| 摘要 |
PROBLEM TO BE SOLVED: To control vibration generated in a ball end mill at the time of working an inclined face. SOLUTION: At the time of final finishing work for an inclined face of a work piece using a ball end mill 1, a cutting allowance (t) is set to lie at right angle to an axis 2 of the ball end mill 1 and becomes symmetrical about the axis 2 of the ball end mill 1 in the opposite direction of a worked surface 5 of the work piece. Preferably, t=2Rsinθis set by use of an angleθto the direction lying at right angle to a tip radius R of the ball end mill 1 and the axis 2 of the ball end mill 1 on the worked surface 5 of the work piece.
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