, Bjoern Sautter
  • Patent number: 12157183
    Abstract: The present disclosure relates to methods and systems for monitoring a welding process for welding at least one glass workpiece to another workpiece, e.g., also made of glass, wherein a weld seam is formed in the workpieces in a process zone that is exposed to a pulsed processing beam, e.g., to a pulsed laser beam, such as an ultra-short-pulse laser beam, wherein the radiation emitted by the process zone is detected in a time-resolved manner.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: December 3, 2024
    Assignee: TRUMPF Laser- und Systemtechnik GmbH
    Inventors: Sebastian Hecker, Tim Hesse, Michael Scharun, Manuel Schindler, Kristian Alber
  • Publication number: 20240383068
    Abstract: A method for joining two components of a battery includes welding the two components to one another by scanner welding using a processing beam provided by a welding apparatus, and guiding a measurement beam of an OCT sensor system optically coaxially with the processing beam while the welding apparatus is performing the scanner welding. The measurement beam and the processing beam are guided at a substantially matching angle of incidence relative to at least one processing surface of the two components.
    Type: Application
    Filed: July 3, 2024
    Publication date: November 21, 2024
    Inventors: Tim Hesse, Nicolai Speker, Patrick Haug, Philipp Scheible
  • Publication number: 20240375208
    Abstract: A method for determining at least one geometrical outcome variable and/or at least one quality feature of a weld seam on at least one workpiece includes scanning the weld seam using a measurement beam during laser beam welding of the weld seam in order to acquire data points. The measurement beam is moved along at least one measurement path on the weld seam. The acquired data points indicate a height and/or a depth of the weld seam in relation to a workpiece surface of the at least one workpiece. The method further includes determining the at least one geometrical outcome variable and/or the at least one quality feature by evaluating the acquired data points.
    Type: Application
    Filed: July 17, 2024
    Publication date: November 14, 2024
    Inventors: Patrick Haug, Tim Hesse, Nicolai Speker, Philipp Scheible
  • Patent number: 12142976
    Abstract: A method for joining copper hairpins includes providing at least two ends to be joined to one another of the copper hairpins, and joining the copper hairpins. The copper hairpins are joined by laser beam welding with a machining beam having a wavelength of less than 1000 nm.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: November 12, 2024
    Assignee: TRUMPF Laser- und Systemtechnik GmbH
    Inventors: Tim Hesse, Oliver Bocksrocker
  • Publication number: 20240367265
    Abstract: A method of welding two metal sheets includes providing a first sheet having a first weld surface and a second sheet having a second weld surface. The first sheet has a coating includes an alloy of aluminum and silicon on the first weld surface. The method further includes irradiating the first weld surface and the second weld surface with a laser beam. The laser beam has an inner core and an outer ring with different intensity profiles. The laser beam is moved with a wobbling motion in a feed direction along an imaginary feed line and perpendicular to the imaginary feed line. A path of the laser beam along the imaginary feed line is of a periodic shape. A width of the path perpendicular to the imaginary feed line is greater than a length of a period of the path along the imaginary feed line.
    Type: Application
    Filed: June 12, 2024
    Publication date: November 7, 2024
    Inventors: Tim Hesse, Nicolai Speker
  • Publication number: 20240300049
    Abstract: A laser build-up welding method includes directing a powdered material and a laser beam onto a workpiece surface of a workpiece at an angle to one another. The powdered material is at least partially heated in an interaction zone with the laser beam above the workpiece surface and is welded onto the workpiece surface along a predefined contour, the laser beam has a wavelength that ranges between 0.4 ?m and 1.1 ?m. The laser beam within the interaction zone has an intensity in its border region that is greater than an intensity in the core region of the laser beam, so that the powdered material is subjected to the greater intensity of the border region when entering the interaction zone.
    Type: Application
    Filed: May 17, 2024
    Publication date: September 12, 2024
    Inventors: Bjoern Sautter, Nicolai Speker, Alejandro Zamorano Reichold, Andreas Scholz, Tim Hesse
  • Patent number: 11992897
    Abstract: An apparatus for laser machining a workpiece in a machining plane includes a first laser machining unit for forming a first focal zone which extends in a first main direction of extent, and at least one further laser machining unit for forming at least one further focal zone which extends in a further main direction of extent oriented transversely to the first main direction of extent. The first focal zone and the at least one further focal zone are spaced apart from one another parallel to the machining plane at a work distance. The first laser machining unit and the at least one further laser machining unit are movable in an advancement direction that is oriented parallel to the machining plane. The workpiece comprises a material that is transparent to a laser beam which respectively forms the first focal zone and the at least one further focal zone.
    Type: Grant
    Filed: August 1, 2023
    Date of Patent: May 28, 2024
    Assignee: TRUMPF LASER-UND SYSTEMTECHNIK GMBH
    Inventors: Tim Hesse, Daniel Flamm, Myriam Kaiser
  • Publication number: 20240165739
    Abstract: A method for powder injection monitoring during laser beam buildup welding includes irradiating a workpiece using a work laser beam, conveying powder through at least one powder nozzle to generate a powder jet, illuminating the powder jet transversely to a jet direction of the powder jet, and taking at least one picture of the powder jet by using a camera. A viewing direction of the camera extends coaxially to the jet direction of the powder jet. The method further includes performing an actual assessment of the at least one picture by an algorithm, and outputting a message upon determining that a predefined deviation of the actual assessment from a target assessment is exceeded.
    Type: Application
    Filed: January 26, 2024
    Publication date: May 23, 2024
    Inventors: Benedikt Wessinger, Marco Opitz, Bjoern Sautter, Nicolai Speker, Tim Hesse
  • Publication number: 20240109150
    Abstract: An apparatus for laser processing of a workpiece is provided. The workpiece includes a transparent material. The apparatus includes a beam shaping device for forming a focus zone from an input laser beam. The focus zone is formed in elongate fashion in relation to a longitudinal axis. The focus zone has, in a plain perpendicular to the longitudinal axis, an asymmetric cross-section with a preferred direction. The apparatus further includes an actuating device for altering the preferred direction during the laser processing of the workpiece, and a control device for controlling the actuating device based on a predefined assignment specification in order to control the preferred direction by open-loop control or closed-loop control during the laser processing of the workpiece.
    Type: Application
    Filed: December 1, 2023
    Publication date: April 4, 2024
    Inventors: Jonas Kleiner, Tim Hesse, Daniel Flamm
  • Publication number: 20240082955
    Abstract: A method for coating a rotating surface region of a workpiece by laser build-up welding includes fusing a powdery coating material prior to impact on the workpiece in a laser beam that is directed at the surface region, capturing a spatially resolved intensity profile of thermal radiation emitted by the workpiece, comparing at least one property of the intensity profile with at least one predefined target value, and modifying at least one parameter of a coating procedure based on a result of the comparison.
    Type: Application
    Filed: November 24, 2023
    Publication date: March 14, 2024
    Inventors: Bjoern Sautter, Benedikt Wessinger, Marco Opitz, Andreas Scholz, Nicolai Speker, Tim Hesse
  • Publication number: 20240033848
    Abstract: A method for welding bar-type conductors includes arranging at least two bar-type conductors in partially overlapping fashion, and welding the at least two bar-type conductors to one another by using a processing laser beam. The processing laser beam traverses a welding contour relative to the bar-type conductors. The traversing of the welding contour includes an initial phase, a main phase and an end phase. In the initial phase, in a partial region of a beam cross section of the processing laser beam, an intensity of the processing laser beam, which is spatially averaged over the partial region, is increased over time. In the main phase, the spatially averaged intensity, which is achieved at the end of the initial phase, is kept at least substantially constant over time. In the end phase, the spatially averaged intensity, starting from the intensity at the end of the main phase, is reduced over time.
    Type: Application
    Filed: October 11, 2023
    Publication date: February 1, 2024
    Inventors: Oliver Bocksrocker, Nicolai Speker, Tim Hesse
  • Publication number: 20240024983
    Abstract: A method for laser welding includes arranging two bar-type conductors next to one another with a partial overlap, and welding the two bar-type conductors to one another using a processing laser beam. A weld bead is formed on a common base surface of the bar-type conductors. During the welding, the processing laser beam is guided so that a welding contour is placed relative to the bar-type conductors. An advancing rate of the processing laser beam along the welding contour is selected such that the weld bead has a non-liquid oxide skin inside which liquid bar-type conductor material accumulates. The non-liquid oxide skin is partially broken open by the processing laser beam only on an upwardly facing end face of the weld bead, and remains undamaged in a surrounding region of the weld bead that extends downward from the upwardly facing end face and around the entire weld bead.
    Type: Application
    Filed: October 6, 2023
    Publication date: January 25, 2024
    Inventors: Oliver Bocksrocker, Nicolai Speker, Tim Hesse, Matthias Beranek
  • Publication number: 20240017352
    Abstract: An apparatus for laser machining a workpiece in a machining plane includes a first laser machining unit for forming a first focal zone which extends in a first main direction of extent, and at least one further laser machining unit for forming at least one further focal zone which extends in a further main direction of extent oriented transversely to the first main direction of extent. The first focal zone and the at least one further focal zone are spaced apart from one another parallel to the machining plane at a work distance. The first laser machining unit and the at least one further laser machining unit are movable in an advancement direction that is oriented parallel to the machining plane. The workpiece comprises a material that is transparent to a laser beam which respectively forms the first focal zone and the at least one further focal zone.
    Type: Application
    Filed: August 1, 2023
    Publication date: January 18, 2024
    Inventors: Tim Hesse, Daniel Flamm, Myriam Kaiser
  • Patent number: 11786989
    Abstract: Laser beam welding a workpiece includes: generating first and second beam areas on the workpiece by first and second laser beams, respectively. The beam areas are guided in a feed direction relative to the workpiece. Centroids of the beam areas are not coinciding. The first beam area runs ahead of the second beam area. A length of the first beam area, measured transversely to the feed direction, is greater than or equal to that of the second. A surface area of the first beam area is greater than that of the second. A width of the first beam area, measured in the feed direction, is greater than or equal to that of the second. A laser power of the first laser beam is greater than that of the second. The second laser beam is irradiated into a weld pool generated by the first laser beam.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: October 17, 2023
    Assignee: TRUMPF LASER- UND SYSTEMTECHNIK GMBH
    Inventors: Patrick Haug, Nicolai Speker, Marco Opitz, Tim Hesse
  • Publication number: 20230302574
    Abstract: A method for severing an at least partially transparent material includes focusing ultrashort laser pulses, as individual laser pulses and/or as pulse trains, in the material so that a resulting modification zone elongated in a beam propagation direction enters the material and penetrates at least one surface of the material. Each pulse train comprises multiple sub-laser pulses, The method further includes introducing a plurality of material modifications along a severing line into the material via the laser pulses, and severing the material along the severing line, A pulse energy of the individual laser pulses or a sum of pulse energies of the sub-laser pulses is in a range from 500 ?J to 50 mJ. A length of the modification zone in the beam propagation direction is greater than a thickness of the material.
    Type: Application
    Filed: June 2, 2023
    Publication date: September 28, 2023
    Inventors: Jonas Kleiner, Daniel Flamm, Tim Hesse, Malte Kumkar, Myriam Kaiser