Grinding wheel flatness detection device

The utility model belongs to the technical field of grinding wheel quality detection devices, and particularly relates to a grinding wheel flatness detection device which comprises a base, a supporting seat which is connected to the base and can rotate freely, and a detection mechanism which is connected to the base and is used for detecting the flatness of a grinding wheel placed on the supporting seat. The detection mechanism comprises a stand column which is detachably connected to the base and is coaxial with the grinding wheel placed on the supporting seat, a supporting rod which is vertically connected to the stand column, a plurality of bending rods which are connected to the supporting rod and can move up and down relative to the supporting rod, and a display board which is vertically connected to the base. One end of the bending rod abuts against the grinding wheel, the other end of the bending rod is provided with a writing pen, and when the bending rod moves up and down, the writing pen draws measu