Patent ID: 8328471

Claim:
A metal cutting insert for use in chipforming and material removal from a workpiece, the metal cutting insert comprising: a metal cutting insert body including a cutting edge having at least one discrete cutting location, the metal cutting insert body comprising a base member and a core member, and the base member having a base rake surface and a base flank surface, and each one of the discrete cutting locations comprises a discrete portion of a cutting edge formed at the intersection of the base rake surface and the base flank surface, and the core member containing an aperture for receiving a fastener; the metal cutting insert body further containing a distinct interior coolant passage communicating with the discrete cutting location; the distinct interior coolant passage having a coolant passage inlet defining a coolant passage inlet cross-sectional area, a coolant passage discharge defining a coolant passage discharge cross-sectional area, and an axial coolant passage length; the distinct interior coolant passage defining a coolant flow cross-sectional area along the axial coolant passage length thereof; the coolant passage inlet cross-sectional area being substantially the same as the coolant passage discharge cross-sectional area; and the geometry of the coolant flow cross-sectional area changing along the axial coolant passage length.