| The development of large forging equipment has always been a challenge for manufacturers and users.The successful combination of mechanical,electrical,hydraulic components and related processes of the forging equipment is the essential foundation for the development of radial forging equipment.Because of this forming technology has many advantages,especially in the special forging materials,such as high alloy steel and super alloy,has a prominent advantage in the production of key parts on the engineering application,it has high accuracy in dimensional tolerances and material utilization rate of rod and pipe processing.So when the tecthnology has emergency it has a rapid development.With the increasing demand for the application of large tonnage full hydraulic radial forging machine,but the domestic models are only in the stage of research and development.Therefore,it is of great significance to handle the tecthnology of this full hydraulic radial forging machine as soon as possible.The main hydraulic servo system of radial forging machine has the characteristics of high pressure,large flow rate,high forging frequency and complex load.These factors determine the importance of the key components in the system.In this paper,the hydraulic servo system of the radial forging machine as the carrier,and using the research methods of combinating theoretical analysis and numerical calculation to ansys static and dynamic characteristics of the radial forging machine’s hydraulic servo control system,analysis of the impact of key design parameters on the static and dynamic characteristics of the forging cylinder,to provide a theoretical reference for the prototype the design,the main contents as follows:(1)The MATLAB/Simulink is used to analyze the hydraulic servo system of the main cylinder machine.The mathematical model of a pilot valve control symmetrical cylinder is established,respectively set up linear and nonlinear time domain model using the classical control theory,through the analysis of the internal relations of the model,find the influence of the static and dynamic characteristics of the key factors.(2)Describes the composition and working principle of the host size forging machine of hydraulic servo system,the control performance and control accuracy of the hydraulic servo system as the goal,according to the product sample structure and parameters based on the AMESim software of key components of the hydraulic servo system of the host and the host hydraulic servo control system modeling and simulation;Establish the host hydraulic servo control system,through the batchoperation,studied the influence of the key parameters of the system under different control strategies under the static and dynamic characteristics of the system,and puts forward the host hydraulic servo control methods and ideas for the key parameters of system,design and manufacture,provide a reference for the design of position control accuracy of hammer radial forging machine hydraulic servo system and master cylinder mechanism optimization.(3)The numerical analysis on the main cylinder flow through physical field simulation software COMSOL,the establishment of the main cylinder fluid solid coupling field calculation model,analyzes the flow state of the master cylinder internal flow,by setting the key structure parameters,comparing the effect on the master cylinder’s motion state,and further optimize the structure of the main cylinder.(4)Build the main cylinder hydraulic servo system model experimental platform.Based on the similarity model principle,according to the dynamic and static similarity rule of the system,we design the size and structure of the experimental model,and introduce the working principle,experimental conditions and test methods of the experimental platform. |
