利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.013 秒)

    PROCÉDÉ ET INSTALLATION D'USINAGE LASER PULSÉ, EN PARTICULIER POUR LE SOUDAGE, AVEC VARIATION DE LA PUISSANCE DE CHAQUE IMPULSION LASER
    1.
    发明公开
    PROCÉDÉ ET INSTALLATION D'USINAGE LASER PULSÉ, EN PARTICULIER POUR LE SOUDAGE, AVEC VARIATION DE LA PUISSANCE DE CHAQUE IMPULSION LASER 有权
    激光加工方法和设备，尤其是用于焊接，以及每个脉冲功率的变化

    公开(公告)号：EP2576125A1

    公开(公告)日：2013-04-10

    申请号：EP11718401.0

    申请日：2011-05-09

    申请人： Rofin-Lasag AG

    发明人： DÜRR, Ulrich ,  RUETTIMANN, Christoph ,  FREI, Bruno

    IPC分类号： B23K26/20 ,  B23K26/06 ,  H01S3/109

    CPC分类号： B23K26/22 ,  B23K26/0622 ,  B23K2203/08 ,  B23K2203/10 ,  B23K2203/12

    摘要： The laser machining method involves the following steps: A) using a laser source to generate a laser beam at an initial wavelength of between 700 and 1200 nanometers and formed of a succession of laser pulses (10); B) doubling the frequency of part (12) of the laser beam using a non-linear crystal; C) varying the power during each emitted laser pulse (10) so that the power profile over the period of this laser pulse has, in an initial sub-period (T1), a maximum power peak or a pulse part with a maximum power and, in an intermediate sub-period (T2), of duration longer than the initial sub-period, a power lower than said maximum power over all of this intermediate sub-period. The power of the laser is varied in such a way that the maximum power has a value at least twice as high as the mean power over the period of the laser pulse and that the rise time taken to increase to a maximum power from the start of each laser pulse is shorter than 0.3 milliseconds. The machining method relates in particular to the welding of highly reflective metals such as copper, gold, silver or an alloy containing one of these metals. The intention also relates to a laser machining installation for implementing the method described hereinabove.

    摘要翻译： 激光加工过程包括使用具有在700-1200纳米波长初始形成许多的激光脉冲的，由非线性晶体的激光束的一部分的倍频，以及改变的功率的激光源产生的激光束 发射的，使得每一个激光脉冲：在所述激光脉冲的周期电源的轮廓是存在于初始子周期（T1）; 和最大功率或最大功率的脉冲部分的峰值存在于比所述初始子周期更长的持续时间的子中介期间（T2）。 激光加工过程包括使用具有在700-1200纳米波长初始形成许多的激光脉冲的，由非线性晶体的激光束的一部分的倍频，以及改变的功率的激光源产生的激光束 发射的，使得每一个激光脉冲：在所述激光脉冲的周期电源的轮廓是存在于初始子周期（T1）; 最大功率或最大功率的脉冲部分的峰值存在于比所述初始子周期更长的持续时间的子中介周期（T2）; 和功率小于上任何中介的子期间的最大功率。 初始子周期的持续时间小于2毫秒。 最大功率具有200时大于W的所有比的平均功率在激光脉冲的周期的两倍更高的值。 甲单元被布置用于将激光束聚焦，所有这一切都没有完全补偿的色以获得，在焦点处，对于具有双频率做的光的光点具有用于初始波长的光的直径小于光点 ， 该方法进一步包括高反射性金属的焊接的步骤。 具有与所述功率峰值初始光频率或与最大功率的脉冲的一部分一同双频率光强度更大融合的阈值，在初始子周期中，为光的组合和用于焊接的材料 ， 具有双频率光的强度为0.1〜10 MW / cm 2的>在联络点。 在功率或脉冲的具有最大功率的部分的峰的初始波长的光强度较低，在初始子周期中，比融合的针对光的阈值和用于焊接金属。 该激光脉冲具有一终端子周期，其中功率朝向零减小，以优化执行的焊接的冷却。

    PROCEDE DE DECOUPAGE DE PIECES A USINER A L'AIDE D'UN LASER PULSE
    2.
    发明授权
    PROCEDE DE DECOUPAGE DE PIECES A USINER A L'AIDE D'UN LASER PULSE 有权
    方法切割用来制造零件BY脉冲激光器的方式

    公开(公告)号：EP2117764B1

    公开(公告)日：2011-06-01

    申请号：EP08716761.5

    申请日：2008-02-06

    申请人： LASAG AG

    发明人： DÜRR, Ulrich

    IPC分类号： B23K26/38 ,  B23K26/08 ,  B23K26/06

    CPC分类号： B23K26/38 ,  B23K26/0622 ,  B23K26/082

    摘要： The invention relates to a method for cutting parts (4) to be machined, using a pulsed laser (6) that outputs a beam (12) of laser pulses. The method is characterised in that a given cut is carried out using a single laser pulse, essentially for forming an opening (14) in the machined part. To this end, the method comprises a quick relative movement between said part and the laser beam (12) with a pulse duration that is sufficiently long, depending on said relative movement, so that the laser beam can run at least on the predetermined length for a given cut. Each laser pulse preferably has an initial power peak for piercing the machined part when the cutting operation is carried out in an inner region of said part.

    DISPOSITIF LASER POUR PERCER DES TROUS DANS DES COMPOSANTS D'UN DISPOSITIF D INJECTION D UN FLUIDE
    4.
    发明授权
    DISPOSITIF LASER POUR PERCER DES TROUS DANS DES COMPOSANTS D'UN DISPOSITIF D INJECTION D UN FLUIDE 有权
    DISPOSITIF LASER POUR PERCER DES TROUS DANS DES COMPOSANTS D'UN DISPOSITIF D INJECTION D UN FLUIDE

    公开(公告)号：EP1610922B1

    公开(公告)日：2006-10-04

    申请号：EP04718654.9

    申请日：2004-03-09

    申请人： LASAG AG

    发明人： DÜRR, Ulrich ,  FREI, Bruno

    IPC分类号： B23K26/06 ,  B23K26/38 ,  F02M61/16

    CPC分类号： F02M61/168 ,  B23K26/0622 ,  B23K26/0643 ,  B23K26/389

    摘要： The invention relates to a laser machining device which is used to pierce holes in the components of a device for injecting a fluid such as a fuel into a combustion engine. The laser resonator (4) is formed by a solid active medium which is optically pumped using laser diodes. The resonator is arranged such as to supply primary pulses in the range of microseconds. Moreover, modulation means (8) are disposed between the resonator and a machining head (24), which are used to modulate the amplitude of the primary pulses supplied by the resonator, such as to produce a train of shorter secondary pulses for each of said pulses.

    摘要翻译： 激光加工装置技术领域本发明涉及一种激光加工装置，其用于刺穿用于将诸如燃料的流体喷射到内燃机中的装置的部件中的孔。 激光谐振器（4）由使用激光二极管进行光学泵浦的固体活性介质形成。 谐振器被布置为提供微秒范围内的主脉冲。 此外，在谐振器和加工头（24）之间设置调制装置（8），其用于调制由谐振器提供的主脉冲的振幅，以便为每个所述谐振器产生一系列较短的次级脉冲 脉冲。

    DISPOSITIF LASER POUR PERCER DES TROUS DANS DES COMPOSANTS D'UN DISPOSITIF D INJECTION D UN FLUIDE
    5.
    发明公开
    DISPOSITIF LASER POUR PERCER DES TROUS DANS DES COMPOSANTS D'UN DISPOSITIF D INJECTION D UN FLUIDE 有权
    激光器件用于空穴的液体喷射装置的组成部分用于生产

    公开(公告)号：EP1610922A1

    公开(公告)日：2006-01-04

    申请号：EP04718654.9

    申请日：2004-03-09

    申请人： LASAG AG

    发明人： DÜRR, Ulrich ,  FREI, Bruno

    IPC分类号： B23K26/06 ,  B23K26/38 ,  F02M61/16

    CPC分类号： F02M61/168 ,  B23K26/0622 ,  B23K26/0643 ,  B23K26/389

    摘要： The invention relates to a laser machining device which is used to pierce holes in the components of a device for injecting a fluid such as a fuel into a combustion engine. The laser resonator (4) is formed by a solid active medium which is optically pumped using laser diodes. The resonator is arranged such as to supply primary pulses in the range of microseconds. Moreover, modulation means (8) are disposed between the resonator and a machining head (24), which are used to modulate the amplitude of the primary pulses supplied by the resonator, such as to produce a train of shorter secondary pulses for each of said pulses.

    PROCEDE DE DECOUPAGE DE PIECES A USINER A L'AIDE D'UN LASER PULSE
    8.
    发明公开
    PROCEDE DE DECOUPAGE DE PIECES A USINER A L'AIDE D'UN LASER PULSE 有权
    方法切割用来制造零件BY脉冲激光器的方式

    公开(公告)号：EP2117764A1

    公开(公告)日：2009-11-18

    申请号：EP08716761.5

    申请日：2008-02-06

    申请人： LASAG AG

    发明人： DÜRR, Ulrich

    IPC分类号： B23K26/38 ,  B23K26/08 ,  B23K26/06

    CPC分类号： B23K26/38 ,  B23K26/0622 ,  B23K26/082

    摘要： The invention relates to a method for cutting parts (4) to be machined, using a pulsed laser (6) that outputs a beam (12) of laser pulses. The method is characterised in that a given cut is carried out using a single laser pulse, essentially for forming an opening (14) in the machined part. To this end, the method comprises a quick relative movement between said part and the laser beam (12) with a pulse duration that is sufficiently long, depending on said relative movement, so that the laser beam can run at least on the predetermined length for a given cut. Each laser pulse preferably has an initial power peak for piercing the machined part when the cutting operation is carried out in an inner region of said part.