Patent
Laser welding head with dual movable mirrors providing beam movement and laser welding systems and methods using same
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TLDR
In this article, a laser welding head with movable mirrors is used to perform welding operations, for example, with wobble patterns and seam finding/tracking and following, where the movable mirror provides a wobbling movement of one or more beams within a relatively small field of view, defined by a scan angle of 1-2°.Abstract:
A laser welding head with movable mirrors may be used to perform welding operations, for example, with wobble patterns and/or seam finding/tracking and following. The movable mirrors provide a wobbling movement of one or more beams within a relatively small field of view, for example, defined by a scan angle of 1-2°. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The laser welding head may also include a diffractive optical element to shape the beam or beams being moved. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the welding head such as a thermal condition proximate one of the mirrors.read more
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Welding device and welding method
Wang Wenzheng,He Hongming,Tang Zhenqiu,Wen Song,Tang Jinglong,Chen Genyu,Chen Yan,Gao Yunfeng +7 more
Abstract: The invention relates to a welding device, including a laser, a laser shaping assembly, a light beam motion control assembly, and a blowing assembly The laser is used to emit laser beams The laser shaping assembly is used to shape the laser beams into light spots The light beam motion control assembly comprises an X-axis swinging lens, an X-axis swinging motor, a Y-axis swinging lens, a Y-axisswinging motor, and a control unit The X-axis swinging motor is connected with the X-axis swinging lens The Y-axis swinging motor is connected with the Y-axis swinging lens The control unit respectively controls the X-axis swinging lens and the Y-axis swinging lens to move through the X-axis swinging motor and the Y-axis swinging motor, to change positions of the light spots illuminated on a workpiece, the light spots being reflected by the X-axis swinging lens and the Y-axis swinging lens, to weld the workpiece The blowing assembly is used to blow shielding gas to the welding positions when welding the workpiece The welding device can satisfy welding requirements of small size circular trace of a liquid injection hole
Patent
Method for splash-free welding, in particular using a solid-state laser
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Patent
Systems and Methods for Monitoring and/or Controlling Wobble-Processing Using Inline Coherent Imaging (ICI)
TL;DR: In this article, a system and method may be used to monitor and/or control material processing where a process beam is moved in a wobble pattern, such as a welding process.
Patent
Method for butt-joint welding two workpieces by means of an ultrashort pulse laser beam, and associated optical element
Kumkar Malte,Zimmermann Felix +1 more
TL;DR: In this paper, a method for butt-joint welding two, in particular planar workpieces, by means of at least one pulsed laser beam (3), in particular ultrashort pulse laser beam, which is focussed into the workpiece material, is described.
References
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Patent
Fiber laser device for medical/cosmetic procedures
TL;DR: In this article, a method and apparatus for radiation treatment on a patient by use fiber laser and/or a tunable laser is provided for the treatment of a patient with radiation.
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