Dam bar cutting apparatus and dam bar cutting method
    2.
    发明授权
    Dam bar cutting apparatus and dam bar cutting method 失效
    坝坝切割设备和坝条切割方法

    公开(公告)号:US5662822A

    公开(公告)日:1997-09-02

    申请号:US648026

    申请日:1996-05-14

    摘要: The array condition of leads (3) is detected by a photoelectric detector (41), the detection signal is subjected to signal processing to determine the timing to oscillate a pulsed laser beam, and a laser beam axis (13C) is relatively moved at a speed (v.sub.0) with a work table (21) while oscillating a pulsed laser beam (13A), thereby cutting a dam bar (5). At this time, the longitudinal size of a spot (13B) of the pulsed laser beam (13A) is adjusted to be twice or more the width of the dam bar (5) by a longitudinal beam transformer (11a), the transverse size of the spot 13B is adjusted to be not less than 1/2 but not more than 4/5 of the length of the dam bar (5) by a transverse beam transformer (11b), and a beam rotator (11c) is appropriately operated to make the longitudinal direction of the spot (13B) substantially aligned with the longitudinal direction of the lead (3) so that the spot (13B) lies across the width (W.sub.1) of the dam bar (5). As a result, the configuration after cutting the dam bar (5) becomes highly accurate and satisfactory.

    摘要翻译: PCT No.PCT / JP95 / 02064 Sec。 371日期:1996年5月14日 102(e)日期1996年5月14日PCT提交1995年10月9日PCT公布。 公开号WO96 / 12300 PCT 日期:1996年04月25日光电检测器(41)检测引线(3)的阵列条件,检测信号进行信号处理,确定振荡脉冲激光束的时序,激光束轴(13C) 在振荡脉冲激光束(13A)的同时用工作台(21)以速度(v0)相对移动,从而切割堤坝(5)。 此时,通过纵向光束变换器(11a)将脉冲激光束(13A)的光点(13B)的纵向尺寸调整为阻挡条(5)的宽度的两倍或更多,横向尺寸 通过横梁变压器(11b)将点13B调节为不小于+ E,fra 1/2 + EE但不大于+ E,挡块(5)的长度的4/5 + EE。 ,并且适当地操作光束旋转器(11c),使得光斑(13B)的纵向方向基本上与引线(3)的纵向方向对齐,使得光斑(13B)横跨宽度(W1) 坝坝(5)。 结果,切断坝条(5)后的结构变得高精度和令人满意。