Patent ID: 11135656

Abstract:
A cutting tool includes a holder having an upper jaw and a lower jaw, and an insert clamped between the jaws. A large-diameter hole in a lower-jaw side of the holder communicates with a lower-jaw channel, and a threaded hole in an upper-jaw side of the holder communicates with an upper-jaw channel. A threaded member has a head, a closed-bottom hollow open to the head, branch holes through which the hollow communicates with an outer circumferential surface thereof, and a screw-driving portion in a front end thereof. The threaded member is inserted from the large-diameter hole and screwed into the threaded hole until a front surface of the head seats on a bearing surface of the large-diameter hole and clamps the insert. Then, the large diameter hole, the lower-jaw channel, the hollow, the branch holes, and the upper-jaw channel are in communication for supplying coolant to the insert.