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1. 发明申请

WO2016200621A2 MULTIBEAM LASER SYSTEM AND METHODS FOR WELDING 审中-公开
标题翻译：多管激光系统及焊接方法
公开(公告)号：WO2016200621A2
公开(公告)日：2016-12-15
申请号：PCT/US2016/034354
申请日：2016-05-26
申请人： IPG PHOTONICS CORPORATION
发明人： SCHERBAKOV, Eugene , FOMIN, Valentin , ABRAMOV, Andrey , YAGODKIN, Dimitri , MAMEROW, Holger
IPC分类号： B23K26/21 , B23K26/067 , B23K26/70
CPC分类号： B23K26/067 , B23K26/0604 , B23K26/21 , B23K26/22 , B23K26/24 , B23K26/32 , B23K26/322 , B23K2201/006 , B23K2201/18 , B23K2201/34 , B23K2203/04 , B23K2203/10 , G02B6/26
摘要： The present invention provides a multi-fiber laser output system that delivers at least three fiber outputs arranged in a circumferential pattern or otherwise at least four distinct laser outputs from a single processing cable. The present invention allows for controlling the at least three laser modules and delivering their respective outputs in a pre-determined sequence in a single processing cable, thereby providing multiple processing steps on a work piece that heretofore required separate optics for each beam. The at least three laser outputs are optimized for use in creating spot welds, seam welds or virtual wobble welds when used for seam welding.
摘要翻译：本发明提供了一种多光纤激光输出系统，其传送以圆周图案布置的至少三个光纤输出或者从单个处理电缆输送至少四个不同的激光输出。本发明允许控制至少三个激光模块并且以预定的顺序在单个处理电缆中传送它们各自的输出，由此在工件上提供多个处理步骤，其迄今为每个光束需要单独的光学器件。当用于缝焊时，至少有三个激光输出被优化用于产生点焊，缝焊或虚拟摆动焊缝。

2. 发明申请

WO2015084854A1 HIGH POWER HIGH EFFICIENCY FIBER LASER AND METHOD FOR OPTIMIZING WALL PLUG EFFICIENCY THEREOF 审中-公开
标题翻译：高功率高效光纤激光器及其优化墙壁插拔效率的方法
公开(公告)号：WO2015084854A1
公开(公告)日：2015-06-11
申请号：PCT/US2014/068172
申请日：2014-12-02
申请人： IPG PHOTONICS CORPORATION
发明人： GAPONTSEV, Valentin , FOMIN, Valentin , SCHERBAKOV, Eugene , OVTCHINNIKOV, Alex , FERIN, Anton , ABRAMOV, Andrey
IPC分类号： H01S3/067
CPC分类号： H01S3/0675 , H01S3/094069 , H01S3/0941 , H01S3/1618
摘要： The inventive laser is configured with a plurality of pigtailed multimode (MM) diode lasers each receiving a direct input current at a room temperature which is maintained to be within a 20-25° C inside the housing of the laser. The diode lasers each are configured to operate at a desired wavelength in an optimal operational range, in which the diode laser operates with a WPE range between 63% and 75%. The direct current inputted in each diode laser is selected to be below a threshold at an efficiency curve of the diode laser after which the efficiency of the diode laser starts decreasing while an output power of the diode laser continues to increase. The laser is further configured with a fiber gain block having an active fiber medium which is pumped with the cumulative pump output and operative to emit a laser output in a power range between hundreds of watts and tens and even hundreds of kilowatts at the desired wavelength in an optimal operation range. The optimal operational ranges of respective MM diode lasers and fiber gain block are matched to achieve a superposition of respective efficiency maximums providing an overall maximum system efficiency up to 55%.
摘要翻译：本发明的激光器配置有多个尾纤多模（MM）二极管激光器，其每个都接收室温下的直接输入电流，该激光器保持在激光器壳体内的20-25℃内。二极管激光器被配置为在最佳工作范围内以期望的波长工作，其中二极管激光器以63％至75％之间的WPE范围工作。在二极管激光器的效率曲线下，输入到每个二极管激光器中的直流电流选择为低于阈值，之后二极管激光器的效率开始下降，同时二极管激光器的输出功率继续增加。激光器进一步配置有具有有源光纤介质的光纤增益块，该有源光纤介质利用累积泵浦输出被泵浦，并且可操作以在所需波长的数百瓦特和几十千瓦之间的功率范围内发射激光输出最佳操作范围。匹配相应MM二极管激光器和光纤增益块的最佳工作范围，以实现各自效率最大值的叠加，从而提供高达55％的总体最大系统效率。

3. 发明申请

WO2014063153A1 ROBOTIC LASER SEAM STEPPER 审中-公开
标题翻译：机动激光海绵踏步机
公开(公告)号：WO2014063153A1
公开(公告)日：2014-04-24
申请号：PCT/US2013/065930
申请日：2013-10-21
申请人： IPG PHOTONICS CORPORATION
发明人： FOMIN, Valentin , STAROVOYTOV, Anton , ABRAMOV, Andrey , GAPONTSEV, Valentin , FUCHS, Artjom , SCHRAMM, Ingo , SCHERBAKOV, Eugene , MAMEROW, Holger
IPC分类号： B23K26/08 , B23K26/24 , B23K26/00 , B23K26/02
CPC分类号： B23K26/0884 , B23K26/032 , B23K26/0626 , B23K26/142 , B23K26/1462 , B23K26/22
摘要： A robotically operated laser seam stepper is configured with an elongated support column extending along a longitudinal axis and made from lightweight material. A support plate is displaceably mounted to the column while supporting thereon an optical head which is provided with optics. The optics is configured to direct a laser beam along a path towards a welding zone through a protective window of the optical head. The laser seam stepper further is structured with a first arm mounted to the support plate and extending along a longitudinal axis of the stepper diametrically opposite to the optical head. The inner surface of the displaceable arm defines a tunnel which is aligned with the optical head and axially traversed by the laser beam, a first axially flowing stream of pressurized gaseous medium, and by a second axially flowing stream of gaseous medium. The second stream, entering the tunnel at a pressure lower than that one of the first stream in response to a pressure gradient generated in the column, does not generate vortexes within the column. The first and second streams exit through the downstream end of the tunnel next to the welding zone. As the streams flow out, they carry out welding debris from the tunnel.
摘要翻译：机器人操作的激光缝步进器配置有沿着纵向轴线延伸并由轻质材料制成的细长支撑柱。支撑板可移动地安装到柱上，同时在其上支撑设置有光学元件的光学头。光学器件被配置为沿着通过光学头的保护窗口的焊接区域的路径引导激光束。激光焊缝步进器进一步构造成具有安装到支撑板并沿着与光学头径向相反的步进器的纵向轴线延伸的第一臂。可移动臂的内表面限定了与光学头对准并且被激光束轴向移动的通道，第一轴向流动的加压气体介质流和第二轴向流动的气体介质流。响应于在塔中产生的压力梯度，以比第一流低的压力进入隧道的第二流不会在塔内产生涡流。第一和第二物流通过隧道的下游端离开焊接区旁边。当溪流流出时，它们从隧道中进行焊接碎屑。

4. 发明申请

WO2020117816A1 ULTRAHIGH FIBER LASER SYSTEM WITH CONTROLLABLE OUTPUT BEAM INTENSITY PROFILE 审中-公开
公开(公告)号：WO2020117816A1
公开(公告)日：2020-06-11
申请号：PCT/US2019/064251
申请日：2019-12-03
申请人： IPG PHOTONICS CORPORATION
发明人： SCHERBAKOV, Eugene , FOMIN, Valentin , ABRAMOV, Andrey , ABRAMOV, Mikhail , YAGODKIN, Dmitri
IPC分类号： H01S3/067 , H01S3/101 , H01S5/40
摘要： The disclosed ultra-high power all fiber laser system is configured with multiple spaced apart fiber lasers outputting respective laser beams respective paths. The disclosed system is further configured with a tapered fiber-bundle including at least, one central guiding fiber and a plurality of peripheral guiding fibers. The disclosed system further has a multiclad delivery fiber configured with a double-bottle neck cross-section and provided with at least two concentric and radially spaced apart inner and outer cores. The inner core is coupled to the peripheral guiding fibers while the inner core is spliced to the central guiding fiber so that a system output emitted from the inner core of the delivery fiber has a different beam shape from the system output emitted from the outer core.

5. 发明申请

WO2020006368A1 ACTIVE WAVEGUIDE FOR HIGH-POWER LASER 审中-公开
公开(公告)号：WO2020006368A1
公开(公告)日：2020-01-02
申请号：PCT/US2019/039748
申请日：2019-06-28
申请人： IPG PHOTONICS CORPORATION
发明人： SCHERBAKOV, Eugene , FOMIN, Valentin , ABRAMOV, Andrey , DORONKIN, Aleksey
IPC分类号： H01S3/067
摘要： An active waveguide including active and passive rods which have respective polymeric claddings mechanically and optically coupled to one another so as to define a side pumping scheme. One or a plurality of elements are embedded in one of or both active and passive rods and have a refractive index lower than the lowest of refractive indices of the respective active and passive rods at at least 1*10 -3 . The MM core of the active rod includes inner and outer concentric regions with a concentration of light emitters in the outer region being lower than that of the inner region at more than 50 % and, a radius of the inner region being at most 92 % of that of the outer region. The unabsorbed pump light at the output of the active waveguide constitutes less than 1 % of the delivered pump light which in combination with the refractive index of the embedded elements and selectively doped core regions contribute to laser efficiency of at least 86 %.

6. 发明申请

WO2014063151A1 HAND MANEUVERABLE LASER WELDING GUN 审中-公开
标题翻译：手动可激光激光焊枪
公开(公告)号：WO2014063151A1
公开(公告)日：2014-04-24
申请号：PCT/US2013/065924
申请日：2013-10-21
申请人： IPG PHOTONICS CORPORATION , VOLKSWAGEN AKTIENGESELLSCHAFT
发明人： FOMIN, Valentin , STAROVOYTOV, Anton , ABRAMOV, Andrey , GAPONTSEV, Valentin , FUCHS, Artjom , SCHRAMM, Ingo , SCHERBAKOV, Eugene , MAMEROW, Holger , MICHALZIK, Andreas
IPC分类号： B23K26/24
CPC分类号： B23K26/0096 , B23K26/032 , B23K26/082 , B23K26/142 , B23K26/22 , B23K26/24 , B23K26/705
摘要： A hand displaceable laser welding gun is configured with an elongated support column extending along a longitudinal axis and made from lightweight material. A support plate is displaceably mounted to the column while supporting thereon an optical head which is provided with beam-guiding optics. The optics is configured to direct a laser beam along a path towards a welding zone through a protective window of the optical head. The laser welding gun further is structured with a first arm mounted to the support plate and extending along a longitudinal axis of the gun diametrically opposite to the optical head. The inner surface of the displaceable arm has an inner surface defining a tunnel which is aligned with the optical head and axially traversed by the laser beam, a first axially flowing stream of pressurized gaseous medium, and a second axially flowing stream of gaseous medium. The second stream, entering the tunnel at a pressure lower than that one of the first stream in response to a pressure gradient generated in the column, does not generate vortexes within the column. The first and second streams exit through the downstream end of the tunnel next to the welding zone. As the streams flow out, they carry out welding debris flowing within the tunnel before the debris reach the protective window of the optical head.
摘要翻译：手可移动激光焊枪配置有沿着纵向轴线延伸并由轻质材料制成的细长支撑柱。支撑板可移动地安装到柱上，同时在其上支撑设置有光束引导光学器件的光学头。光学器件被配置为沿着通过光学头的保护窗口的焊接区域的路径引导激光束。激光焊枪还具有安装到支撑板并沿着与光学头直径相对的枪的纵向轴线延伸的第一臂。可移动臂的内表面具有限定隧道的内表面，其与光学头对准并且被激光束轴向穿过，第一轴向流动的加压气体介质流和第二轴向流动的气体介质流。响应于塔中产生的压力梯度，第二流以比第一流低的压力进入隧道，不会在塔内产生涡流。第一和第二物流通过邻近焊接区的隧道的下游端部流出。当流流出时，它们在碎屑到达光学头的保护窗口之前，在隧道内进行焊接碎屑流动。

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