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US 2018/0257152 A1Published application
Cutting tool
AssigneeY. G-1 Tool. Co.
InventorYoung Bae Lee
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to cutting tools and cutting inserts in general, and more particularly to the specific shapes of cutting edges on cutting tools and cutting inserts. In an embodiment, a cutting tool with a cutting edge formed as a sinusoidal curve is provided. In an embodiment, a rotary drill bit including a cutting insert comprising a sinusoidal curve is provided.
Claims11
A cutting insert comprising:
- a pair of cutting webs inclined relative to each other so as to converge at a point region;
- each cutting web including an inner cutting edge, an outer cutting edge and a transition point disposed between the inner and outer cutting edges;
- wherein the inner cutting edge extends from the point region to the transition point and has a sinusoidal configuration described by y=sin(2*π*x+π), with x describing an x coordinate on an x axis, y describing a y coordinate on a y axis that is perpendicular to the x axis, the point (0,0) defined as the point region, and the point (z,0) defined as the transition point, where z is at least 0.5 or greater.
The cutting insert of claim 10, further comprising a chisel defined by the first face, the valley, the second face and the inner cutting edge of each of the cutting webs converging to the point region.
Dependencies are inferred from the claim text.