Kennametal Inc.

Andreas Lieber

Lewis Ray Morrison

Juan Seculi

Gianfranco Accardi

Marco Procopio

Howard Murphy

Kumar Reddy Mylavaram Nikhilesh

Lance David Brunetto

Konrad Spitzenberger

Xiangdong Daniel Fang

Sebastian Schleicher

Jean Luc Dufour

Qiang Wu

Kumar Reddy Mylanvaram Nikhilesh

A cutting insert having two opposing end surfaces, two identical opposing major side surfaces and two identical opposing minor side surfaces. Each end surface has four corners with two lowered corners and two raised corners, the two lowered corners being diagonally opposite each other, the two raised corners being diagonally opposite each other. The cutting insert also includes a major cutting edge formed at an intersection of each major edge and the end surface. A first section of the major cutting edge proximate the raised corner constitutes a leading end of the major cutting edge, and a second section of the major cutting edge proximate the lowered corner constitutes a trailing end of the major cutting edge. An angled margin only partially extends along the leading end of the major cutting edge and segments the major cutting edge.

Tangentially mounted indexable cutting insert with segmented cutting edge and triangular-shaped margin

Cutting insert with corner radii cutting surfaces

An indexable, invertable cutting insert has radially-oriented positioning segments on a front face of the insert and radially-oriented positioning segments on the back face of the insert. The radially-oriented positioning segments are shifted on the front face relative to those on the back face such that, when the cutting insert is engaged within the toolholder, the cutting segment utilized on the front face will never be directly opposite the cutting segment utilized on the back face. A toolholder system is made up of the cutting insert and a toolholder capable of securing and indexing the cutting insert.

Indexable circular cutting insert

Cutting insert

Growing community of inventors

Zirndorf, Germany

Andreas Lieber