This machine changes the intrinsic grinding machine structure. Its body and ground plank are an integral whole. So when fixing, it can be lowered on to a basal plane once only. Using biserial roller axletree with centripetal spherical support of the host axletree can reduce energy consumption by 30.The intrinsic grille pattern forced discharging is substituted by the overfall pattern controlling one. This can improve the milled granularity and the capacity can be increased by 15-20.