| 摘要 |
The present invention provides a machining method of a non-circular hole which can prevent a cutting tool from interfering with a wall surface of a non-circular shape. The machining method of a non-circular hole performs a cutting process using a cutting tool (17) to form a non-circular hole (30) on a workpiece (19), rotates the workpiece (19) about a first axis (Z-axis) of a coordinate system where the first axis (Z-axis), a second axis (X-axis), and a third axis (Y-axis) are perpendicular to each other, and moves the cutting tool (17) in a direction of an axial line of the second axis (X-axis) and a direction of an axial line of the third axis (Y-axis) to perform the cutting process to prevent a relief surface (25) of the cutting tool (17) from interfering with a wall surface (27) of the non-circular hole (30). |
