Patent ID: 7125210
Filing Date: 2006-10-24
Classification: B23C,Y10T

Abstract:
1. A face milling cutter with a shaft section having a longitudinal axis and a tool section axially mounted to the shaft section, the front end of the tool section having at least one flat, arched, lower cutting edge ( 24 ) having a radius, the lower cutting edge joining to a rounded corner cutting edge, and a peripheral straight cutting edge being provided at the periphery of the tool section, the lower cutting edge having a radius r 1 of 1 to 2 times of d 1 wherein d 1 is the diameter of the flight circle of the axially parallel tangent to the rounded corner cutting edge, the beginning of said radius r 1 being offset from said longitudinal axis 0.1 to 0.2 times d 1 , characterized in that the separation distance of the tangent point ( 34 ) of the tangent ( 30 ) from a second tangent ( 36 ) to the lower cutting edge ( 24 ) perpendicular to the shaft axis ( 28 a ) is between 0.08 and 0.12 d 1 ; the center of the circular arc of the lower cutting edge ( 24 ) has a separation distance of a 1 from 0.1 to 0.2 d 1 from the shaft axis ( 28 ); and the radius r 2 of the corner cutting edge ( 26 ) is 0.05 to 0.07 d 1 and wherein the straight peripheral cutting edge ( 28 ) above the tangent point ( 34 ) recoils around a predetermined clearance angle a.