Wire electric discharge machine and wire electric discharge machining method capable of correcting connection hole position

A wire electric discharge machine configured to perform a program operation in accordance with a machining program, comprising machining path creation unit for creating a machining path based on an axis movement command of the machining program and wire electrode connection unit for connecting a wire electrode based on a wire electrode connection command of the machining program, and configured to relatively move the wire electrode and a workpiece along the machining path to perform machining, the wire electric discharge machine comprising:

• program operation interruption unit configured to interrupt the program operation if a connection hole for connecting the wire electrode is located in a position deviated from a wire electrode connection position on the machining path so that the connection by the wire electrode connection unit is not completed;
• wire electrode connection position storage unit configured to store the wire electrode connection position;
• wire electrode position comparing unit configured to compare the position of the connected wire electrode and the wire electrode connection position stored by the wire electrode connection position storage unit after the wire electrode is manually moved to the position of the connection hole by an operator, the wire electrode is manually connected in the position of the connection hole, and a re-machining operation is performed;
• wire electrode connection position return machining unit configured to perform machining such that the wire electrode is returned to the wire electrode connection position if the positions compared by the wire electrode position comparing unit are not coincident;
• and
• program operation restart unit configured to restart the program operation after the wire electrode is returned to the wire electrode connection position,
• wherein the program operation is performed along the machining path.