| 摘要 |
<p>A turret punch press having a pair of upper and lower turrets ono which a plurality of pairs of upper and lower punching tools are mounted to punch a variety of holes in sheet materials is disclosed. Each of the upper and lower turrets is synchronously rotatable such that the upper and lower punching tools may be synchronously rotated or indexed in order to punch holes of the same size and shape, but different orientation, in the sheet material.</p> |
