CUTTING EDGE REPLACEABLE CUTTING TOOL

摘要

PROBLEM TO BE SOLVED: To provide a cutting edge replaceable cutting tool capable of stably rotating a driven cutting insert, and thereby precise cutting work can be stably performed and a tool life can be extended.SOLUTION: A cutting edge replaceable cutting tool has a disc-like shape and includes a cutting insert 3 having a cutting edge 6 on an outer peripheral edge, and a tool body 2 having an insert attachment seat 5 mounted with the cutting insert 3 such that the cutting insert 3 rotates around an insert axis. The insert attachment seat 5 includes a coolant hole 5d for ejecting coolant between the insert attachment seat 5 and the cutting insert 3.