Patent ID: 7906743
Filing Date: 2011-03-15
Classification: B23H,Y10T

Abstract:
1. A gradation twin-wire electrical discharge machining (EDM) manufacturing system, comprising: a manufacture machine, including a working area; a wire feeding bobbin set, pivotally coupled to the manufacture machine, and including an upper wire feeding bobbin and a lower wire feeding bobbin; a wire receiving bobbin set, pivotally coupled to the manufacture machine, and including an upper wire receiving bobbin and a lower wire receiving bobbin; a gradation electro-insulated roller, pivotally coupled to the manufacture machine, and corresponding to the working area, and the gradation electro-insulated roller including an upper insulation guide groove and a lower insulation guide groove, and the upper insulation guide groove and the lower insulation guide groove constituting a gradation form, and the upper insulation guide groove being away from the working area, and the lower insulation guide groove being proximate to the working area; a twin-wire conductor wire module, including an upper conductor wire and a lower conductor wire, and the upper conductor wire being wound at the upper wire feeding bobbin first, and then slid through the upper insulation guide groove, and wound at the upper wire receiving bobbin again, and the lower conductor wire being wound at the lower wire feeding bobbin first, and then slid through the lower insulation guide groove, and wound at the lower wire receiving bobbin again; and a discharge circuit set, including a transistor resistance and capacitance (RC) electro discharge circuit and a resistance and capacitance (RC) electro discharge circuit, and the transistor resistance and capacitance (RC) electro discharge circuit being electrically coupled to the upper conductor wire, and the resistance and capacitance (RC) electro discharge circuit being electrically coupled to the lower conductor wire.