Patent ID: 8813376

Claim:
A cutting machine comprising: a housing; a motor housed in the housing; a cutting blade provided in the housing, being operated with driving of the motor to cut a workpiece; an air duct formed in the housing, allowing cooling air generated by a cooling fan for the motor to be blown out onto a cutting place of the workpiece; a dust collecting channel formed in the housing, having an opening at one end for serving as a dust collecting port located near the cutting place and an opening at the other end for permitting coupling of a dust collecting nozzle; and a shutter member provided in the housing, being movable between a closed position and an open position of the air duct and located in the open position in a normal state, the shutter member moving to the closed position to close the air duct to prevent the cooling air for the motor from being blown out onto the cutting place of the workpiece from a lower surface of the housing through the air duct in response to coupling of the dust collecting nozzle to the dust collecting channel.