| 摘要 |
PROBLEM TO BE SOLVED: To provide a cutting tool with its service life prolonged by suppressing the premature wear and sudden breakage of a cutting blade produced by the heating of the area near the cutting blade (cutting portion) by a control mechanism for easily and accurately controlling the jetting pressure of a fluid. SOLUTION: This cutting tool comprises a tool body part and a cutting blade part which is positioned at the end of the tool body part and on which at least one cutting blade is formed. The tool body part comprises a first coolant hole formed therethrough. The cutting blade part comprises a second coolant hole which communicates with the first coolant hole and which is opened to the outside of the cutting blade part. A control member having a groove part formed from one end to the other end along the axis thereof is detachably fitted to the opening of the second coolant hole. The area of the control member at the cross section of the groove part generally perpendicular to the axis thereof is larger at the other end than at the one end. COPYRIGHT: (C)2009,JPO&INPIT
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