Patent ID: 6152657
Filing Date: 2000-11-28
Classification: B23B,B23C,Y10T

Abstract:
A center cutting ball nose end mill, having a central longitudinal axis, the end mill comprising:a first generally hemispherical cutting end and a second base end and a cylindrical body there between, wherein the body central longitudinal axis intersects the hemispherical and base ends;at least one elongate diamond vein formed on the hemispherical cutting end intersecting the central axis and extending across the hemispherical cutting end, wherein said vein does not perpendicularly cross over a diameter of the cutting end when viewed from an axial direction thereof, and wherein the vein comprises a longitudinal central axis offset in a parallel from a diameter of the cutting end when viewed from an axial direction thereof; anda flute on the hemispherical cutting end exposing a leading edge of the vein for forming a cutting edge beginning at the central axis.