A CUTTING INSERT FOR CUTTING, MILLING OR DRILLING OF METAL, A TOOL HOLDER AND A TOOL PROVIDED THEREWITH

摘要

A cutting insert for cutting, milling or drilling of metal comprising a sensor (2) for detecting a predetermined wear of the cutting insert caused by operation thereof on a metal work piece, wherein the sensor (2) comprises at least two contact regions (3-8) through which the sensor (2) is connectable to external measuring circuitry. The sensor (2) comprises at least two leads (9-14) which are connected to a respective of the at least two contact regions (3-8), wherein each lead (9-14) presents a respective free end positioned such that, upon the predetermined wear caused by the operation of the cutting insert on a metal work piece, the free ends will be connected to each other by the metal work piece or by a chip resulting from the operation of the cutting insert on the metal work piece.