Annular cutter having radial clearance

Details Annular cutter having radial clearance Annular cutter having radial clearance

B - Operations, Transporting

23

B

76/24, 77/38

B23B 51/04 (2006.01) B23P 15/28 (2006.01)

Patent

CA 1316016

ABSTRACT OF THE DISCLOSURE The annular cutter of the present invention has a body portion with a plurality of teeth circumferentially spaced about the lower end thereof and a plurality of flutes extending upwardly around the outer periphery of the body portion between the teeth. Each of the teeth has at least two circumferentially stepped cutting edges with the trailing edge being the outermost cutting edge. These two cutting edges are separated by a shoulder which in the preferred embodiment is defined by the bottom wall of the flute. This shoulder has a radial clearance adjacent the outermost cutting edge to accommodate the growth of the outermost chip cut by the outermost cutting edge to facilitate discharge of the chips through the flute.

592959

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