Apparatus for inspecting a printed circuit board
    5.
    发明授权
    Apparatus for inspecting a printed circuit board 失效
    用于检查印刷电路板的装置

    公开(公告)号:US06633376B1

    公开(公告)日:2003-10-14

    申请号:US09719610

    申请日:2000-12-12

    IPC分类号: G01N2158

    摘要: As a scanning device for positioning the irradiation position of the laser beam emitted from a laser oscillator at a position of arbitrary coordinates in the commanded mutually orthogonal X-axis direction and Y-axis direction, two galvanomirrors having mutually orthogonal rotary axes and a scan lens are provided, and the light generated from a printed circuit board irradiated with laser beam is detected by a detector, and approval or rejection of inspection result at each position of coordinates is judged on the basis of the output signal of the detector.

    摘要翻译: 作为用于将从激光振荡器发射的激光束的照射位置定位在指令的相互正交的X轴方向和Y轴方向上的任意坐标的位置的扫描装置,具有相互正交的旋转轴的两个电流计镜和扫描透镜 并且由检测器检测从用激光束照射的印刷电路板产生的光,并且基于检测器的输出信号来判断在坐标的每个位置处的检查结果的批准或拒绝。

    Pulse welding apparatus
    6.
    发明授权
    Pulse welding apparatus 失效
    脉冲焊接设备

    公开(公告)号:US5726419A

    公开(公告)日:1998-03-10

    申请号:US571187

    申请日:1995-12-12

    IPC分类号: B23K9/09 G05F1/08

    CPC分类号: B23K9/092 B23K9/093 G05F1/08

    摘要: In pulse welding apparatus of arc welding or short-circuit transfer type arc welding in which a pulse discharge created on the tip of a wire electrode is utilized to perform welding, when a molten droplet produced on the tip of wire electrode is late to separate from the wire due to variations of welding conditions and external disturbances, the wire-supplying speed at which the wire is supplied to the weld zone changes causing undercut. To prevent this, pulse current supplied to the base metal is divided into a plurality of pulse groups and the average current reaches the maximum peak value at a predetermined time after beginning of outputting the pulses, and the group of pulse currents is of a hill-shape in its envelope in accordance with the separation phenomenon of molten droplet, and the group of pulse currents is arranged to have different pulse period, pulse width, and pulse interval. In sort-circuiting arc welding, the short-circuit and arc are instantly controlled in accordance with the detected arc length or wire-supplying speed. This ensures the separation of the molten droplet and its transfer onto the base metal in regular manner. As a result, the growth and separation of molten droplet is not affected by magnetic blow of arc but is controllable.

    摘要翻译: 在电弧焊接或短路转移型电弧焊接的脉冲焊接装置中,其中利用线电极的尖端产生的脉冲放电来进行焊接,当在线电极的尖端上产生的熔融液滴迟到时, 由于焊接条件和外部干扰的变化引起的电线,将焊丝供给到焊接区域的焊丝供给速度变化,导致底切。 为了防止这种情况,提供给贱金属的脉冲电流被分成多个脉冲组,并且在开始输出脉冲之后的预定时间内平均电流达到最大峰值,并且脉冲电流组是小时 - 根据熔滴的分离现象形成其包络线,并且脉冲电流组被布置为具有不同的脉冲周期,脉冲宽度和脉冲间隔。 在分选电弧焊接中,根据检测到的电弧长度或电线供电速度立即控制短路和电弧。 这样可以确保熔融液滴的分离及其以规则的方式转移到贱金属上。 结果,熔滴的生长和分离不受电弧的磁力冲击的影响,但是是可控的。

    Apparatus for and method of controlling the output of a laser source
    8.
    发明授权
    Apparatus for and method of controlling the output of a laser source 失效
    用于控制激光源输出的装置和方法

    公开(公告)号:US5408482A

    公开(公告)日:1995-04-18

    申请号:US8622

    申请日:1993-01-25

    摘要: An apparatus for and a method of controlling a laser oscillator for use as a laser source in a machining operation or the like is disclosed. In particular, the present invention compensates for a deviation of an actual input/output characteristic of a laser oscillator from a normal (expected) input/output characteristic due to, for example, aging and the like. The present invention approximates the actual input/output characteristic and stores the characteristic as a pattern in a storage device. In response to a detection of the actual laser output and an external intensity command signal, the present invention refers to the input/output characteristic pattern thus approximated and generates an input intensity command signal for controlling the laser oscillator to accurately produce the desired laser beam intensity irrespective of the deviation between the actual input/output characteristic and the normal characteristic.

    摘要翻译: 公开了一种在加工操作等中控制用作激光源的激光振荡器的装置和方法。 特别地,本发明由于例如老化等而补偿激光振荡器的实际输入/输出特性与正常(预期)输入/输出特性的偏差。 本发明近似于实际的输入/输出特性,并将特征作为图案存储在存储装置中。 响应于实际激光输出的检测和外部强度指令信号,本发明参考如此近似的输入/输出特性图案,并且产生用于控制激光振荡器以精确地产生所需激光束强度的输入强度指令信号 而与实际输入/输出特性与正常特性之间的偏差无关。