Patent ID: 7311481

Claim:
An end milling cutter comprising a central longitudinal axis about which said end milling cutter is to be rotated, said end milling cutter comprising: a shaft comprising an internal channel disposed in said shaft; said internal channel being configured to receive and guide chips produced during a cutting process; said internal channel being configured to be operatively connected to a suction device configured to create a suction force in said internal channel to suck chips produced during a cutting process through said internal channel; a milling head being disposed at an end of said shaft; said shaft comprises a diameter; said milling head comprises a diameter; the diameter of said shaft is smaller than the diameter of said milling head, at least in an area that borders said milling head; and said milling head comprising: an end face being disposed at an end of said end milling cutter and facing away from said shaft; said end face being substantially orthogonal to the longitudinal axis; said end face comprising a substantially flat solid portion being disposed substantially in a plane; a peripheral side surface disposed about the perimeter of said milling head; a cutting structure being configured to cut an object in a cutting process; and said cutting structure comprising: a face cutting edge being disposed to lie in said end face and substantially in the plane of said end face of said milling head; a peripheral cutting edge being disposed to lie in said peripheral side surface of said milling head; at least one of said cutting edges being configured to form a positive rake angle; upon said face cutting edge forming a positive rake angle, said face cutting edge being configured as follows: (a) said face cutting edge and said peripheral side surface forming an angle, across a solid portion of said end face between said face cutting edge and said peripheral side surface, at the intersection of said face cutting edge and said peripheral side surface; said face cutting edge angle comprising an acute angle configured to form a positive rake angle; upon said peripheral cutting edge forming a positive rake angle said peripheral cutting edge being configured as follows: (b) said peripheral cutting edge and said end face forming an angle, across a solid portion of said peripheral side surface between said peripheral cutting edge and said end face, at the intersection of said peripheral cutting edge and said end face; and said peripheral cutting edge angle comprising an acute angle configured to form a positive rake angle.