Kennametal Inc.

Franz Havrda

Rudi Hartlohner

Igor Kaufmann

Anwar Sadat Mohideen Abdul

Rudi Hartl&ouml;hner

David C Johnston

Rudi Hartlöhner

The invention relates to an interchangeable cutting insert () having a shank (), which transitions into a cutting head (), which has a chipping surface (), which, when viewed from above, is a segment of a circle with a height greater than the radius of the chipping surface (), wherein the chord of the segment of a circle constitutes the transition to the shank (), wherein a cutting edge () is formed on the outer edge of the chipping surface and multiple chip-breaking structures () are provided on the chipping surface (), the chip-breaking structures having depressions () in the chipping surface (), between which projections () are arranged, which protrude beyond the chipping surface ().

Cutting insert

A groove insert to be received in a tool holder has, along its top and bottom side and on its rear side, a holding structure which is formed by holding faces which taper toward one another and by way of which the groove insert is fixed in the tool holder in a positive locking manner. The tool holder has corresponding counter faces. The groove insert and the tool holder form a groove cutting tool.

Groove insert, clamping holder for a groove insert and groove cutting tool

A cutting insert having a main lip, a rake face and at least one coolant duct, which is formed on the top side of the cutting insert, is disclosed. The at least one coolant duct runs at least partially in the rake face towards the main lip and the width increases towards the main lip.

Cutting insert having a coolant duct

A tangential indexable cutting insert having eight lips which are distributed in pairs over four side faces of the indexable cutting insert, each lip being formed by a main lip which is formed by the intersection of one of the side faces with a base face, a secondary lip, which is formed by the intersection of the side face with an adjacent side face, and a corner edge () adjoining the main lip and the secondary lip, is distinguished by the fact that the main lip has a front portion () which is located at the level of the corner edge, a rear portion which is located at a lower level closer to a center axis of the indexable cutting insert, and a transition portion between the front portion and the rear portion, the three portions being located in one plane.

Tangential indexable cutting insert

Cutting tool, such as for end-cut and longitudinal turning, and for cutting grooves in a workpiece, which has an end or major cutting edge and two side or minor cutting edges, each of which are connected to the end or major cutting edge by two outer corners. Additional corner chip-breakers are formed between each of the outer corners and the ends of a chip-guiding rib.

Growing community of inventors

Grossenseebach, Germany

Franz Havrda