| 摘要 |
PROBLEM TO BE SOLVED: To provide a fine hole discharge processing method and apparatus which cause no contamination of peripheries with dispersion of a processing liquid, need no specification of an electrode rise position for each processed hole even if electrode wear rates are different, and are capable of shortening the time by a next processing start when en electrode rises up to a processing start position after processing completes in thick plate hole processing.SOLUTION: A fine hole discharge processing machine 1, provided with a pipe or rodlike electrode 27 to be capable of elevation positioning and rotation driving on the electrode, is a fine hole discharge processing apparatus characterized by providing an electrode guide device 33 comprising an electrode guide 29 that guides the electrode and a sensor 31 that senses the tip of the electrode in a close vicinity above the electrode guide, and by providing the electrode guide device to be capable of elevation positioning to a predetermined position facing a workpiece W to stop a rise of the electrode at the point of time when the tip of the electrode is sensed by the sensor on the way of raising the electrode up to the origin (Z=0) after discharge processing completes.SELECTED DRAWING: Figure 1 |
