Laser welding processed
    6.
    发明授权
    Laser welding processed 失效
    激光焊接加工

    公开(公告)号:US06900410B2

    公开(公告)日:2005-05-31

    申请号:US10240166

    申请日:2001-09-05

    IPC分类号: B23K26/06 B23K26/24 B23K26/20

    CPC分类号: B23K26/24 B23K26/06

    摘要: In a laser welding method, occurrence of weld defects is effectively prevented, and a high-quality weld joint is provided, and in addition, a wide range of material processes including a laser-using de p-penetration welding technique can be implemented.In keyhole welding using a laser performing output pulse modulation, the welding is conducted in accordance with a frequency conforming to a natural frequency of a metal molten pool.

    摘要翻译: 在激光焊接方法中,有效地防止了焊接缺陷的发生,提供了高质量的焊接接头,另外,可以实现包括激光使用直通焊接技术在内的各种材料加工。 在使用执行输出脉冲调制的激光的键孔焊接中,根据与金属熔池的固有频率一致的频率进行焊接。

    Electronic unit soldering apparatus
    8.
    发明授权
    Electronic unit soldering apparatus 失效
    电子单元焊接设备

    公开(公告)号:US6123247A

    公开(公告)日:2000-09-26

    申请号:US71610

    申请日:1998-05-01

    摘要: An electronic unit soldering apparatus includes: a pallet on which an electronic unit to be reflow-soldered is placed; a transporting unit for transporting the pallet having the electronic unit; and a reflow furnace through which the pallet passes, the reflow furnace having: an air cooling furnace for cooling a first side of a printed-circuit board where a non-heat-resistant part is placed; and an air heating furnace for heating a second side of the printed-circuit board opposite to the first side. The pallet is placed between the cooling furnace and the electronic unit, and the pallet is a mask pallet having a hole in correspondence with a position which the non-heat-resistant part is placed.

    摘要翻译: 电子单元焊接装置包括:放置要回流焊接的电子单元的托盘; 用于运送具有电子单元的托盘的运送单元; 以及回流炉通过的回流炉,所述回流炉具有:用于冷却设置有非耐热部件的印刷电路板的第一面的空气冷却炉; 以及用于加热印刷电路板的与第一侧相对的第二面的空气加热炉。 托盘放置在冷却炉和电子单元之间,并且托盘是具有与放置非耐热部件的位置相对应的孔的掩模托盘。

    Laser welding method
    9.
    发明授权
    Laser welding method 有权
    激光焊接方法

    公开(公告)号:US06483072B2

    公开(公告)日:2002-11-19

    申请号:US09802850

    申请日:2001-03-12

    IPC分类号: B23K2620

    摘要: The present invention is to provide a novel laser welding method, capable of preventing formation of a welding defect, and achieving a deep penetration by a low heat input so as to enable formation of a welding structure with a high strength and a high toughness even in the case of welding by a high power laser. A welding operation is executed with a periodical fluctuation adjustment so as to have a base output of 50% or more with respect to a peak output.

    摘要翻译: 本发明提供一种新颖的激光焊接方法,能够防止焊接缺陷的形成,并且通过低热输入实现深度穿透,从而能够形成具有高强度和高韧性的焊接结构,即使在 通过大功率激光焊接的情况。 以周期性波动调整执行焊接操作,使得相对于峰值输出具有50%以上的基本输出。

    Telephoto zoom lens system for camera
    10.
    发明授权
    Telephoto zoom lens system for camera 失效
    长焦变焦镜头系统

    公开(公告)号:US4729643A

    公开(公告)日:1988-03-08

    申请号:US821445

    申请日:1986-01-22

    CPC分类号: G02B15/173

    摘要: A telephoto zoom lens system comprises a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power. In a zooming operation, the first lens group moves arithmetically, the second lens group moves from the objective side toward the image side in the first half of the movement and then from the image side toward the objective side in the latter half of movement, and the third lens group moves so as to maintain the image side focal point thereof in a fixed position in conjunction with the first and second lens groups.

    摘要翻译: 远摄变焦透镜系统包括具有正折光力的第一透镜组,具有负折光力的第二透镜组和具有正折光力的第三透镜组。 在变焦操作中,第一透镜组以算术方式移动,第二透镜组在运动的前半部分中从物体侧朝向像侧移动,然后在后半部分中从图像侧朝向物体侧移动, 第三透镜组移动,以便与第一和第二透镜组一起将图像侧焦点保持在固定位置。