| 摘要 |
<p>The device comprises a circular ring (4) provided with circular housings (10) equally distributed on a constant radius. The said circular ring (4) is fitted with an interior toothed ring (6) also provided with circular housings (12). Tools, in the form of cutting blades (2), are fixed against the circular ring (4) by means of studs (22) engaging in the circular housings (10) if they are fixed tools or by means of studs (23) engaging in the circular housings (12) if they are mobile tools. The fixed or mobile tool version is obtained by turning the said tool over on itself. The clamping of tools against the circular ring is obtained by means of a circular ring (5) whose pressure is provided by a rod (15) acting on a spring (18), the said rod traversing the circular ring (4). The opening of the devices (A, B and C) is caused by the action either of a device (A, B or C) on the head of one of the rods (15) or by the action of a pressure ring (27). …<IMAGE>… </p> |
