Industrial Technology Research Institute

Hsiang-Kuo Li

Jui-Fang Liang

Hsi-Pin Li

Cheng-Fu Tsai

A wire electric-discharge machining apparatus with recycled electric power is provided, which can recycle the energy stored in the inductor of the discharge circuit to be used as the power source to both the ignition circuit and the discharging circuit, so that the use of electric power is more cost-effective. The wire electric-discharge machining apparatus is of the type having a positive-voltage ignition circuit, a negative-voltage ignition circuit, a discharging circuit, and a snubber circuit. The improvement to the wire electric-discharge machining apparatus comprises: a first voltage converting circuit coupled between the snubber circuit and the positive-voltage ignition circuit; a second voltage converting circuit coupled between the snubber circuit and the negative-voltage ignition circuit; and a third voltage converting circuit coupled between the snubber circuit and the discharging circuit. This foregoing wire electric-discharge machining apparatus is capable of recycling the excessive energy that is intended to be drained out in the prior art into reused power to the ignition circuit and discharging circuit. As a result, the wire electric-discharge machining apparatus not only can help save power consumption and thus electricity cost, but also can help prevent the excessive energy to cause damage to the internal circuitry of the wire electric-discharge machining apparatus.

Growing community of inventors

Chung Li, Taiwan

Hsiang-Kuo Li