Kennametal Inc.

Konrad Spitzenberger

Sebastian Schleicher

Ronald Louis Dudzinsky

Karen Anne Craig

Jeffrey Francis Kovac

Andreas Lieber

Jeremy Joseph Verellen

Srinivas Cherla

The invention relates to a cutting insert having a polygonal upper side. Cutting edges, which are alternately configured as roughing cutting edges and finishing cutting edges, are provided at the edges of the upper side. The finishing cutting edges define an incircle (K) having a diameter that is enlarged in comparison to a nominal size of the cutting insert, and the roughing cutting edges define an incircle (K) having a diameter that is reduced in comparison to the nominal size of the cutting insert. The invention further relates to a cutting tool having a tool body on which at least one such cutting insert is disposed.

Cutting insert and cutting tool

Cutting tool systems including a cutting tool and cutting inserts are disclosed. The cutting inserts have indexable cutting edges and seating face features which enable uniform facets along a portion of each cutting edge of the indexable insert. The first and second seating face surfaces of the cutting insert each comprise control cavities that adjoin the cutting edge facet surfaces. Each control cavity allows its corresponding cutting edge to have a facet width that is defined by the cavity to provide uniform surfaces. The control cavities reduce and limit the amount of the first and second seating face surfaces that need to be ground. Methods of making such cutting inserts are disclosed.

Cutting inserts with control cavities

Cutting insert

A double-sided, indexable cutting insert for a milling cutter includes a first surface, a second surface, and side surfaces. Major cutting edges are defined at an intersection between the first and second surfaces and side surfaces. Minor cutting edges and ramping cutting edges are defined at the intersection between the first and second surfaces and side surfaces. The cutting insert is mounted in a milling cutter having a bottom seating surface formed at an angle with respect to a central, rotational axis of the milling cutter, which provides superior performance for both milling and ramping cutting operations.

Double-sided, indexable cutting insert with ramping capability and cutting tool therefor

Cutting insert with corner radii cutting surfaces

Double-sided, indexable cutting insert

An indexable cutting insert having a triangular shape includes three sides and three cutting corners. A first planar surface and a second, parallel planar surface connects the three sides. In one embodiment, three major cutting edges are formed at an intersection between a respective side and the first planar surface. In another aspect, six major cutting edges are formed at an intersection between a respective side and the planar surfaces. In another aspect six major right-handed cutting edges and six major left-handed cutting edges are formed at an intersection between the sides and the first and second planar surfaces.

Indexable cutting insert with a triangular shape

A method of machining a workpiece using a rotary milling cutter is disclosed. The method includes rotating a tool head with a shaft, rough cutting a workpiece with a rough cutting edge of a first partial body to remove a first amount of material from the workpiece, and finish cutting a rough-cut surface of the workpiece with a finishing edge of a second partial body to remove a second amount of material from the workpiece, the second amount of material being smaller than the first amount of material. Both the rough cutting edge of the first partial body and the finishing edge of the second partial body simultaneously engage the workpiece to perform both rough cutting and said finish cutting of the workpiece in a single cutting operation.

Milling cutter and a cutting insert therefor

A milling cutter and a cutting insert therefor for rough and smooth machining of a workpiece. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. &#xa7;1.72(b). As stated in 37 C.F.R. &#xa7;1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading 'Abstract of the Disclosure.' The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

A toolholder has a pocket adapted to receive a double-sided on-edge cutting insert, wherein the corners of each side of the insert are radially shifted with respect to one another and has mounting pads preferably mounted about the sides of the cutting insert. The relief area for the corners of the insert is selectively fabricated to maximize the length of the support pads within the pocket of the toolholder.

Growing community of inventors

Fuerth, Germany

Konrad Spitzenberger