公开(公告)号：US20240165739A1

公开(公告)日：2024-05-23

申请号：US18423350

申请日：2024-01-26

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Benedikt Wessinger ,  Marco Opitz ,  Bjoern Sautter ,  Nicolai Speker ,  Tim Hesse

IPC分类号： B23K26/144 ,  B22F12/41 ,  B22F12/90 ,  B23K26/035 ,  B23K26/342 ,  B33Y50/02

CPC分类号： B23K26/144 ,  B22F12/41 ,  B22F12/90 ,  B23K26/035 ,  B23K26/342 ,  B33Y50/02

摘要： 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.

公开(公告)号：US20220193782A1

公开(公告)日：2022-06-23

申请号：US17688925

申请日：2022-03-08

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Bjoern Sautter ,  Marco Opitz ,  Benedikt Wessinger ,  Timo Steeb ,  Franziska Spitz

IPC分类号： B22F12/55 ,  B33Y10/00 ,  B33Y30/00 ,  B22F10/28 ,  B22F12/53 ,  B23K26/144 ,  B23K26/342 ,  B23K26/14

摘要： A material deposition unit includes a radiation unit configured to emit electromagnetic radiation in a directed manner onto a workpiece along a beam axis extending in a beam direction and, and a powder discharge device having multiple powder discharge units configured to discharge powder in a directed form onto the workpiece. The powder discharge device includes at least a first powder discharge unit and a second powder discharge unit. The first powder discharge unit has a plurality of first powder-outlet openings with a first material focal zone. The second powder discharge unit has a plurality of second powder-outlet openings with a second material focal zone. The first material focal zone and the second material focal zone being spaced apart from one another in the beam direction.

公开(公告)号：US20240082955A1

公开(公告)日：2024-03-14

申请号：US18518675

申请日：2023-11-24

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Bjoern Sautter ,  Benedikt Wessinger ,  Marco Opitz ,  Andreas Scholz ,  Nicolai Speker ,  Tim Hesse

IPC分类号： B23K26/342 ,  B23K26/70 ,  B23K31/12

CPC分类号： B23K26/342 ,  B23K26/702 ,  B23K31/12 ,  B33Y10/00

摘要： 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.

公开(公告)号：US20210260690A1

公开(公告)日：2021-08-26

申请号：US17317925

申请日：2021-05-12

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Patrick Haug ,  Nicolai Speker ,  Marco Opitz ,  Tim Hesse

IPC分类号： B23K26/035 ,  B23K26/244 ,  B23K26/32 ,  B23K26/06

摘要： 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.

公开(公告)号：US11786989B2

公开(公告)日：2023-10-17

申请号：US17317925

申请日：2021-05-12

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Patrick Haug ,  Nicolai Speker ,  Marco Opitz ,  Tim Hesse

IPC分类号： B23K26/035 ,  B23K26/244 ,  B23K26/06 ,  B23K26/32

CPC分类号： B23K26/035 ,  B23K26/0613 ,  B23K26/244 ,  B23K26/32

摘要： 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.

公开(公告)号：US20230146425A1

公开(公告)日：2023-05-11

申请号：US17879830

申请日：2022-08-03

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Robert Ganter ,  Tim Hesse ,  Kevin Kruse ,  Gerhard Link ,  Steven Mueller ,  Marco Opitz ,  Bjoern Sautter ,  Fabian Goetzelmann ,  Nicolai Speker ,  Franziska Horer ,  Anh-Thu Tran ,  Benedikt Wessinger

IPC分类号： B22F12/50 ,  B23K26/342 ,  B23K26/14 ,  B22F12/40 ,  B33Y30/00

CPC分类号： B22F12/50 ,  B22F12/40 ,  B23K26/342 ,  B23K26/1464 ,  B33Y30/00

摘要： A material deposition unit includes a radiation unit designed to emit electromagnetic radiation in a directed manner onto a workpiece along a beam axis, and a powder discharge device that has multiple powder discharge units configured to discharge powder in a directed form onto the workpiece through powder-outlet openings. The material deposition unit further includes a powder division unit having multiple powder channels. A number of powder channels corresponds to a number of powder discharge units. The powder division unit is designed to distribute a central powder stream guided to a feed channel uniformly over the powder channels. Each respective powder channel is connected to a respective powder discharge unit by an exchangeable connecting element. At least one powder discharge unit has an exchangeable powder discharge element, which is elongate, has a first end and a second end, and is arranged at least partially within the corresponding powder discharge unit.