| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tip replaceable rotary cutting tool and cutting insert using te same, capable of suppressing chips from clogging between two cutting inserts.SOLUTION: A cutting insert 50 is a tip replaceable rotary cutting tool, including a tool body 10 rotatable around a rotation axial line C, and the cutting insert 50 which is detachably attached to a tip end region of the tool body 10. At least two cutting inserts 50 are present at positions of rotational symmetry about the rotation axial line C. The cutting insert 50 includes an outer blade 51 extending to an outer peripheral side from the rotation axial line C side, and an inner blade 52 which is connected to the outer blade 51 and is arranged on the rotation axial line C side. When viewed from the tip end side of the tool, the inner blade 52 of at least one of the cutting inserts 50 is convexed toward the rotation axial line C.</p> |
