Kennametal Inc.

James Robert Kasperik

Joseph Victor Nelson

John P Brosnahan

Kenneth L Niebauer

James Michael Waggle

Timothy G Friedline

Terry L Ashley

Richard Ray

Dieter H Fischer

An assembly for retaining a cutting insert in a pocket of a tool holder includes a locking pin, a spring disposed in the bore of the tool holder, a locking plate disposed in the bore between the spring and the locking pin, and a set screw for retaining the assembly. The locking plate is biased against a ledge of the bore to cause the locking pin to draw and retain the cutting insert in a direction such that the cutting insert is held in a secured position against the pocket of the tool holder. To release the cutting insert, a force is applied to the assembly to counteract the biasing force of the spring. The locking pin or the locking plate may include a flat surface that cooperates with a flat surface on the bore to act as a key to proper orientate the assembly in the bore.

Assembly for retaining a cutting insert in a pocket of a tool holder

Cutting insert

A cutting insert having an upper and a lower base face; side walls adjoining the faces; at least one cutting edge formed at an intersection of the upper face and a side wall; and at least one cutting corner formed at an intersection of an adjacent pair of side walls. A chip control structure is formed in the upper face extending along the cutting edge from the cutting corner for at least an effective cutting length of the cutting edge. A land surface spaces the chip control structure from the cutting edge. The chip control structure includes multiple radially spaced grooves, wherein the grooves of the chip control structure have a depth generally decreasing from the land toward the center of the insert.

Multiple groove chip control for cutting insert

Cutting tool insert

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Latrobe, PA, United States of America

James Robert Kasperik