This machine is used to grind the hemline and two chamfering of flat glass.No.1～No.5 motors are set on the same beam,can move the angle between 0°～ 45°.it can be both operated by manual and by PLC(Programmable logic Controller) which can set the parameter in interface then start work automatically. It use felt wheel and cerium oxide to polish hemline which is as shiny as the surface of glass.It adopt the stepless motor adjust the speed,there are “quick” and “slow”two range of speed,can change speed smoothly in a big range,easy operation.Rough feed,fine feed and polishing can be completed by one time process.