| 摘要 |
PROBLEM TO BE SOLVED: To provide a machining method capable of machining a fine shape having a step difference in high precision without a tool mounting positional error and a tool positioning error. SOLUTION: Sharp step difference parts 3a, 3b are machined on an electrical discharge machining electrode 3 by machining them by using a columnar machining tool 1, cross-section shape projected parts 1a, 1b corresponding to a shape of the step difference parts are formed on a bottom part of the machining tool 1 by discharge-machining them while feeding the machining tool 1 along the step difference parts 3a, 3b of the electrical discharge machining electrode 3, thereafter, they are scanned by relatively moving the machining tool 1 within the same flat surface along a surface of a work 2 by fixing a cutting position in the vertical direction against the work 2, and the step differences having height of the projected parts 1a, 1b of the bottom part of the machining tool 1 are machined on the work 2.
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