The machine performs bottom edge grinding/polishing on flat glass, with arris polishing. Conveyor adopts chain transmitting system consisting of special stretchy rubber pad. Front rail can be moved in parallel to adapt to different glass thickness. Working speed is adjustable through speed regulator. The arris spindles adopt drag plates structure, no vibration in working. This machine is easy to operate and has good performance. The last wheel can be a independent felt polishing wheel or rubber wheel.