Patent ID: 11897042
Assignee: KYOCERA SGS PRECISION TOOLS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A rotary cutting tool that includes a variable radius gash geometry and a plurality of end cutting edges, the variable radius gash geometry comprising:
a plurality of gash grinds, with each of the plurality of gash grind being associated with one of the plurality of end cutting edges;
a first gash grind of the plurality of gash grinds positioned between a first end cutting edge from the plurality of end cutting edges and a second end cutting edge from the plurality of end cutting edges, the first gash grind having a first gash surface with a first width extending between a first axial rake face and a first clearance face, the first axial rake face extending from the first end cutting edge towards the first gash surface, and the first clearance face extending from the first gash surface away from the first axial rake face and towards the second end cutting edge; and
a second gash grind having a second gash surface with a second width extending between a second axial rake face and a second clearance face, the second axial rake face extending from the second end cutting edge towards the second gash surface, and the second clearance face extending from the second gash surface away from the second axial rake face and towards a third end cutting edge;
wherein the first gash surface is defined by a first radius and the second gash surface is defined by a second radius that is different than the first radius,
wherein each of the plurality of end cutting edges are of equal length.