Kennametal Inc.

Dennis G Jones

James F McCreery

Edward L Sorice

A cutting insert, especially for milling operations, in which at least one face of the insert has recesses extending from respective corners thereof along respective edges of the inserts. The recesses widen in a direction away from the respective corners and are generally 'V' shaped in cross section. The walls forming the bottom of the insert are in the form of skewed planes and make increasing included angles with the respective face of the insert in a direction away from the respective corner of the insert. The recesses at the wider ends have a concave wall portion extending upwardly to the respective face of the insert.

Cutting insert, especially for milling operations

A cutting insert of hard wear resistant material which provides a cutting edge useful over very wide ranges of metalworking conditions and effective for reducing cutting machine power requirements and providing safe and efficient chip control, simultaneously. The cutting insert has a narrow land area along the cutting edge and a wall means leading downwardly and inwardly from the inner edge of the land area and a planar surface extending inwardly from the lower edge of the wall means. The insert is free of any 'chip groove,' having a rising rearward wall, per se, and dimensions are given wherein it has been found that chip formation and breakage occur as naturally as possible with a minimum of work effort input for bending or breaking the chip. Power consumption is reduced and individual chip formations are controllable over a wider range of work conditions than heretofore possible.

Growing community of inventors

Greensburg, PA, United States of America

Dennis G Jones