| 摘要 |
<p>The tool head comprises a plurality of mandrels (23, 33) for corresponding working tools (U), provided with a numerically controlled rotational movement (B). The mandrels are subdivided in at least one first group (21) and one second group (31) of mandrels (23, 33), movable independently from one another around a first and a second numerically controlled axis (B1, B2) of rotation independent from each other. The first group (21) of mandrels comprises at least one mandrel (23) and the second group (31) comprises one single mandrel (33) of greater length with respect to the length of said at least one mandrel (23) of the first group of mandrels.</p> |
