| 摘要 |
PURPOSE:To prevent breakage or the like of a wire electrode for stable machining in a wire electric discharge machine by automatically varying under control machining conditions and others, when the flow rate or the fluid pressure of working fluid varies from a set value. CONSTITUTION:A working fluid flow rate and fluid pressure variation detecting and controlling device 30 enters detected values of flow rate and fluid pressure of working fluid from a flow meter 25 and a manometer 26 and respective set values from a working fluid flow rate and fluid pressure setting device 31, and when the detected values are varied from the set values, it transmits an output signal variable in response the variations. A machining power supply device 28 has its power controlled by the set values from the setting device 32 and the output signal from the control device 30, so that the machining conditions responsive to the variations are provided. In other words, in the electric discharge machine, when the control device 30 detects any variation above a set value of the device 31, the control device 30 transmits a signal variable in response to the variation to the power supply device 28, so that electric power controlled in response to the variation is supplied between the wire electrode and the workpiece. |
