| 摘要 |
<p>The workholder comprises an upper die (10) and a lower die (20) for sandwiching a printed wiring board (1) therebetween, to enable drilling, punching or the like to be performed. One of said upper and lower dies (10) has a press portion (12) which has a press surface provided with concave or convex portions (13) for receiving the steps caused by forming a printed wiring circuit (8) on the printed wiring board (1). <IMAGE></p> |
