| 摘要 |
<p>A reflection laser beam diameter adjuster (9) is provided above a lateral frame (3) so that the distance from a machining head (5) to the adjuster (9) is shorter than 8 m. Thus, even when the beam is diverged after it passes the adjuster (9), the deviation of the focal position can be kept within 0.6 mm, whereby high quality machining can be achieved.</p> |
