Full-automatic coarse and fine polishing machine

The invention relates to a polishing technology, in particular to a full-automatic coarse and fine polishing machine which comprises a machine box, a material conveying mechanism arranged in the machine box, a rotating shaft arranged in the center of the material conveying mechanism, a grinding wheel fixed to the rotating shaft and a transmission mechanism arranged close to the material conveying mechanism. Through mutual cooperation of the transmission mechanism, the material conveying mechanism, the rotating shaft and the grinding wheel, the multiple tubular workpieces can rotate while being driven by the material conveying mechanism at a time to be conveyed, and then the surfaces of the multiple rotating tubular workpieces are evenly polished through the grinding wheel; the full-automatic rough and fine polishing machine can be ensured to carry out automatic rough and fine polishing and can also carry out rough and fine polishing on a plurality of tubular workpieces at the same time, so that the working ef