Faom Peeling Machine includes a precise ball screw rod for rising & descending, a large knife driven wheel, a thick & precise blade guide that matches the knife auto feeding unit.. As the knife is worn out, the knife auto feeding unit is able to push the knife in automatically and fix the knife edge at the same position. Two sets of grinding stone units, which grinds the knife to keep it sharp, are specially designed: as the knife stops cutting, the grinding stones retract automatically to protect the knife edge from wearing out.