Cutting Tool Assemblies, Face Mills, and Related Methods

A face mill, comprising:

• a cylindrical body comprising a central bore, a plurality of face mill coolant passages fluidly coupled to the central bore, and a cutting face, the cutting face, comprising:
• a plurality of radially spaced teeth;
• and
• gaps between the teeth, wherein each face mill coolant passage comprises an opening at a corresponding gap.

A method, comprising:

• rotating a cutting tool assembly comprising a tool holder and a face mill;
• flowing coolant into a central coolant passage of an elongate body of the tool holder, the tool holder comprising the elongate body comprising a flange and a sleeve extending from the flange, the elongate body comprising the central coolant passage, a plurality of sleeve coolant passages, and a distal end, the sleeve coolant passages are fluidly coupled to the central coolant passage and each have sleeve openings at the distal end;
• flowing the coolant from the sleeve coolant passages into mill coolant passages of the face mill, the face mill comprising a central bore, the face mill coolant passages fluidly coupled to the central bore, and a cutting face comprising a plurality of radially spaced teeth and gaps between the teeth, wherein each face mill coolant passage comprises an opening at a corresponding gap;
• and
• spraying the coolant out of nozzles at each opening of the face mill coolant passages.

An apparatus, comprising:

• a computer numerical control machine comprising a chuck;
• and
• a cutting tool assembly to be carried by the chuck, wherein the cutting tool assembly, comprises:
• a tool holder comprising an elongate body comprising a flange and a sleeve extending from the flange, the elongate body comprises a central coolant passage and a plurality of sleeve coolant passages, the sleeve comprising a distal end, the sleeve coolant passages are fluidly coupled to the central coolant passage and each have a sleeve opening at the distal end of the sleeve;
• and
• a face mill comprising a cylindrical body comprising a central bore, a plurality of face mill coolant passages fluidly coupled to the central bore, and a cutting face comprising a plurality of radially spaced teeth and gaps between the teeth, wherein each face mill coolant passage comprises an opening at a corresponding gap,
• wherein coolant is to flow through the central coolant passage and the face mill coolant passages and spray out of the openings at the corresponding gaps.