The product is suitable for grinding the straight line double edging of flat glass. Coarse grinding, fine grinding, polishing can be done at one time. Gliding of grinding head holder adopts double straight line rolling glide. Double ball screw rod transmission stabilizes moving speed and eliminates moving gap, reduces resistance and abrasion, and ensures repeated positioning. This product adopts PLC control system. Set parameters via interface and finish processing at one time. The transmission