These series of straight beveling machine are used for grinding bevel and bottom side of glass in different size and thickness. Rough grinding, fine grinding, polishing of bevel and grinding of bottom side can be completed in one processing travel. It is easy for feeding of grinding spindle in the all and the one and beveling angle adjusting while the thickness of glass being changed. Processing can be continuous for glass sheet of the same thickness. The shininess of finished surface will be almost the same as glass itself.