Novel high-precision binder roller grinding wheel

The utility model relates to a novel high-precision binder roller grinding wheel which comprises a grinding wheel body, a water guide mechanism is arranged on the inner side of the grinding wheel body, the water guide mechanism comprises a water retaining ring and a water guide channel, the water guide channel is formed in the side face of the grinding wheel body, and the water retaining ring is fixedly arranged in the middle of the grinding wheel body. A through hole corresponding to the position of the water guide channel is formed in the edge of the water retaining ring, and the through hole is communicated with the water guide channel. After water is sprayed to the water retaining ring through the water supply head and collected by the water retaining ring, water enters the water guide channel through the through hole, at the moment, due to high-speed rotation of the grinding wheel body, water in the water guide channel diffuses towards the periphery of the grinding wheel body under the inertia effect and