The utility model discloses a cooling device of a
grinding machine, which comprises a cooling device body, the cooling device body is mounted on the outer side of a
grinding tank, a mounting disc is fixedly mounted at the end part of the
grinding tank, meanwhile, a main shaft mounting hole is formed in the end part of the grinding tank, and the main shaft mounting hole is matched with a driving main shaft of the grinding
machine in size. The cooling device body comprises a cooling jacket, and spoilers are fixedly mounted on the inner wall of the cooling jacket. According to the cooling device of the grinding
machine, fluid impacts the interiors of the spoilers in the cooling jacket, so that the fluid rotates in the cooling jacket, the circulation path of the fluid in the cooling jacket is increased, the
retention time of cooling liquid in the cooling jacket is prolonged, more sufficient
heat transfer can be conducted between the cooling liquid and the cylinder wall, and the
cooling efficiency is improved. Therefore, heat generated in the
grinding process is taken away more effectively, the temperature of the grinding cylinder is more uniform and stable, and the influence of local overheating on the grinding quality is avoided.