Research On Optimization Method For Energy-saving Design Of Key Components Of Cnc Gear Hobbing Machine Tool

As the core equipment of the manufacturing industry,machine tools are numerous and consume huge energy,but their energy efficiency is extremely low.In response to the country's active call for energy conservation and emission reduction,research on energy conservation of machine tools is of great significance.At present,a large number of scholars have conducted research on energy saving and consumption reduction of CNC machine tools.Their main consideration is to optimize the process parameters of the machine tool processing operation process to improve the energy efficiency of the machine tool and reduce the energy consumption.This method can reduce the energy consumption of the machine tool to a certain extent,but it does not solve the energy consumption problem of the CNC machine tool from the root cause,which restricts the improvement of the energy efficiency of the machine tool.Starting from the design stage,improving the energy efficiency of the machine tool and reducing the energy consumption are extremely important for the further energy-saving optimization of the machine tool.Therefore,this article takes a wide range of CNC gear hobbing machine tools as the research object,starting from the machine design stage,proposes an optimized energysaving design method for CNC gear hobbing machine tools,and realizes the energy efficiency improvement of CNC gear hobbing machine tools,thereby realizing energy saving.First,taking the YS3118 CNC high-speed dry cutting CNC gear hobbing machine developed by a machine tool group in Chongqing as an example,the working principle,structural characteristics and energy consumption characteristics of the CNC gear hobbing machine are analyzed,and the energy consumption model and energy consumption of the CNC gear hobbing machine are constructed from the perspective of energy consumption characteristics.Energy efficiency equation,and then analyze the optimization energy-saving mechanism of the column parts,tool holder parts and drive unit of the hobbing machine tool.Secondly,taking the column components of CNC gear hobbing machine tools as the research object,combined with the idea of lightweight,the column components are optimized for energy saving.The energy-saving optimization design process of the column components is proposed.On this basis,the optimization variables and objectives of the column components are determined.The column component optimization model is established by comprehensively using the central composite experimental design method and the second-order response surface regression model,and is carried out by using the adaptive genetic algorithm.The model is solved,and the optimized structural parameters of the column components are obtained.Then,in view of the complex structure,high energy consumption and low efficiency of machining parts of CNC gear hobbing machine tools,the tool holder components and drive units are taken as the research objects,and the energy-saving integrated optimization design method of CNC gear hobbing machine tool holder components and drive units is proposed.The energy consumption model of the tool holder components and driving unit of the gear hobbing machine tool was established,and the tool position point displacement data of the machine tool was obtained by the rigid-flexible coupling method of ANSYS Workbench,and then the accuracy of the RSM,RBF,and Kriging proxy models was compared and established to establish the structure parameters of the tool holder support plate and its The accurate mapping relationship between the quality and the displacement of the tool position point is established,and the comprehensive optimization function model of the gear hobbing machine tool with the motor parameters and the structural parameters of the tool holder support plate as variables is established.Finally,the MOPSO algorithm is used to solve the model.Finally,simulation experiments are used to verify the optimization method proposed in this paper.First,a comparative analysis of the dynamic and static performance of the column components before and after optimization is carried out.The results show that the static and dynamic performance of the column components of the CNC gear hobbing machine tool has been improved while the energy consumption is reduced.Then perform performance simulation analysis on the tool holder components and drive unit of the CNC gear hobbing machine tool.First,the finite element analysis software is used to calculate the tool position point displacement before and after the optimization,and then the sensitivity analysis and response surface analysis of the design variables are performed,and the design parameters are summarized.The influence law of energy consumption and tool position point displacement.