Wire electric discharge machine, correction device, and correction method

A correction method of correcting, by a correction device, position information indicative of a position of an upper side supporting point of an upper guide and a position of a lower side supporting point of a lower guide of a wire electric discharge machine configured to support a wire electrode,

• wherein the wire electric discharge machine comprises a support platform including a support surface configured to support an object to be measured including a measurement site, the support platform being arranged between the upper guide and the lower guide in a vertical direction of the support surface, and
• the correction device comprises one or more processors configured to execute computer-executable instruction in memory,
• the correction method comprising:
• storing, in the memory, the position information;
• controlling, by the correction device, the wire electric discharge machine and, in a state in which the wire electrode and the measurement site of the object to be measured which is supported on the support surface face toward each other in a direction of relative movement perpendicular to the vertical direction, positioning the upper guide closer to the measurement site than the lower guide in the direction of relative movement, and thereby causing the wire electrode to be inclined at a predetermined angle;
• controlling, by the correction device, the wire electric discharge machine and, by causing relative movement of the upper guide and the lower guide along the direction of relative movement from a state in which the lower guide and the measurement site are separated from each other by a predetermined distance in the direction of relative movement, measuring an amount of relative movement of the upper guide, the lower guide, and the wire electrode with respect to the measurement site, caused until the wire electrode which is inclined at the predetermined angle reaches the measurement site;
• and
• correcting, by the correction device, the position information stored in the memory, based on the predetermined angle and the amount of relative movement.