| 摘要 |
PROBLEM TO BE SOLVED: To provide an inside diameter working tool having superior cutting chip discharging property.SOLUTION: The inside diameter working tool comprises a cutting insert having a main cutting blade on a crossing ridge between an upper surface and a side surface, a fitting part of the cutting insert, and a holder having a cutting liquid feeding unit for feeding cutting liquid to the cutting insert. The cutting insert is arranged in plan view so that one end of the main cutting blade is projected from an outer peripheral surface of the holder, and one end of the main cutting blade is located at the same position as the other end of the main cutting blade, or on the rear end side from the other end of the main cutting blade in the direction from the front end side to the rear end side of the holder. The cutting liquid feeding unit has a feeding front end part formed inside the holder to directly feed the cutting liquid to a side face continuous to the main cutting blade. |
