The material of the whole machine is 820mm conveyor belt, outer belt supporting roller, three pressure beams, a 5.5kW cutting motor, a 3kW chamfering (edge grinding) motor, 210 saw blade and 200 chamfering wheel. This equipment is specially designed for the inverted inner corner of large plate and sintered stone. It has the advantages of simple and convenient cutting operation, small floor area, low loss and good effect in debugging and application.