CHANGEABLE CUTTING PLATE Russian patent published in 1999 - IPC

FIELD: treatment of hollows, beads, recesses and grooves. SUBSTANCE: plate has flat square base, square upper front surface and rear edges going outside corresponding edges of base. Every rear edge crosses front surface, thus forming main and auxiliary cutting edges coupled to each other. Every auxiliary cutting edge is spaced outside relative to rear edge adjacent to it and is shifted to the base with respect to main cutting edge coupled to it. Every auxiliary cutting edge does not protrude beyond limits of main cutting edge coupled to it. EFFECT: enlarged depth of milling. 4 cl, 6 dwg