Angle-adjustable electrode elbow mechanism

The angle-adjustable electrode elbow mechanism comprises a fixed clamping plate, an electrode wire and a sector frame, wherein the fixed clamping plate is used for being fixed to electric spark machining equipment; the electrode wire is used for conducting electric discharge machining on a cavity small hole in a part cavity; and the sector frame is arranged in a sector shape, used for adjusting the machining angle of the electrode wire and penetrates into the part cavity. The circle center of the sector frame is connected with the fixed clamping plate, and the size of the sector angle of the sector frame is adjustable. The connecting end of the electrode wire is connected with a machine tool spindle of the electric spark machining equipment, and the opposite machining end of the electrode wire penetrates through the fixed clamping plate, then penetrates in from the first side of the sector frame in the circumferential arc direction of the sector frame and penetrates out from the opposite second side of the se