Round cutting insert with serrated topography

摘要

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.

主权项

1. 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; 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; and a plurality of curved stop surfaces uniformly disposed around the frusto-conical sidewall and extending to the bottom surface of the insert, wherein each of the curved stop surfaces includes a pair of mirror-symmetrical oblique engagement portions, wherein each of the stop surfaces is defined by side edges formed by mirror-symmetrical S-type curves between top and bottom ends of each surface, wherein a central portion of each the stop surfaces is tapered such that a depth of each of the stop surfaces increases between the top and bottom ends of each surface, and wherein the plurality of serrations reduce regenerative chatter during a cutting operation.