Patent ID: 6644896
Filing Date: 2003-11-11
Classification: B27F,B27G,Y10T

Abstract:
Replaceable blade bodies for a slotting milling cutter rotatable about an axis comprising:a plurality of adjacent projecting cutting blades integrally formed in a comb shape in the replaceable blade bodies; said blade bodies each having a seating surface substantially parallel to the axis for seating the blades; bottom edges formed at troughs between one of said plurality of adjacent projecting cutting blades and another of said plurality of adjacent projecting cutting blades adjacent thereto on the same plane as rake faces of the projecting cutting blades; bottom grooves in the bottom edges having a width less than that of the bottom edges, said bottom grooves being a slant face with respect to said seating surface formed from a predetermined point toward the rake faces in the bottom edges diagonally toward major flanks thereof, respectively; and a coating of hard films by means of physical vapor deposition method on said replaceable blade bodies, thus further coating areas near the bottom edges with the hard films.