Abstract: Aiming at the problem that uneven discharge occurs when multiple workpieces are processed simultaneously by conventional wire electricaldischarge machining（WEDM）, resulting in inconsistent processing groove width, a doublestation timesharing complementary WEDM method was proposed, which could make full use of the time of pulse gap and adopt a multiple pulse timesharing complementary power supply processing method, thus effectively avoiding mutual interference between workpieces in the processing process. In the process test, a molybdenum wire with a diameter of 0.18 mm was used as a tool wire electrode, and a die steel having a thickness of 8 mm was used as a workpiece material. The influence of machining voltage, wire speed, power frequency, feed rate and pulse gap multiple on machining groove width was explored. The consistency of the width of the doublestation processing slot under the mode of singlechannel power supply and timesharing complementary power supply was analyzed and compared. The results show that the groove width uniformity of the doublestation workpiece is better at the same time by the timesharing complementary electric discharge wire cutting method.After optimization, the consistency is best under the conditions of machining voltage of 70 V, pulse gap multiple of 5, feed rate of 20 μm/s, power frequency of 14 kHz and wire frequency of 35 Hz.
Key words: wire electricaldischarge machining（WEDM）; timesharing complementary pulse power supply; doublestation; slotting