Patent ID: 7963729

Claim:
A cutting insert for use in chipforming and material removal from a workpiece wherein coolant is supplied through an unobstructed fluid passageway to the cutting insert from a coolant source, the cutting insert being received in a pocket with a seating surface, the cutting insert comprising: a cutting insert body defining a peripheral flank surface, a bottom surface and a part of a rake surface of the cutting insert, and a plate attached to the cutting insert body and defining at least another part of the rake surface; at least two distinct cutting locations; at least two discrete internal channels wherein each one of the internal channels corresponds to one of the cutting locations, and each one of the internal channels having an inlet and an outlet wherein the inlet is radial inward of the outlet; a selected one of the cutting locations being in engagement with the workpiece and the other cutting locations being unengaged with the workpiece; the inlet of the internal channel corresponding to the selected cutting location being in communication with the coolant source through the unobstructed fluid passageway; and the internal channel corresponding to each unengaged cutting location abutting the seating surface whereby the internal channel corresponding to each unengaged cutting location being in substantial isolation from the coolant source and the unobstructed fluid passageway.