| 摘要 |
PROBLEM TO BE SOLVED: To prevent a plastic deformation of a fastener for a tool by providing a stopper for the fastener. SOLUTION: A tool 10 has a holder 11 having a cutting insert recess 12. The holder 11 has an inclined surface provided at a distance from the cutting insert recess 12. The inclined surface is inclined in the direction downward from the cutting insert recess 12. The holder 11 has a screw hole for fastening a faster. A cutting insert 21 is provided on the cutting insert recess 12, having an upper surface 22 at least a part of which is flat. A fastening means 25 for operating in cooperation with a fastener hole 37 and a hole is provided so as to push the cutting insert 21 toward inside in the above direction in attaching the cutting insert 21. The fastener and the holder 11 have a spring and/or a stopper surface provided against the fasteners movement direction. |
