Patent ID: 8074688

Claim:
A machine tool comprising: a tool for chip removal rotating in direction of rotation D; a suction hood covering the tool with a partially opened circumferential wall that has a radial spacing A from the tool, the suction hood has a suction nozzle for suctioning off chips, wherein rotating air vortices directed in an opposite direction based on the direction of rotation D of the tool are generated in the suction hood in an area of the suction nozzle during the chip removal and, to generate the air vortices in a region of the suction nozzle or directly behind the suction nozzle, the circumferential wall of the suction hood has at least one radius of curvature r, which is smaller than the radius R of the tool so a deflection of the air flow is produced counter to the direction of rotation D of the tool in such a way that, at an end point of a peripheral wall of the suction nozzle, a direction vector (V 1 ) of the air vortices at the tool and a direction vector (V 2 ) of the air vortices are directed in opposite directions.