Wire electric discharge machine

A wire electric discharge machine configured from a plurality of machine elements, and performing electric discharge machining on a workpiece in a state in which an upper guide and a lower guide are disposed at predetermined relative positions, by causing the workpiece and a wire electrode installed between the upper guide and the lower guide to relatively move, the wire electric discharge machine comprising:

• a temperature detection means for detecting temperature of the machine element;
• a position measurement means for measuring an actual value for relative positions of the upper guide and the lower guide;
• a storage means for storing a temperature detected by the temperature detection means and an actual value for the relative position measured by the position measurement means to be associated with each other as associated data;
• a relational expression calculation means for inferring and calculating a relational expression between the temperature of the machine element and the relative position by way of machine learning with the associated data stored in the storage means as training data;
• a position estimation means for calculating an estimated value for the relative position by substituting the temperature detected by the temperature detection means into the relational expression calculated by the relational expression calculation means;
• a correction amount calculation means for calculating a correction amount for the upper guide and the lower guide, based on the estimated value for the relative position calculated by the position estimation means;
• and
• a correction execution means for performing correction of the relative positions of the upper guide and the lower guide, based on the correction amount calculated by the correction amount calculation means.