Cutting tool insert having internal microduct for coolant

Details Cutting tool insert having internal microduct for coolant Cutting tool insert having internal microduct for coolant

2010-09-17

2011-11-01

Fridie, Jr., Will (Department: 3724)

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

C407S115000

Reexamination Certificate

active

08047748

ABSTRACT:
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.

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