Abstract: A coolant bonnet for a cutting tool includes a head portion, a shank portion, an internal coolant passage extending through the shank portion and into a coolant manifold disposed within the head portion, and one or more coolant ducts extending radially outward from the manifold to an outlet port. Each coolant duct is aligned with the chip flutes of the cutting tool and directs coolant at a predetermined exit angle in an axially rearward direction toward the cutting edges of a cutting insert mounted on the cutting tool. A method of providing coolant to a cutting edge of a cutting insert mounted on the cutting tool is also disclosed.

Abstract: A reamer head for a reamer includes one or more blades separated by flutes. Each flute has a front core region proximate a front end of the cutting portion, a rear portion proximate a rear end of the cutting portion and the middle core region therebetween. The front core region has a thickness, T1, the middle core region has a thickness, T2, and the rear core region has a thickness, T3. The thickness, T2, of the middle core region is greater than the thickness, T1, of the front core region and the thickness, T3, of the rear core region. A method of making the reamer head is also disclosed.

Abstract: A coolant bonnet for a cutting tool includes a head portion, a shank portion, an internal coolant passage extending through the shank portion and into a coolant manifold disposed within the head portion, and one or more coolant ducts extending radially outward from the manifold to an outlet port. Each coolant duct is aligned with the chip flutes of the cutting tool and directs coolant at a predetermined exit angle in an axially rearward direction toward the cutting edges of a cutting insert mounted on the cutting tool. A method of providing coolant to a cutting edge of a cutting insert mounted on the cutting tool is also disclosed.