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A cutting tool insert includes: a body defining a rake face, a flank face, and a cutting edge at an intersection of the rake and flank faces; and a cooling microduct within the body. The microduct has a cross-sectional area of not more than 1.0 square millimeter. The microduct is adapted to permit the flow of a coolant therethrough to transfer heat away from the cutting edge and extend the useful life of the insert. The microduct may have a portion with a cross-sectional area no larger than 0.004 square millimeter, and may communicate through at least one of the rake fact and the flank face to exhaust coolant near the cutting edge and further enhance cooling.
US 8,047,748 B2
Michigan Technological University, Houghton, MI (US)
Certificate of Correction
Engineering | Mechanical Engineering
Endres, William J., "Cutting tool insert having internal microduct for coolant" (2011). Michigan Tech Patents. 4.