Rotary Cutting Tool For Cutting A Curved Surface

摘要

The present invention relates to a rotary cutting tool. The rotary cutting tool has a cutting blade part having bottom blade surfaces on the lateral cross-section thereof and side blade surface continuously formed on the bottom blade surfaces. The bottom blade surface with a bottom blade is indented to protrude at a predetermined bottom curvature, and the side blade surface forms an edge part rounded at a predetermined corner curvature. Therefore, the amount of marks left on the surface of a workpiece by the transfer of the cutting tool when the curved-surface part of the workpiece is cut can be reduced, so a smooth and a high-quality processed curved surface can be obtained.