Importance

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Abstract

A wire electric discharge machine includes a wire electrode deflection detecting unit detecting a deflection of a fed wire electrode at the time of a wire automatic wire connection, a wire feeding unit feeding the wire electrode after the wire electrode deflection detecting unit detects the deflection of the wire electrode, a clocking unit clocking a time taken after the deflection of the wire electrode is detected, a determining unit determining whether the wire electrode deflection detecting unit detects the deflection of the wire electrode after the time clocked by the clocking unit exceeds a predetermined time, and a unit executing a retry operation of the automatic wire connection to rewind the wire electrode in a case where the determining unit detects the deflection of the wire electrode and continuing to feed the wire electrode in a case where the deflection of the wire electrode is not detected.

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First Claim