Patent ID: 7186173

Claim:
A tool for milling operations on a work piece having surfaces, the tool capable of being driven in rotation about a main axis and comprising a core having (i) a plurality of abrasive elements extending from the core radially to the axis and spaced apart from each other angularly; (ii) at least one respective gap in the form of a cut between at least one pair of abrasive elements adjacent to each other, the gap extending radially in the core to a predefined distance from the axis; (iii) an outer casing with the at least one gap in the form of a cut open at the outer casing of the core along a substantial length of the at least one pair of abrasive elements; (iv) a hole coaxial with the axis and extending to a predefined distance from the axial end of the core occupied by the abrasive elements, and in which the at least one gap in the form of a cut is in fluid communication with the hole in the core: and (v) a section, radially extending directly in the core between the hole and the at least one gap in the form of a cut, through which cooling fluid passes to convey the cooling fluid fed through the hole over the abrasive elements at the surfaces of the work piece.