| 摘要 |
PURPOSE:To eliminate errors in assemblage by working respective portions of a punch and an electrode leaving finishing allowances to finish the assembly of these portions with ram type electric discharge machining of wire cut electric discharge machining if necessary. CONSTITUTION:An electrode production device 1 can carry out the working operations by alternatively bringing about an electric discharge machining unit 2 and a wire cut electric discharge machining unit 3 on a base 8. First, is used the unit 2 attaching a head 2a to each base blank to work a thin hole. Then, a wire electrode 3a of the unit 3 is passed through the thin hole for working to bore a hole into which various kinds of punches are inserted. On the other hand, a punch blank is worked by the unit 3 and cut out leaving finishing allowance. Then, when each punch is inserted and assembled in the hole worked in the base blank, the electric discharge machining unit 2 using a rod-like or die electrode is finally used so that the punch cut out leaving the finishing allowance is shaped by generating-molding-working with electric discharge machining to form a metal punch die.
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