| 摘要 |
A machine ( 10 ) for performing a working operation such as cutting on a workpiece. The machine ( 10 ) has a tool ( 19 ) for performing the working operation and a drive motor ( 13 ) operable to drive the tool. The drive motor ( 13 ) has an exhaust ( 17 ) through which an exhaust fluid is discharged during operation. Means ( 51 ) are provided for delivering a dust suppression fluid such as water into the vicinity of the tool ( 19 ) for suppressing dust generated thereby. A shroud ( 31 ) is disposed about the tool ( 19 ) for containing dust and the dust suppression fluid, and an extraction line ( 61 ) communicates with the shroud ( 71 ) for extracting dust and dust suppression fluid contained thereby, as well as air within the shroud. The extraction line ( 61 ) further communicates with the exhaust ( 17 ) of the drive motor ( 13 ) for receiving the exhaust fluid discharging therefrom, the exhaust fluid mixing with the air strength flowing from the shroud.
|
