FIELD: milling.
SUBSTANCE: single-sided ramping milling insert (14) has top and bottom surfaces (20, 22) and peripheral surface (24) which extends therebetween. Peripheral surface (24) meets top and bottom surfaces (20, 22) at respective top and bottom edges (28, 30). Top edge (28) includes two opposite side cutting edges (32), two opposite ramping cutting edges (30), two diagonally opposite raised corner cutting edges (44) and two diagonally opposite associated lowered corner cutting edges (54). Lowered corner cutting edges (54) are closer to bottom surface (22) than raised corner cutting edges (44). Bottom edge (30) has two diagonally opposite bottom corner edges (64). Lowered corner cutting edges (54) and bottom corner edges (64) are convexly curved and depression (66) is recessed into peripheral surface (24) between each lowered corner cutting edge (54) and its associated bottom corner edge (64), the depression configured for providing relief from a convex workpiece surface cut by lowered corner cutting edge (54) during ramping operations.
EFFECT: enabling ramping operations.
16 cl, 13 dwg
