| 摘要 |
A cutter has a drive motor and a drive shaft. A rotating cutting tool is connected to the drive shaft. A centrifugal clutch is connected between the drive motor and the drive shaft. A frictional brake having a brake drum and a brake element positioned on the brake drum to achieve a braking effect is provided. The frictional brake is connected to the drive shaft. A servo device, which includes a folding bellows, is connected to the frictional brake for releasing the brake element from the brake drum to cancel the braking effect. A switching device for activating the servo device is provided. |
