The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2000
Filed:
Dec. 21, 1998
Cheng-Fu Tsai, Hsinchu, TW;
Hsi-Pin Li, Hsinchu, TW;
Jui-Fang Liang, Chang Hwa, TW;
Hsiang-Kuo Li, Chung Li, TW;
Abstract
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.