Throw-away tip with wear sensor

摘要

A throw-away tip (1) of the present invention has a rake face (5) formed an a surface of a base (2) and a flank (8) intersecting with the rake face (5). The intersection ridge between the rake face (5) and flank (8) defines a cutting edge (9). A sensor line (12) is made out of a conductive film extending along the cutting edge (9) and having a predetermined width. The sensor line (12) is provided in an electrically insulative relation with respect to the base (2). According to the present invention, one side edge (L) of the sensor line (12) is provided an the flank (8) substantially in parallel with the intersection ridge, while the other side edge (U) of the sensor line (12) is provided an the rake face (5) side from the intersection ridge.