Patent attributes
The present invention relates to a coated cutting insert having a substrate, a base layer which is formed on the substrate and an indicating layer which is formed on a portion of the base layer, characterized in that in this substrate, at least one surface serves as a rake face, at least one other surface serves as a flank face, and a ridge where the rake face and the flank face cross serves as a cutting edge, the base layer has a color which is different from that of the above described indicating layer, and this indicating layer is formed on the flank face, and on the base layer over an entirety or a portion of a region excluding a region extending from the cutting edge in the vertical direction with a distance of no less than 0.2 mm and less than 3.0 mm.
