| 摘要 |
PROBLEM TO BE SOLVED: To prevent a cutting radius from being varied though a tool body is polished by fixing firmly the tool body to a milling cutter main body by a simple mechanism by a method wherein a means correcting variation of the cutting radius when a tool body rake face is polished, is made an inclination formed on a bottom face of a tool groove, and an inclination formed to an inversed spot abutting against the inclination. SOLUTION: A tool groove 13 storing a tool body 21 and an inversed spot 26 is formed on an outer periphery side of a milling cutter main body 12. Further, an ascent inclination 19 is formed by a specific angleθto a line C normal to a backward direction of a rotary direction. Further, an inclination 31 holding an upper face 28a of a horizontal part 28 is formed on an under face 30 of the inversed spot of the horizontal part 28 by the same angleθas the inclination 19 formed on the bottom face 16 of the tool groove 16. Then, when a fixing screw is spirally advanced to push the inversed spot 26, the inversed spot 26 side is moved by shifting along the inclination 19, a tool body rear face 23 of the tool body 21 side is moved by shifting in an outer peripheral direction along a backward direction 14 of the rotary direction of the tool groove 13, and the tool 21 is positioned at a specific position.
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