Kennametal Inc.

Manchester Tool Company

Roger Nicholas

A tool holder assembly that includes a tool holder member adapted to be secured to a machine tool and a cutting insert support/clamp for clamping and supporting a cutting insert. The support/clamp member includes a plurality of serrations that are engageable with complementally formed serrations on the tool holder whereby a tight fitting engagement is achieved using removable fasteners. The support/clamp includes a clamping arm elastically movable towards and away from a support base and a clamping block connected to the connecting arm adapted to receive clamping forces from a threaded clamping bolt. The clamping bolt defines a force applying surface located in a first plane whereas the clamping block defines a force receiving surface located in a second plane, the first and second planes located at a diverging angle with respect to each other. The clamping block includes an edge portion engageable with a step on the tool holder that is spaced from the clamping arm. The diverging planes and the engagement of the clamping block with the stepped portion increases the force applied by the clamping arm to the cutting insert for a given adjustment of the clamping bolt and resists rollover of the insert.

Tool holder assembly

A cutting tool assembly () including a tool holder () having a removeable clamp (). A cutting insert support blade member () is removably held in the tool holder by the clamp (). The cutting insert support blade () includes at least one, preferably two, insert receiving pockets (). The pockets () are defined by a body portion () and a clamp portion () joined together by an integrally formed resilient or deformable portion () which permits slight resilient movement between the clamping and body portions to facilitate the installation of a cutting insert () in a pocket. When the insert support blade () is mounted in the tool holder (), the clamp inserts clamping forces to the clamping portion () of the insert support blade which serves to secure the insert support blade to the tool holder and exert clamping forces on an insert () held in the pocket. The integrally formed resilient/deformable portion () includes a plurality of slots (), some of which open into an aperture () spaced from a pocket (). The slots enable resilient movement between the clamping and body portions.

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Akron, OH, United States of America

Roger Nicholas