| 摘要 |
PROBLEM TO BE SOLVED: To provide a machining method by an end mill capable of improving a critical depth of cut in which a workpiece does not cause vibration due to a load during cutting, when the thin-plate shaped workpiece is cut by a taper end mill.SOLUTION: There is provided a machining method by an end mill, which is characterized in that the workpiece is machined with a tool inclination angle A[degree] calculated from a following expression (1) based on a torsion angle &bgr;[degree] of a taper end mill (tool) 1 and predetermined factors a, b, c, d: a×&bgr;+b≤A≤c×&bgr;+d {where, 10≤&bgr;≤50[degree]}...(1) |
