Double-sided, indexable cutting insert with high ramping capability and cutting tool therefor
AssigneeKennametal Inc.
InventorsJean Luc D. Dufour, Ron L. Dudzinsky
Life of this patent
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Abstract
A double-sided, indexable cutting insert for a milling cutter includes a first surface, a second surface, and side surfaces. Cutting edges are defined at an intersection between the first and second surfaces and side surfaces. Each cutting edge includes a first cutting-edge portion, a second cutting-edge portion and a third cutting-edge portion. The first and second surfaces include diagonally opposite recessed regions. The cutting insert is mounted in a milling cutter defining a radial rake angle, A, and a ramping angle, B, with respect to a central, rotational axis of the milling cutter that provide superior performance for both milling and ramping cutting operations.
Claims18
A double-sided, indexable cutting insert for a milling cutter, comprising:
- a first surface including a central planar seating surface;
- a second surface opposite the first surface;
- a first side surface substantially perpendicular to both the first surface and the second surface;
- and
- a first cutting edge defined at an intersection between the first surface and the first side surface,
- wherein the first cutting edge is substantially V-shaped in plan view and includes a first cutting-edge portion extending radially outward with respect to a horizontal axis of the cutting insert, a second cutting-edge portion extending radially outward with respect to the horizontal axis, and a third cutting-edge portion extending between the first cutting-edge portion and the second cutting-edge portion and substantially parallel with respect to the horizontal axis,
- wherein the first surface includes a recessed region adjacent the second cutting-edge portion the recessed region lower in elevation than the central planar seating surface and causes the second cutting-edge portion to be formed with a radius, R, to aid in the evacuation of chips during a cutting operation, and
- wherein the first cutting-edge portion is used during a milling cutting operation and the second cutting-edge portion is used during a ramping cutting operation.
Dependencies are inferred from the claim text.