公开(公告)号：US12235462B2

公开(公告)日：2025-02-25

申请号：US17956843

申请日：2022-09-30

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Thomas Zeller ,  Christoph Tillkorn ,  Julian Hellstern ,  Andreas Heimes ,  Christian Lingel ,  Christoph Irion ,  Michael Jenne

IPC: G02B27/09

Abstract: An optical arrangement converts a laser beam into a line-type beam having a line-type beam cross-section that extends along a line direction with a non-vanishing intensity. The arrangement has: reshaping optics having: an input aperture through which the laser beam is radiated in; and an elongate output aperture, the reshaping optics being configured such that the laser beam radiated in is converted into a beam packet with beam segments that emerge through the output aperture; homogenization optics, which contribute to the conversion of the beam packet into the line-type output beam, and by which different beam segments are mixed and superposed along the line direction; and redirection optics configured to redirect the laser beam such that an incidence position/direction of laser beam on the input aperture is changed in dependence on time.

公开(公告)号：US20250058527A1

公开(公告)日：2025-02-20

申请号：US18937083

申请日：2024-11-05

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Valentin Blickle ,  Nicolai Essig

IPC: B29C64/393 ,  B29C64/153 ,  B29C64/371 ,  B33Y30/00 ,  B33Y50/00

Abstract: A method for operating a system for layered manufacturing of an object on a base element includes A) arranging the base element on a piston plate, B) carrying out a preliminary measurement in the system, wherein a measurement pattern on an upper side of the base element is measured, C) based on data from the preliminary measurement, preparing and carrying out the layered manufacturing of the object, and A′), after the step A) and before the step B), in a treatment region of the base element, roughen a surface of the base element with a working laser in the system. In the step B), the measurement pattern includes a light pattern projected into the roughened treatment region, and/or an edge structure with a plurality of edges. At least a part of the plurality of edges of the edge structure is in the roughened treatment region.

公开(公告)号：US12214444B2

公开(公告)日：2025-02-04

申请号：US17318263

申请日：2021-05-12

Applicant: TRUMPF Laser-und Systemtechnik GmbH

Inventor： Sebastian Hecker ,  Tim Hesse

IPC: B23K26/324 ,  B23K26/03 ,  B23K26/0622 ,  B23K26/244 ,  B23K26/26 ,  B23K26/57 ,  B23K31/12 ,  B23K101/18 ,  B23K103/00 ,  C03B23/203 ,  G06T7/00 ,  G06T7/73

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.

公开(公告)号：US20240401205A1

公开(公告)日：2024-12-05

申请号：US18798856

申请日：2024-08-09

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Tim Hesse ,  Andreas Scholz ,  Nicolai Speker ,  Bjoern Sautter

IPC: C23C24/08

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.

公开(公告)号：US20240399502A1

公开(公告)日：2024-12-05

申请号：US18806734

申请日：2024-08-16

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Tim Hesse ,  Nicolai Speker ,  Bjoern Sautter ,  Andreas Scholz

IPC: B23K26/342

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.

公开(公告)号：US20240375208A1

公开(公告)日：2024-11-14

申请号：US18774977

申请日：2024-07-17

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Patrick Haug ,  Tim Hesse ,  Nicolai Speker ,  Philipp Scheible

IPC: B23K26/03 ,  B23K26/244 ,  B23K31/12

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.

公开(公告)号：US12053838B2

公开(公告)日：2024-08-06

申请号：US18357186

申请日：2023-07-24

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Daniel Flamm ,  Michael Jenne ,  Henning Heiming

IPC: B23K26/067 ,  B23K26/0622 ,  B23K26/064

CPC classification number: B23K26/0673 ,  B23K26/0622 ,  B23K26/064

Abstract: An apparatus for laser machining a workpiece includes a beam shaping device for forming a focal zone from an input laser beam incident on the beam shaping device, and a telescope device for imaging the focal zone into a material of the workpiece. The beam shaping device is configured to impose a phase on a beam cross section of the input laser beam in such a way that the focal zone extends along a longitudinal centre axis which is curved at least in certain portions. The telescope device is assigned a beam splitting device for splitting an output laser beam output coupled from the beam shaping device into a plurality of polarized partial beams, each of which has one of at least two different polarization states. The focal zone has an asymmetrical cross section in a plane oriented perpendicular to the longitudinal centre axis.

公开(公告)号：US20240165737A1

公开(公告)日：2024-05-23

申请号：US18422033

申请日：2024-01-25

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Daniel Flamm ,  Myriam Kaiser ,  Jonas Kleiner

IPC: B23K26/067 ,  B23K26/06

CPC classification number: B23K26/067 ,  B23K26/0648

Abstract: A method for laser processing a workpiece is provided. The workpiece includes a material transparent to a laser beam of the laser processing. The method includes splitting an input laser beam by using a beam splitter into a plurality of partial beams. The splitting of the input laser beam is performed by application of phases to a beam cross section of the input laser beam. The method further includes focusing the plurality of partial beams decoupled from the beam splitter by using a focusing optical unit. Multiple focus elements are formed by the focusing of the plurality of partial beams. The method further includes subjecting the material of the workpiece to at least a subset of the multiple focus elements. The application of the phases is performed in such a way that at least two of the multiple focus elements have different intensities.

公开(公告)号：US20240066629A1

公开(公告)日：2024-02-29

申请号：US18331204

申请日：2023-06-08

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Daniel Flamm ,  Jonas Kleiner

IPC: B23K26/06 ,  B23K26/0622

CPC classification number: B23K26/0665 ,  B23K26/0624 ,  B23K26/0648

Abstract: A system includes an ultrashort pulse laser for providing a laser beam, a hollow core fiber, an input coupling optical unit configured to input couple the laser beam into the hollow core fiber, a lens device on which an output coupled laser beam from the hollow core fiber is incident, a beam shaping element on which the laser beam emerging from the lens device is incident, and a focusing optical unit. The lens device is configured to adjust a divergence angle of the output coupled laser beam for adjusting a beam diameter of the laser beam on the beam shaping element. The beam shaping element is configured to impose upon the laser beam a quasi-non-diffractive beam shape with a focal zone that is elongated in the beam propagation direction. The focusing optical unit is configured to set a penetration depth of the focal zone in or on the material.

公开(公告)号：US20240045223A1

公开(公告)日：2024-02-08

申请号：US18489885

申请日：2023-10-19

Applicant: TRUMPF Laser- und Systemtechnik GmbH

Inventor： Malte Kumkar

IPC: G02B27/28 ,  G02B27/14

CPC classification number: G02B27/281 ,  G02B27/144 ,  G02B27/286 ,  G02B27/283

Abstract: A superposition device includes four inputs, each respective input for entry of a respective one of four input beams, an output for exit of an output beam, a first combination device for coherent combination of a first input beam and a second input beam to form a first superposition beam, a second combination device for coherent combination of a third input beam and a fourth input beam to form a second superposition beam, and a third combination device for forming the output beam by coherent combination of the first superposition beam and the second superposition beam. The superposition device is configured to set both a polarization direction and a power of the output beam independently of one another based on relative phase positions of individual phases of the four input beams fed to the four inputs in relation to one another.