| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for electrochemical machining capable of machining, in a generally curved shape, the edge part of a workpiece where the peripheral wall part of a first hole and the peripheral wall part of a second hole are brought into contact with each other when the first hole and the second hole opened in the peripheral wall part of the first hole are formed in the workpiece. SOLUTION: An insulation member 2 opening at the portion facing the opening part 12b of the second hole 12 is disposed in the first hole 11. A chamber 6 is formed at least around the opening part 12b of the second hole 12 between the insulation member 2 and the peripheral wall part 11a of the first hole 11. An electrode is inserted into at least one of the first hole 11 and the second hole 12. An electrolyte flows from the first hole 11 to the second hole 12 through the opening part 12b of the second hole 12, and a current is supplied between the workpiece 1 and the electrode for machining the edge part 13. COPYRIGHT: (C)2009,JPO&INPIT
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