| 摘要 |
PURPOSE:To make a device continue its operation without wire disconnection or a short circuit phenomenon, by controlling a rise in machining solution pressure and feed at a time when travel for a return to the disconnection position comes to a specified value after the wire electrode snapped in the midway of machining is repaired at a machining start position. CONSTITUTION:When disconnection of a wire electrode 1 is repaired at a machining start position and reset up to the disconnection position passing through a machining groove 3, a control unit 8 transmits such a command as being turned to low pressure P1 to a machining solution feed unit 9 and feeds a machining solution 7, then at that point that travel of the wire electrode 1 toward the disconnection position before its resetting comes to a specified value, the control unit 8 transmits another command becoming high pressure P2 to the unit 9 in advance so that even if there is some delay in a pressure rise, the electrode 1 is reset to the disconnection position, and at that point of making a machining power source, the machining solution of the pressure P2 is fed out of injection nozzles 5 and 6, thus machining is smoothly continuable. |
