| 摘要 |
A method of processing an outer profile of a workpiece is provided to improve reliability of product substrate by preventing burr from being generated. In a method of processing an outer profile of a workpiece, when a hollow section(1) crossing the outer peripheral surface(S) of a workpiece exists, a relief hole(8) is formed by using a punching member(7) in a crossing section(D) between a rotating tool and the hollow section such that the relief hole interferes with the outer peripheral surface of the workpiece. When the rotation direction of a blade of the rotating tool follows the movement direction of the rotating tool relative to the outer peripheral surface of the workpiece, the rotating tool enters the hollow section from the relief hole such that the outer peripheral surface of the workpiece is formed.
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