| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a boring method which is able to form a micro hole by a simple method without large instrument investment. SOLUTION: Assuming that t1 is the time until a sensor outputs a detecting signal since it detects a laser beam passing through the pierced hole of a work, t2 is the time until the detecting signal derived from the sensor goes beyond limited value, and t3 is the time until the laser beam practically stops to irradiate since the signal goes beyond the limited value, total time of the times t1, t2, t3 is determined in such a way to be shorter than a time difference (T2-T3) between 1 cycle time T2 of pulse signal which composes a laser output command, and a pulse width T3.</p> |
