Research On The Clamping Device Of Trackless Loading And Unloading Machine

In the free forging process,the trackless loading and unloading machine mainly completes the loading and unloading of the workpiece,and is an important auxiliary equipment of the emancipated forging hydraulic unit.This paper studies the working state of the clamping device of the trackless loading and unloading machine,and establishes a mechanical analysis The model analyzes the factors that affect the clamping device,studies the design ideas of the clamping mechanism of the trackless loading and unloading machine,and determines the design method of the near constant force clamping device,which provides a reference for the design of the clamping device of the trackless loading and unloading machine.By studying the typical application conditions of the clamping mechanism of the trackless loading and unloading machine,the influence of the clamped workpiece on the clamping force of the clamping device in the horizontal state and the inclined state is analyzed,and the output clamping force of the clamp arm and the clamped are determined The relationship between the clamping position on the workpiece,the factors that affect the clamping force output of the clamping device are studied,the working conditions that the clamping device should meet are determined,and the necessity of a constant output clamping force of the clamping mechanism of the trackless discharge machine is clarified.The structural characteristics of the clamping device of the trackless loading and unloading machine and the stress state of the rod are analyzed,and the force transmission ratio of the clamping device is studied to determine the relationship between the force transmission ratio and the clamping force when the clamping device clamps workpieces of different diameters.According to the clamping conditions and technical requirements of the trackless loading and unloading machine,the key parameters and determination methods of the clamping device were analyzed,and the design method of the clamping mechanism was analyzed by the analytical method to determine the design method of the near-constant force output clamping device.Aiming at the problem of solving the clamping mechanism design,the idea of solving the parameters of the clamping mechanism based on SolidWorks is studied,and the method of solving the parameters of the clamping mechanism based on SolidWorks is determined.According to the research ideas of the clamping device of the trackless loading and unloading machine,taking the design of the clamping device of the 30 kn trackless loading and unloading machine as an example,the rationality of the design method of the constant force output clamping mechanism is verified.The change trend of friction factor between materials at different temperatures is analyzed,the influence of the convex tooth structure on the friction factor between the jaws and the workpiece is studied,the material and designscheme of the jaw structure are determined,and the jaw model is established to improve The contact state of the jaws and the workpiece determines the method for improving the clamping stability.The key parameters that affect the strength and stiffness performance of the clamping arm of the clamping mechanism are studied.The structural design of the main components of the clamping device is performed.Based on the ANSYS software,the static parts of the clamping device are statically simulated and tested to verify the correctness of the design scheme.Analyze and compare the structural characteristics and stress state of the two clamping methods,and determine the selection basis of the structure of the clamping device of the unloading and discharging machine,which provides a reference for the theoretical research and structural design of the clamping device of the trackless and discharging machine.