Abstract: A control device, includes: a modification instruction receiving unit for receiving modification instructions for a control parameter and for machining program; a history storage unit for causing a storage unit to store a modification history for the control parameter and the machining program; an Undo/Redo processing unit for performing an Undo/Redo process based on the modification history; a determination unit for determining whether a prescribed condition has been met; and a history deletion control unit for deleting the change history stored in the storage unit when the determination unit has determined that the prescribed condition has been met.

Abstract: A wire electrical discharge machine acquires measured dimensions of a test workpiece that has been machined with a wire electrode inclined at a given angle with respect to a running direction in which the wire electrode runs; and calculates, based on the measured dimensions, first actual information indicating an actual holding position at which the wire electrode is actually held at a first die guide for guiding the wire electrode to a workpiece, and second actual information indicating an actual holding position at which the wire electrode is actually held at a second die guide for guiding the wire electrode sent from the workpiece, and, when necessary, the wire electrical discharge machine rewrites first information and second information stored in a storage unit to the calculated first actual information and second actual information.

Abstract: A wire electrical discharge machine acquires measured dimensions of a test workpiece that has been machined with a wire electrode inclined at a given angle with respect to a running direction in which the wire electrode runs; and calculates, based on the measured dimensions, first actual information indicating an actual holding position at which the wire electrode is actually held at a first die guide for guiding the wire electrode to a workpiece, and second actual information indicating an actual holding position at which the wire electrode is actually held at a second die guide for guiding the wire electrode sent from the workpiece, and, when necessary, the wire electrical discharge machine rewrites first information and second information stored in a storage unit to the calculated first actual information and second actual information.

Abstract: A control device for a wire electrical discharge machine includes: a storage unit configured to store a machining program that causes the wire electrical discharge machine to machine a workpiece with a wire electrode and image information showing a machining path along which the wire electrode moves relative to the workpiece according to the machining program, in association with each other; and a display unit configured to, when the machining program stored in the storage unit is selected, display the image information associated with the selected machining program.