Angle-adjustable cathode device for electrolytic machining of ruled surface blade and using method of angle-adjustable cathode device

The invention relates to an angle-adjustable cathode device for electrolytic machining of ruled surface blades and a using method of the angle-adjustable cathode device. The problems that in the prior art, a cathode is complex in type, single in purpose and uneven in flow field are solved. According to the technical scheme, the device comprises a fixing frame, and a welding sleeve, a metal clamping plate and a fixing pile are arranged in the fixing frame; the metal clamping plate comprises an upper metal clamping plate and a lower metal clamping plate which are provided with hollow cavities; a liquid inlet and a liquid outlet are formed in the upper metal clamping plate and the lower metal clamping plate; brackets are arranged at the two liquid outlets; one ends of the upper metal clamping plate and the lower metal clamping plate are movably connected through bolts, springs are fixedly arranged on the inner side faces of the two metal clamping plates respectively, and the other ends of the two springs are wel