Cutting insert with internal coolant delivery and cutting assembly using the same

A metal cutting assembly for use in chipforming and material removal from a workpiece wherein a coolant source supplies coolant to the cutting assembly, the metal cutting assembly comprising:

• a holder comprising a pocket, and the pocket including a flat surface containing a coolant port in communication with the coolant source wherein the coolant port has a coolant port cross-sectional area;
• the pocket receiving a cutting insert;
• the metalcutting insert comprising:
• a 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 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.