| 摘要 |
PROBLEM TO BE SOLVED: To largely and efficiently machine an object to be machined in a short time, by providing a control device for performing desired discharge rough machining and finishing machining by sequentially facing the object to be machined to a standard wire electrode and a slender wire electrode. SOLUTION: Each surface of an object to be machined is sequentially divided and positioned according to a program, each surface is machined and molded using a standard wire electrode 23 in a given high speed discharge machining condition, and normally finally, forming machining of tip lower surface size and flatness is performed, thereby machining with the standard wire electrode 23 is finished. Next, automatically with a program, or more partially by hand, condition of power supply at a pressurizing voltage is transferred from high speed machining such as rough machining condition to a given finishing machining condition, and is exchanged to a power supply between a slender wire electrode 24 and the object to be machined, running of the standard wire electrode 23 is stopped, and running at a given tension impression and speed of the slender wire electrode 24 is started.
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