Rotary cutting tool having pcd cutting tip
AssigneeKennametal Inc.
InventorKarthik Sampath
Life of this patent
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Abstract
A method of forming a cutting tool includes: providing a PCD coated nib of material formed in the shape of a rotary cutting tip; brazing the nib onto a generally cylindrical rod member disposed about a central longitudinal axis, the generally cylindrical rod member having a number of coolant passages formed therein at a first helix angle relative to the central longitudinal axis; and grinding a number of differential flutes of varying helix angles with respect to the central longitudinal axis into the brazed cylindrical rod and nib, each differential flute being oriented such that a corresponding coolant passage of the number of coolant passages breaks out within a corresponding flute.
Claims8
1-6. (canceled)
A method of forming a cutting tool, the method comprising:
- providing a PCD coated nib of material formed in the shape of a rotary cutting tip;
- brazing the nib onto a generally cylindrical rod member disposed about a central longitudinal axis, the generally cylindrical rod member having a number of coolant passages formed therein at a first helix angle relative to the central longitudinal axis;
- and
- grinding a number of differential flutes of varying helix angles with respect to the central longitudinal axis into the brazed cylindrical rod and nib, each differential flute being oriented such that a corresponding coolant passage of the number of coolant passages breaks out within a corresponding flute.
Dependencies are inferred from the claim text.