The machine design to grind the straight line and the 45 degree edge of flat glass. The machine has two functions, it can grind the 45 degree edge which can realize the rough & fine grinding and polishing at one time. Its convey driver adopts the stepless regulator to extend the adjustment range. It has front and back big beam, the machine bottom base adopts the iron steel materials. The machine is working stable, easy operation and convenience, it can be equipped with the PLC per customer’s needed.