The Processing Mechanical Parameters Confirmation And The Design And Optimization Of Key Parts For A Large Spinnig Machine

Wheel spinning machines are the basic tools for the manufacturing of high-strength, light-weight aluminum wheels. Research on spinning machines has been launched for a long period in foreign countries. Currently, a few developed countries grasped its key technologies. Moreover, its high import price and long delivery cycle are also impeded its promotion and application in domestic enterprises. Therefore, it is of great strategic significance on industrial upgrading to individually develop wheel spinning machines with independent intellectual property rights. This thesis is based on the project of independently developing spinning machines launched by Zhejiang University and the famous wheel manufacturer. Its main content includes:1) Based on definite spinning parameters, by adopting rigid-plastic finite element method and dynamic explicit algorithm the finite element model of spinning process was established and the first step of the spinning process was simulated, from which the forming conditions, stress distribution and mechanical parameters were obtained. The results are the foundation for the following design and optimization.2) By referring to the design ideas of import products, the function modules overall layout of spinning machines were determined. The detailed design scheme of the key components, such as spindle driving system, gear box and tailstock, were accomplished and a new type of tool turret for spinning machines was proposed. Finally, the3D assembly model of the whole spinning machine was achieved in UG NX.3) Based on topology optimization, layout optimization method for reinforcing ribs on horizontal spinning machine tool body was presented. After determining design space and working load, based on SIMP method and the topology multi-objective optimization model of the machine body structure was set up; Furthermore, by taking into account of manufacturability, the optimal layout of the plant-shell welding reinforcing ribs was obtained. By comparing to the original design, both the static and dynamic performances was greatly improved.