HEAD AND A CUTTING INSERT FOR A REAMING TOOL AND THE REAMING TOOL CAPABLE OF FORMING A SMALL SIZE HOLE BY USING THE REAMING TOOL BY MINIMIZING THE VOLUME OF THE CUTTING INSERT

摘要

PURPOSE: A head and a cutting insert for a reaming tool and the reaming tool are provided to use four cutting blades by forming a reaming insert into diamond shape.;CONSTITUTION: A reaming tool comprises a cutting insert(3) and a seat(17). The cutting insert comprises four clearance surfaces(30) and diamond-shaped sections in the symmetrical plane. The clearance surfaces are contacted with each other in facing corners(31). Two cutting blades(33) are formed along each chip surface(29) and used with a chip surface alternatively by an indexing of the cutting insert. The seat comprises a radial supporting surface(18), a tangential supporting surface(19), and an inclined surface(22). The inclined surface is formed at an obtuse angle based on the ground.;COPYRIGHT KIPO 2012