Abstract: A rotary cutting tool having a monolithic carbide cutting member defining a carbide cutting head and a carbide shaft extending outwardly from the cutting head. The shaft includes a conduit in fluid communication with a port for delivering coolant and/or lubricating fluid to an interface between the cutting tool and a work piece. The cutting head defines a peripheral portion and a plurality of carbide cutting edges alternating with flutes in the peripheral portion. The cutting head, the shaft, and the cutting edges are formed integrally with one another. A shank portion defines an elongated bore, and the shaft is received in the bore in a shrink-fit relationship, wherein the shaft of the cutting member is fixed against movement relative to the shank portion.

Abstract: An expandable reamer includes a shank portion, a cutting portion extending from the shank portion, and a tapered pin capable of being at least partially received in the cutting portion. The cutting portion includes a plurality of blades separated by flutes, and a tapered inner surface with threads. The tapered pin includes a tapered outer surface with threads and causes expansion or contraction of the cutting portion when the tapered pin is screwed or unscrewed into the cutting portion. In one embodiment, a coolant channel extends from a coolant cavity through a wall of the cutting portion to provide fluid to the blades during machining of through-holes. In another embodiment, the tapered pin includes a coolant passage in fluid communication with the coolant cavity to provide fluid to the blades during machining of blind holes.

Abstract: An expandable reamer includes a shank portion, a cutting portion extending from the shank portion, and a tapered pin capable of being at least partially received in the cutting portion. The cutting portion includes a plurality of blades separated by flutes, and a tapered inner surface with threads. The tapered pin includes a tapered outer surface with threads and causes expansion or contraction of the cutting portion when the tapered pin is screwed or unscrewed into the cutting portion. In one embodiment, a coolant channel extends from a coolant cavity through a wall of the cutting portion to provide fluid to the blades during machining of through-holes. In another embodiment, the tapered pin includes a coolant passage in fluid communication with the coolant cavity to provide fluid to the blades during machining of blind holes.