Milling cutter and milling insert with core and coolant delivery

A milling cutter for use in chipforming and material removal from a workpiece in which coolant is supplied to the milling cutter from a coolant source, the milling cutter comprising:

• a milling cutter body containing a coolant reservoir, the milling cutter body further containing a pocket having a pocket opening in communication with the coolant source, and the milling cutter body containing a fluid passageway that provides fluid communication between the coolant reservoir and the pocket;
• and
• a milling insert body including a peripheral flank surface, a bottom surface, and a central aperture, the milling insert body defining a first part of a rake surface of the cutting insert, wherein a cutting edge is formed at an intersection between the peripheral flank surface and the first part of the rake surface, and wherein the milling insert body includes at least one trough for allowing the coolant to pass therethrough;
• and
• a core including a projection and defining a second part of the rake surface, the core is capable of being attached to the milling insert body by inserting the projection within the central aperture of the milling insert body.