Round cutting insert with serrated topography
AssigneeKennametal Inc.
InventorsBrad Daniel Hoffer, Thomas Jerry Long, II
Life of this patent
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Abstract
A cutting insert with a serrated topography includes a top surface terminating in a circular cutting edge, a bottom surface and a frusto-conical sidewall interconnecting the top surface and the bottom surface, and a plurality of serrations on the top surface uniformly disposed around the circular cutting edge and extending radially inward from the cutting edge in such a way that a bisector through each serration passes through a central axis of the cutting insert. The plurality of serrations are positioned in a cutting tool in such a way so as to reduce regenerative chatter during a cutting operation. A method of reducing generative chatter by positioning the cutting inserts in a particular fashion in a cutting tool is also disclosed.
Claims10
A cutting insert with a serrated topography, comprising:
- a top surface terminating in a circular cutting edge, a bottom surface and a frusto-conical sidewall interconnecting the top surface and the bottom surface;
- and
- a plurality of serrations uniformly disposed on the top surface and extending radially inward from the cutting edge in such a way that a bisector through each serration passes through a central axis of the cutting insert,
- wherein the plurality of serrations reduce regenerative chatter during a cutting operation.
A method of reducing regenerative chatter in a cutting tool having a plurality of cutting inserts with a plurality of serrations on a top surface, the method comprising:
- positioning a first cutting insert of the plurality of cutting inserts at a first serration position of 0 degrees;
- and
- positioning a second cutting insert of the plurality of cutting inserts at a second serration position by rotating the second cutting insert with respect to the first cutting insert ½ (360/(a total number of serrations)) degrees.
Dependencies are inferred from the claim text.