发明名称 |
Wire electric discharge machine capable of detecting machining state |
摘要 |
<p>A voltage is applied to a machining gap between a wire electrode and a workpiece for a period of one microsecond or less with a quiescent time longer than the duration of voltage application between each two adjacent cycles of voltage application provided, and the number of duty cycles and a machining-gap voltage are detected. An open-circuit state in which electric discharge does not occur after the voltage is applied is identified by the detected machining-gap voltage, and the number of open-circuits is counted. An average machining-gap voltage is obtained based on the numbers of duty cycles and open-circuits and the supply voltage or an average voltage for each duty cycle.</p> |
申请公布号 |
EP2505293(B1) |
申请公布日期 |
2015.11.25 |
申请号 |
EP20120172865 |
申请日期 |
2011.06.01 |
申请人 |
FANUC CORPORATION |
发明人 |
KAWAHARA, AKIYOSHI;MURAI, MASAO;FURUTA, TOMOYUKI |
分类号 |
B23H7/18 |
主分类号 |
B23H7/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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