| 摘要 |
This invention provides a working liquid detecting apparatus for wire-cut electric discharge machines, capable of detecting by a single detector both a specific resistance value and a level of a working liquid. In a wire-cut electric discharge machine having a working liquid supply tank (1), an electrode (21) set in a position, in which the electrode can be immersed in a working liquid, in the working liquid tank (1) constitutes a working liquid detector (2), and at least a part of at least one electrode member of the electrode (21) constituting the working liquid detector (1) is set at a detection level of the working liquid, whereby the detection of the liquid level in the electrode-set position is carried out. At least a part of the electrode (21) is immersed in the working liquid, and electric current is detected through the working liquid, whereby the detection of a specific resistance value of the working liquid in the vicinity of the electrode is carried out.
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