Real-time online dressing device for superhard grinding wheel

The invention discloses a real-time online dressing device for a superhard grinding wheel, and relates to the technical field of machining, the real-time online dressing device for the superhard grinding wheel comprises a grinding wheel used for grinding the superhard grinding wheel, a grinding wheel rod assembly, a flange plate, an adjustable shaft I, an adjustable shaft II and a nut, positioning holes I are formed in the shaft middle part of the grinding wheel rod assembly from two ends to the middle part, and internal threads are arranged in the positioning holes I; positioning angle faces are arranged at positioning holes I in the two ends of the grinding wheel rod assembly, external threads matched with internal threads on the grinding wheel rod assembly are arranged outside the adjustable shaft I and the adjustable shaft II, and the adjustable shaft I sequentially penetrates through the center of the flange plate and the center of the grinding wheel and then is connected with the grinding wheel rod asse