Design And Simulation Research Of The Dynamic Characteristics Of Hydraulic Press Down System For The Tube Mill

The press down device is one of the key equipment of the tube mill, its design and manufacture level directly influences the end product quality of seamless steel pipe and the benefit of production enterprise. At present the electric screw down gear is mostly used in the tube rolling train that is widely applied in home. With electric screw down gear comparing, the hydraulic press down system has its incomparable superiority. Because the domestic studies on this aspect are late, only the tube mills from oversea that are adopted in the minority major corporations such as Bao Steel Corporation,Tianjin Steel pipe Company and so on useing the hydraulic press down system, which has represented now most recent development level of the technological design and manufacture of the tube rolling train. It is very necessary to design and manufacture the homemade tube rolling train with hydraulic press down system, in order to break the monopoly of overseas enterprise and enhance our country competitive power internationally in the design and manufacture of the tube rolling train aspect. Therefore carries on the research of the hydraulic servo press down of the tube mill has offered the important theory and practical significance.A set of hydraulic servo press down system is designed to carry on the position control of the tube rolling-mill roller in this paper. This system includes the part of hydraulic pumping station and the servo depress. The design of the hydraulic pumping station includes the design of the hydraulic station schematic diagram and the lectotype and parameter establishment of each key element. The part of servo depress mainly includes the design of the schematic diagram of the hydraulic servo depress and the computation lectotype of servo valve.The simulation model of the entire press down system is established after the simulation model of each hydraulic element being constructed using the unique basic element modeling in AMESim. After simulation analysis, the satisfactory control performance is obtained by using the PID controller to carry on adjustment that is commonly used in the industry. Finally the simulation model under the MATLAB/Simulink environment is designed using AMESim and MATLAB union simulation connection. The real-time simulation test platform in dSPACE and the test monitoring picture under the ControlDesk environment of the hydraulic servo press down system of the tube rolling-mill is designed using the seamless connection of the dSPACE real-time simulation system and the MATLAB software. The very well foundation is provided for the further thorough research of the characteristics of this press down system and the application of each kind of advanced control algorithm in this press down system...