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1. 发明专利

JP2007114435A Scanning optical unit, method of controlling the same, and laser machining apparatus 有权
标题翻译：扫描光学单元，其控制方法和激光加工设备
公开(公告)号：JP2007114435A
公开(公告)日：2007-05-10
申请号：JP2005305034
申请日：2005-10-19
申请人： Laserfront Technologies Inc , レーザーフロントテクノロジーズ株式会社
发明人： NAGANO TSUYOSHI , ARIGA SATORU
IPC分类号： G02B26/10
摘要： PROBLEM TO BE SOLVED: To provide a scanning optical unit having a long operating distance, in which collimated light is mechanically and two-dimensionally deflected by a reflecting deflection, and to provide a method of controlling by which the mechanically instable operation of the scanning optical unit is prevented.
SOLUTION: The scanning optical unit is provided with a first deflecting mirror which deflects the angle of a laser beam by reflection in a first face and a second deflecting mirror which deflects the angle of the laser beam deflected with the first deflecting mirror by reflection in a second face which intersects with the first face, and the two deflecting mirrors are rotationally driven with respectively different servomotors. The two mirror faces mechanically and two-dimensionally deflect collimated light beam by reflecting deflection, thus the scanning optical unit having a long operating distance is obtained. A servomotor controlling part turns the rotating shaft of the servomotors in both ways by an angle, 360° for instance, necessary for maintenance during the time when plotting is ceased, and so controls as to spread lubricant existing between the rotating shaft and a bearing part supporting the rotating shaft over the whole periphery of the rotating shaft.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有长的操作距离的扫描光学单元，其中准直光由反射偏转机械地和二维地偏转，并且提供一种控制方法，通过该方法，机械不稳定的操作防止扫描光学单元。解决方案：扫描光学单元设置有第一偏转镜，第一偏转镜通过第一面中的反射偏转激光束的角度，并且第二偏转镜将偏转第一偏转镜偏转的激光束的角度偏转在与第一面相交的第二面中的反射，并且两个偏转镜被分别用不同的伺服电机旋转驱动。这两个镜面通过反射偏转机械地和二维偏转准直光束，从而获得具有较长工作距离的扫描光学单元。伺服电动机控制部件将伺服电动机的旋转轴以两个方式旋转一定角度，例如在绘图停止时维护所需的360°，并且因此控制将存在于旋转轴和轴承部件之间的润滑剂在旋转轴的整个周边上支撑旋转轴。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2006150373A Laser beam machining apparatus and laser beam machining method 审中-公开
标题翻译：激光加工设备和激光束加工方法
公开(公告)号：JP2006150373A
公开(公告)日：2006-06-15
申请号：JP2004341298
申请日：2004-11-25
申请人： Laserfront Technologies Inc , レーザーフロントテクノロジーズ株式会社
发明人： ARIGA SATORU
IPC分类号： B23K26/00 , H01S3/00
摘要： PROBLEM TO BE SOLVED: To provide a laser beam machining apparatus and a laser beam machining method capable of realizing the consistent machining and suppressing occurrence of defects. SOLUTION: Laser beams 10 emitted from a laser beam oscillator 1 are transmitted to an emission optical unit 6 via optical fibers 2. After the incident laser beams 10 are condensed by a condensing lens 3 in the emission optical unit 6, the laser beams are reflected by a mirror 5, and further condensed by a condensing lens 4, and a work 9 is machined by irradiating laser beams on a machining part of the work 9. The reflected laser beams 11 reflected from the surface of the work 9 are condensed by the condensing lens 4, transmitted through the mirror 5 and detected by a sensor 7. In a laser beam output control unit 8, the quantity of the reflected laser beams during the pre-registered normal machining is compared with the quantity of the reflected laser beams 11 detected by the sensor 7 to adjust the output of the laser beams 10 emitted from the laser beam oscillator 1. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供能够实现一致的加工并抑制缺陷的发生的激光束加工装置和激光束加工方法。解决方案：从激光束振荡器1发射的激光束10通过光纤2传输到发射光学单元6.在入射激光束10被发射光学单元6中的聚光透镜3聚光之后，激光光束被反射镜5反射，并被聚光透镜4进一步冷凝，并且通过在工件9的加工部分上照射激光来加工工件9.从工件9的表面反射的反射激光束11 由聚光透镜4聚光，通过反射镜5透射并由传感器7检测。在激光束输出控制单元8中，将预先登记的正常加工期间的反射激光束的量与反射的数量进行比较激光束11由传感器7检测，以调节从激光束振荡器1发射的激光束10的输出。版权所有：（C）2006，JPO＆NCIPI

3. 发明专利

JP2004356166A Method of stabilizing pulse output of laser and solid-state laser system using the same 审中-公开
公开(公告)号：JP2004356166A
公开(公告)日：2004-12-16
申请号：JP2003148879
申请日：2003-05-27
申请人： Laserfront Technologies Inc , レーザーフロントテクノロジーズ株式会社
发明人： ARIGA SATORU
IPC分类号： H01S3/131 , H01S3/092 , H01S3/16
摘要： PROBLEM TO BE SOLVED: To solve the problem that, when a solid-state laser system is used in a state where a laser rod section causes an excessive thermal change due to a change in the laser light outputting pulse interval, or the like, the leaking amount or power distribution of laser light changes and the relation between the output of the laser and the monitored value of the output are deviated, resulting in the fluctuation of the output, because the polarized state or spread angle of the laser light changes due to a thermal lens effect caused by the thermal change of the laser rod section.
SOLUTION: In a method of stabilizing the output of an optically pumped solid-state laser system which outputs pulsed laser light, the temperature of a laser rod 1 is detected and the crest value of an optically pumped pulse is controlled so that the crest value of the pulsed laser light outputted from the laser system may become a required constant value.
COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2007229725A Laser beam machining method 有权
标题翻译：激光束加工方法
公开(公告)号：JP2007229725A
公开(公告)日：2007-09-13
申请号：JP2006051262
申请日：2006-02-27
申请人： Laserfront Technologies Inc , レーザーフロントテクノロジーズ株式会社
发明人： ARIGA SATORU , NAKAMURA TSUYOSHI
IPC分类号： B23K26/26 , B23K26/04
摘要： PROBLEM TO BE SOLVED: To provide a laser beam machining method that has a fast machining speed and prevents welding defects, when performing seam welding by repeating pulselike laser irradiation while scanning a laser beam at high speed. SOLUTION: A linear welding shape is formed by laser irradiation of a first pulse. After the laser irradiation of the first pulse and before the laser irradiation of the second pulse, a laser beam driving part is returned by a fixed distance in the original direction. Then, the laser beam is scanned forward again while performing the laser irradiation of the second pulse, and seam welding is conducted while overlapping the end of each weld zone. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有快速加工速度并防止焊接缺陷的激光束加工方法，当在高速扫描激光束的同时重复脉动式激光照射进行缝焊时。解决方案：通过激光照射第一脉冲形成线性焊接形状。在第一脉冲的激光照射和第二脉冲的激光照射之前，激光束驱动部在原始方向上返回固定距离。然后，在进行第二脉冲的激光照射的同时再次向前扫描激光束，并且在与每个焊接区域的端部重叠的同时进行缝焊。版权所有（C）2007，JPO＆INPIT

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