Rotary milling cutter
OwnerStephen E. Shanley, Jr.inventor
Life of this patent
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Abstract
The milling cutter of the invention comprises a cutting section having a plurality of blades positioned on the surface and separated one from the other by flutes. At least two blades have one or more smooth segments, exhibiting an even and unbroken land and cutting edge, interspersed with one or more serrated segments containing a row of cutting teeth. The positions of the smooth and serrated segments are staggered from blade to blade so that in the course of one complete revolution of the cutter, each point along a surface being worked by the cutter will be contacted by at least one smooth segment and at least one serrated segment.
Claims27
A milling cutter comprised of a generally cylindrical shank section joined to a cutting section, the cutting section consisting essentially of a hard metal body whose surface has formed into it a plurality of blades separated by flutes, each said blade having a leading side, a cutting edge on the leading side, a land, and a trailing face side;
- at least two of said blades having at least one smooth segment, wherein the land and cutting edge are even and unbroken, and at least one serrated segment, wherein the land consists essentially of a row of cutting teeth, adjacent teeth in the land being separated from each other by a transverse groove in the blade;
- said smooth and serrated segments being located in staggered positions from blade to blade, so that a diametrical plane perpendicular to the axis of the cutter and passing through any point along said axis of the cutting section will intersect at least one smooth cutting segment and one serrated cutting segment to thereby contact and work any point of a workpiece being cut with a smoothing and a serrated segment portion of cutting edge.
Dependencies are inferred from the claim text.