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US 10,005,137 B2Granted
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.
Claims7
A drill insert comprising:
- a pair of cutting webs inclined relative to each other;
- and
- a pair of opposed cutting portions, each cutting portion partially defining a side portion of a corresponding cutting web, each cutting portion comprising:
- an outer cutting edge;
- and
- an inner cutting edge connected to the outer cutting edge at a transition point;
- wherein the inner cutting edge of each cutting portion converge at a point region and each inner cutting edge is sinusoidal in shape as 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 (1,0) defined as the transition point.
4 more elements
Dependencies are inferred from the claim text.