| 摘要 |
A hub (3) on which a cutting tool (4) is adhered, is provided in its bore (8) with an annular recess (10) and with two annular chambers (11) each containing a sealing joint (12). The annular recess (10) is connected to a connection (14) for a pressure fluid intake and the two annular chambers (11) are connected to a connection (16) for the exhaust of the pressure fluid. The pressure fluid, particularly pressurized oil, allows the widening of the hub (3) in order to mount or adjust the cutting tool, the chambers (11) intended to collect the pressure fluid for transferring directly said pressure fluid into a container or in the pressure generator. Thus, the clogging with fluid of neighbouring machine members is avoided. |
