| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric discharge machining method for making a pore on a shape machining part using a pipe electrode capable of reducing cost of a machining electrode, eliminating need of replacement of the machining electrode while one product is manufactured, and reducing total machining time, and also to provide a device used for the same. SOLUTION: The electric discharge machining method uses the pipe electrode in water, relatively position-controls a three-dimensional position in the XYZ-axis direction of the electrode and a workpiece under control of a control device, and carries out shaped hole machining on the different cross-sectional shape part of the workpiece. Whether a space between the electrode and the workpiece is in a non-electric discharge state or an electric discharge state is determined during electric discharge machining along a shape machining path in which the electrode is programmed. When it is in the electric discharge state, automatic correction of cutting amount in a Z-axis direction considering electrode consumption amount is carried out to the programmed electric discharge machining path, and when it is in the non-electric discharge state, the automatic correction of the cutting amount in the Z-axis direction considering the electrode consumption amount is not carried out to the programmed electric discharge machining path. COPYRIGHT: (C)2011,JPO&INPIT
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