Control System Research of Square Steel Tube Straightening Machine

The article expounds the square steel tube straightening machine which is given priority to with PLC (Siemens S7-200) of the control system use testing car`s sensor to test square steel tube`s bending. Then, according to the curve`s size and location of the peaks and troughs of the curvature degree of square steel tube straightening machine control correct device again find square steel tube`s position of the peaks and troughs, and the peaks and troughs in the use of hydraulic cylinder for the opposite direction of compression. The hydraulic cylinder travel sizes are set to peak and trough values and tests again, until they meet the requirements. This control system can meet the control demands of square steel tube straightening machine, reflected the applicability, convenience, safety and reliability.