公开(公告)号：US6433304B2

公开(公告)日：2002-08-13

申请号：US74209400

申请日：2000-12-22

申请人： HONDA MOTOR CO LTD

发明人： OKUMURA TOKUJI ,  WAKABAYASHI KAZUSHIRO ,  ISOGAI KAZUO ,  TAKEKUMA HIDESHI ,  OTAKE TSUNEO

IPC分类号： B23K26/03 ,  B23K26/38 ,  B60R21/20 ,  B60R21/217 ,  B23K26/00

CPC分类号： B60R21/2171 ,  B23K26/03 ,  B23K26/0861 ,  B23K26/382 ,  G05B2219/37583 ,  G05B2219/45139

摘要： Assuming that t1 represents a period of time until a detection signal is outputted after a sensor senses a laser beam passed through a through-hole of a workpiece, t2 represents a period of time until the detection signal derived from the sensor exceeds a preset threshold value, and t3 represents a period of time until radiation of the laser beam is actually stopped after the threshold value is exceeded, a total period of time (t1+t2+t3) of the periods of time t1 to t3 is set to be shorter than a time difference (T2-T3) between a pulse width (T3) and one cycle (T2) of a pulse signal for constructing a laser output command signal.

摘要翻译： 假设t1表示在传感器感测通过工件的通孔的激光束之后输出检测信号的时间段，t2表示直到来自传感器的检测信号超过预设阈值的时间段 ，t3表示超过阈值后直到激光束的放射线实际停止的时间段，时间段t1〜t3的总时间（t1 + t2 + t3）设定为短于 用于构成激光输出指令信号的脉冲信号的脉冲宽度（T3）和一个周期（T2）之间的时间差（T2-T3）。