CNC Bending machine is a common hydraulic bending machine with CNC operating system, is the upgrade of the common bending machine products, process changes frequently can reduce the Labor intensity of operators. However, the operator's operating skills than ordinary hydraulic bending machine. CNC Bending machine and hydraulic bending machine, the most characteristic is its CNC operating system, which is the upgrade of the ordinary bending machine, reduce the operator's labor and enhance the processing efficiency. But at the same time, the CNC bending machine operation requirements and operating skills are much higher than hydraulic bending machine, and relatively more complex. NC Bending machine has multi-step programming function, can realize multi-automatic operation, complete multi-step parts one-time processing. The hydraulic press-brake is powered by wire to coil, and then the power is powered to press plate, so as to clamp the thin plate between the press plate and the base. Because of the electromagnetic force clamping, the pressing plate can be made into a variety of workpiece requirements, and the workpiece with side wall can be processed. The hydraulic bending machine comprises a bracket, a working table and a clamping plate, and the working table is arranged on the bracket, and the working table is composed of a base and a clamping plate, the Coil is arranged in a depression of the seat Shell, and a cover plate is arranged on the top of the depression. When in use, the wire electrifies the coil, and after electrifying the pressing plate, the force is generated to the pressing plate, thereby realizing the clamping of the thin plate between the pressing plate and the base. Because of the electromagnetic force clamping, the pressing plate can be made into a variety of workpiece requirements, and the workpiece with side wall can be processed.