Polishing and cleaning compound device

A polishing and cleaning compound system constituted of at least a polishing device unit for polishing a thin disc-shaped work piece, a cleaning device unit arranged in series to said polishing device and for cleaning said work piece polished by said polishing device unit and a transporting means for transporting said work piece from a container in which a plurality of said work pieces are installed to said polishing device unit and said cleaning device unit in turn, characterized in that:

• said polishing device unit comprises at least:
• a pair of cylindrical polishing tools, each of which has a polishing cloth;
• at least one roller for rotation which is arranged above said cylindrical polishing tools, which limits an upper position of said work piece and which makes said work piece rotate in its axis;
• a first holding means for vertically gripping and holding said work piece transported from said container in which the plurality of said work pieces are installed in turn;
• and
• a polishing means for making said work piece held by said first holding means rotate in its axis by said roller for rotation and for making the pair of said cylindrical polishing tools rotate so as to pull said work piece up.