CHANGEABLE TIP AND MILLING CUTTER Russian patent published in 1998 - IPC

FIELD: milling cutters for machining of depressions, for instance, shoulders, grooves and others whose walls are located at an angle of 90 deg to each other. SUBSTANCE: tips is square in shape and designed for installation on cylindrical milling cutter in machining of depressions in worked part and has four turning cutting edges, each includes the first, second and third parts followed one another and inclined at an angle to each other and located so that during milling, the first and second parts of cutting edge worked depression surface perpendicular to its base, and the third part of adjacent cutting edge serves for cleaning the surface of depression base. Besides, when tip is installed on milling cutter, rear angles at top and on opposite end of edge are similar, and at least the first and second parts of each cutting edge are located so that all their points lie on cylindrical surface formed by rotation of straight line parallel to rotation axis of milling cutter round its axis at radius equalling the radius of working part of milling cutter. EFFECT: higher efficiency. 8 cl, 6 dwg