Abstract: A rotary cutting tool having a cylindrical body with a plurality of flutes and a cutting tool insert mounted at the end of each flute adjacent the body cutting portion end face. The cutting inserts are mounted so that insert first cutting edges are spaced slightly axially outward of the tool body and extend at least generally radially thereof. A coolant flow passage extends coaxially through the body and includes radial branches communicating with the inserts. Preferably, the coolant flow passage is open at the body cutting portion end face and the branches comprise grooved areas in the end face. Each insert includes a coolant flow channel therein extending adjacent to and coextensive with the first cutting edge. An entrance area for these channels communicates with an associated one of the branches. In the preferred arrangement, each insert includes first and second cutting edges with the second cutting edges being slightly spaced radially outward of the cutting tool body.

Abstract: An insert type end milling cutter and cutting insert for the same which facilitates metal removal. Each insert has a cutting edge which is defined by the intersection of a cutting face and a land area. The cutting face is disposed so as to have a neutral rake angle and the cutting edge itself lies in a single plane but has a generally sinusoidal configuration in a direction normal to the cutting face. The milling cutter includes a plurality of insert locating grooves which locate the inserts in a manner such that the cutting edges form straight helixes over at least a portion of the cutter length. The inserts may be reasonably retained in the locating grooves to facilitate ease of removal for repair or replacement purposes.