| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem in a cutting processing with use of a conventional end mill, where generally the end mill with 2-6 cutting edges without supply holes is mainly used, that fluid such as air and oil is discharged from the outside to the cutting point for the purpose of eliminating or reducing cutting chips, heat, and processing deterioration produced in the cutting processing, however, which is not sufficiently effective. SOLUTION: The cutting tool includes cutting edges of 6-30 multi edges. A discharge hole is open in the axial direction, or direction with an angle with respect to the angle perpendicular to the axis. COPYRIGHT: (C)2011,JPO&INPIT
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