Iscar, Ltd.

Eliezer Nessel

Reuven Porat

A clamping arrangement for clamping a pin mounted cutting insert on a tool holder by means of a plurality of clamping balls located within a ball guide groove formed in the tool holder and displaceable into a clamping abutment with the insert by means of a ball displacing member articulated to the tool holder.

Cutting tool holder

A chip breaker arrangement in cutting tool inserts comprising chip breaking grooves that vary in width, depth and/or distance from the cutting edge cyclically, with the variations occurring at either fixed or varying frequencies while the cutting edges are formed in a straight line along the varying chip breaking grooves whereby the same inserts provide effective chip control over a wide range of cutting conditions.

Cutting tool insert with chip breaker

A tool holder for a cutting insert comprising, an insert receiving base member; a locating pin projecting out of the base member so as to extend through a central bore formed in the insert when the latter is located on the base member; a clamping member juxtaposed with respect to the base member so as to be supported by a support zone of the tool holder; a first support surface of the support zone located substantially parallel to the base member; a second wedging surface of the support zone; an elongated recessed portion between the base member and the first surface and into which the wedging surface slopes towards the base member; a rearwardly disposed elongated heel portion of the clamping portion; a forwardly disposed nose portion of the clamping member; a curved abutting surface of the nose portion; an elongated tail portion formed integrally with the nose portion so as to project into the recessed portion in abutting relationship with the wedging surface; and screw biasing means located intermediate said heel portion and said nose portion for screw biasing the clamping member towards the support zone with the heel portion in sliding engagement with the first support surface, with the tail portion in abutting engagement with the wedging surface and with the curved abutting surface adapted to be in a clamping abutting engagement with an edge surface of the insert remote from a cutting portion thereof when the latter is located on the base member.

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Haifa, Israel

Eliezer Nessel