Interlocking, or form fitting cutting bit or chip

A cutting bit (3) for a material removal tool (1) comprising

• a base body (8), having a circular bottom face and an axis of symmetry passing through the center of the circular bottom face and perpendicular thereto, a top (7) opposite and spaced apart from the bottom face and being, at least in part, of circular shape, and a side face (9);
• a chip face provided on the top (7), which with the side face (9) defines a cutting edge (14) and against which, in use, forces acting in circumferential direction may occur, having a tendency to rotate the cutting bit (3);
• an opening (11) formed in the base body (8) passing essentially coaxially through the base body (8) for receiving an attaching element (12), to secure on, and press the cutting bit (8) on the material removal tool with the cutting bit bottom face (6) of the base body engaging a seat face (23) provided on the material removal tool (1);
• and
• wherein said top has means for preventing relative rotation of the base body (8) with respect to the seat face (23) of the material removal tool (1) under forces arising in operation of the material removal tool comprising
• a group of interengaging, interlocking surface formations consisting essentially of protrusions or recesses (13) on the top (7), of the base body, and located on a theoretical circle concentric to said axis of symmetry, for engagement with a complementary securing means having complementary recesses or protrusions, connectable to the material removal tool (1), for restraining and securing said cutting bit (3) with respect to rotation about said axis of symmetry relative to the material removal tool (1).