Dimpled insert with retaining clamp

A combination tool holder and wear insert, the wear insert having a dimple and boss, the boss disposed within the dimple, the boss having a boss wall and a boss surface and a point of intersection between the boss wall and the boss surface, comprising:

• (a) a tool holder body including an insert-receiving pocket formed at a forward end thereof and having a bottom and at least one side wall for receiving the insert, the tool holder including an internally threaded clamp-securing bore formed between an inclined surface and the insert-receiving pocket;
• (b) a clamp arranged on the tool holder body, the clamp including a lower face with a nose portion having a shaped lip portion and a clamp contour portion wherein the shaped lip portion is adjacent to the clamp contour portion, the clamp having a threaded aperture formed therethrough;
• (c) a clamp screw inserted into the threaded aperture of the clamp, the clamp screw having a threaded portion capable of being threaded onto the internally threaded clamp-securing bore of the tool holder body and the threaded aperture of the clamp to bring the clamp into pressing engagement with the insert, and
• wherein the shaped lip and clamp contour portion engages the boss wall and the boss surface of the wear insert point of the intersection between the boss wall and the boss surface and the portion of the boss surface in contact with the point of intersection between the boss wall and the boss surface when the clamp is brought into pressing engagement with the wear insert.

A method of clamping a wear insert to a tool holder, the wear insert having a dimple with a boss disposed therein wherein the boss having a boss wall and a boss surface and a point of intersection between the boss wall and the boss surface, the tool holder including a tool holder body having an insert-receiving pocket formed at a forward end thereof and having a bottom and at least one side wall, the insert-receiving pocket capable of receiving the wear insert, comprising the steps of:

• (a) arranging a clamp on the tool holder body, the clamp including a lower face with a nose portion having a shaped lip portion and a clamp contour portion wherein the shaped lip portion is adjacent to the clamp contour portion, the clamp having a threaded aperture formed therethrough;
• (b) inserting a clamp screw into the aperture of the clamp, the clamp screw having a threaded portion capable of being threaded into the internally threaded clamp-securing bore of the tool holder to bring the clamp into pressing engagement with the wear insert, whereby the shaped lip portion and the clamp contour portion of the clamp engages only a boss wall and a boss surface of the boss the point of the intersection between the boss wall and the boss surface and the portion of the boss surface in contact with the point of intersection between the boss wall and the boss surface when the clamp is brought into pressing engagement with the wear insert.