Importance

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Abstract

Apparatus for sharpening the face cutting edges of an end mill is comprised of a rotatable abrasive wheel and three platforms adapted to provide accurate positioning in a vertical and two lateral directions. The third platform, which is uppermost and tilted in the direction of the abrasive wheel, supports a rotatable turret having a chuck which holds the end mill. The apparatus permits stepwise contact of the land and chamfer zones of the trailing surface associated with each face cutting edge with the abrasive wheel rotating in a plane perpendicular to said trailing surface. The land and chamfer zones are caused to contact the abrasive wheel at two different sites in a lower quadrant of its circular periphery, thereby producing different inclinations of said zones. Because of the tilt of the third platform, both the land and chamfer zones have the same dish angle of between about 0.degree. and 3.degree..

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First Claim