| abstract |
PROBLEM TO BE SOLVED: To provide a coated cutting tool capable of further improving the overall performance of a tool when performing high-load cutting and having a longer tool life, and a cutting method using the tool. A coated cutting tool including a ceramic film on a cemented carbide base material. The base material is provided with a cutting edge ridge line part that has been subjected to round honing or combination honing, a breaker part and a seating surface provided on the scooping surface connected to the cutting edge ridge line part, and a mounting hole for fixing the holder. 1.6mm or more. The ceramic film includes an α-type aluminum oxide film. And, the inside of the honing part, the flank side part of the honing part, and the ten-point average roughness Rz (reference length 5 μm) of the scooping surface side part of the honing part is 0.2 μm or less, the upper part of the breaker part, the bearing surface, and The ten-point average roughness Rz around the mounting hole is 0.5 μm or less. [Selection] Figure 1 |