Patent ID: 6071045
Filing Date: 2000-06-06
Classification: B23C,Y10T

Abstract:
A cutting tool assembly comprising:an elongated tool holder (12) having an axis of rotation and a first end for support in a machine and a second end having a pocket (16);a cutting insert (20) disposed in said pocket (16);said cutting insert (20) having first and second oppositely facing, parallel faces interconnected by a bottom (26) and side (28) and top (30) walls with said side walls (28) being parallel to one another, said parallel faces extending co-extensively between said side walls (28);said cutting insert (20) having first (32) and second (34) flutes disposed on opposite sides of said center axis, said first flute (32) extending in an arc from the top wall (30) to one of the side walls (28) and said second flute (34) extending in an arc from the top wall (30) to the other of the side walls (28), said first flute (32) presenting a flute surface disposed at an angle sloping downwardly from said first face (22) to said second face (24), said second flute (34) presenting a flute surface disposed at an angle sloping downwardly from said second face (24) to said first face (22) whereby said flutes (32 and 32) are asymmetrical relative to said center axis, said cutting insert (20) having a hole (36) extending transversely to and between said faces, a fastener (38) extending through said hole (36) and engaging said tool holder (12) for securing said cutting insert (20) in said pocket (16), said top wall (30) lying in a plane which is perpendicular to said center axis and said side walls (28) to define non-cutting intersections between said top wall (30) and said flutes (32 and 34).