Patent ID: 7549825
Filing Date: 2009-06-23
Classification: B23C,Y10T

Abstract:
1. A milling cutter for the cutting machining of a workpiece, the cutter comprising a tool body having a substantially circular cross section defining a center axis with a plurality of pockets distributed around the periphery of the tool body and cutting inserts received in respective ones of the pockets; each insert comprising a rake face, a main flank, a secondary flank intersecting the rake face and the main flank, and at least one main cutting edge formed by an intersection of the rake face and the main flank; the cutting insert, as viewed in a direction perpendicular to the main flank, being shaped as a parallelogram which is not right-angled, wherein the at least one main cutting edge extends an angle other than 90° relative to the cutting direction; wherein the cutting direction is parallel to the secondary flank; the cutting inserts being arranged with the cutting edge being in an active position inclined relative to the center axis by an angle of inclination in the range of 10 and 40°, wherein the flank of each cutting insert includes a recess dividing the main cutting edge into first and second cutting edge portions, wherein the tool body includes a cylindrical peripheral surface and inserts disposed in pockets disposed in said peripheral surface, wherein there are two groups of cutting inserts disposed in said peripheral surface which are axially offset from one another, and wherein the flank of each insert includes an interruption region dividing the main cutting edge into spaced-apart cutting edge portions, the cutting inserts being arranged in an overlapping relationship with their cutting edges such that one of the two groups of the cutting inserts arranged on the peripheral surface of the tool body is arranged relative to the other one of those two groups in such a way that a respective one of the main cutting edge portions of the one group covers the interruption regions of the other group.