Guiding device of electric discharge machine for machining internal spline flange

The utility model discloses a guide device of an electric discharge machine for machining an internal spline flange, which comprises two supporting seats, supporting rods are fixedly arranged at the top ends of the supporting seats, guide strips are fixedly arranged at the top ends of the supporting rods, and two sides of the inner wall of a guide groove are rotatably connected with two sides of the outer wall of a lead screw respectively. The outer walls of the lead screws are in threaded connection with arrangement blocks, the outer walls of the arrangement blocks are connected with the inner walls of the guide grooves corresponding to the lead screws in position in a penetrating and inserting mode, electric telescopic rods are fixedly installed at the bottom ends of the arrangement blocks, and fixing blocks are fixedly arranged at the telescopic ends of the electric telescopic rods. And then a knob is rotated to drive a push plate, the push plate pushes a connecting column to drive the clamping rings to ge