Abstract: An indexable turning insert has main upper and lower surfaces of polygonal shape joined by side surfaces. Insert corners are defined by the intersection of insert sides at each corner of the polygonal surfaces, insert corners having a curve of relatively small radius defining the nose of the corner. The inserts are at least partially symmetrical and have a plurality of identical cutting edges. Adjacent the corner nose of an identical cutting edge are wiping surfaces comprising at least one curved segment joining the insert corner radius and defined by a radius larger than the corner radius and at least one flat segment intersecting the insert side at a shallow angle.

Abstract: An indexable turning insert has main upper and lower surfaces of polygonal shape joined by side surfaces. Insert corners are defined by the intersection of insert sides at each corner of the polygonal surfaces, insert corners having a curve of relatively small radius defining the nose of the corner. The inserts are at least partially symmetrical and have a plurality of identical cutting edges. Adjacent the corner nose of an identical cutting edge are wiping surfaces comprising at least one curved segment joining the insert corner radius and defined by a radius larger than the corner radius and at least one flat segment intersecting the insert side at a shallow angle.

Abstract: An indexable, on edge, reversible cutting insert for use with a boring toolhead, comprising a body having parallelogram shaped top and bottom seating faces equipped with an off center aperture there through, and at least one cutting face. The cutting face is equipped with a bidirectional chip breaker groove on each side of the cutting face to define an island, each side groove having a slotting, progressively deepening recess extending along the edge of said cutting face, said groove presenting an increasing incident angled and having a positive rake and an axial rake around the edge of the cutting face, which together form an obtuse angle, said groove forming at least two cutting corners diagonally apposed to each other. Each cutting corner is comprised of a scalloped radius formed in the island which intersects a chip directional flat formed in the groove, at an obtuse angle to form a bidirectional pocket area.

Abstract: An ultra light duty polygonal lay down indexable insert having a scalloped shaped island symmetrically disposed on the top or bottom surface of the insert.

Abstract: A polygonal, lay down indexable cutting insert for eight feed and light depth of cut application. The insert has intermittent seating pads, chipbreaker pads, and stabilizer pads and is configured to allow coolant to be circulated across the body of the insert during cutting operations.

Abstract: An indexable improved force distribution cutting insert having a tapered cutting edge along its periphery with the greatest height at each corner of the insert and descending bi-directionally toward the centerline of the insert to define a resultant ridge to improve impact resistance at each corner.

Abstract: An indexable improved force distribution cutting insert having an arcuate concave convex cutting edge and a body portion having an arcuate concave convex configuration corresponding to the cutting edge.

Abstract: A high depth, low force, polygonal throw away indexable cutting insert to turn ductile materials like steel at low to high cutting speeds and medium to high ranges of feed and depth of cut.

Abstract: A high feed/heavy depth of cut indexable insert for the aluminum wheel turning market featuring a cutting edge with higher elevation than the central island chipbreaker forms.

Abstract: A method for making a compact for a densified cutting insert, an easily machinable material is cut to the desired form, a plastic molding material having specific properties is contacted with the shaped machinable material, hardened to form a mold, and the resulting mold is used to form a compact for a cutting insert having the desired configuration which compact may be subsequently densified.

Abstract: In a ceramic indexable cutting insert, an edge strengthening land extends rearwardly of a beveled cutting edge at an angle of from about 80 to about 100 degrees with respect to the peripheral side surface, and a grooved recess extents rearwardly and along the edge strengthening land to direct chips upwardly and outwardly away from the insert and the cutting edge. In one embodiment of the present invention intended for conditions of heavy depth of cut, enhanced edge strength is sacrificed and an edge strengthened land is not provided.

Abstract: A polygonal indexable cutting insert has a chip breaker with a backwall having a main portion spaced from the cutting edge and including a plurality lands as to deflect chips in a direction toward the center of the insert.

Abstract: A polygonal indexable cutting insert has a chip breaker with a backwall arranged in a sinuous path with the portion approaching the corner having a shallower slope than the main portion.

Abstract: A polygonal indexable cutting insert has a chip breaker with a backwall arranged in a sinuous path so as to deflect chips in a direction toward the center of the insert.