| 摘要 |
<p>The arbor (1) comprises: a first rotating body (3) having a first flange (11) on which a cutter (2) is centred; a second rotating body (4) having a second flange (14) facing the first flange (11); control means (5) for controlling rotation of the first body (3); a member (52, 53 and 71) angularly uncoupled and axially coupled to the second body (4), adapted to translate axially betwen a first position in which the second flange (14) clamps the blade (2) against the first flange (11) and a second position in which the second body (4) is spaced from the first body (3), and having a third body (71) carried by the second body (4) and disengageable from the other portions of the member (52, 53 and 71) when this is in the second position; and means (51) for controlling translation of the member (52, 53 and 71). <IMAGE></p> |
