Analysis Of Static And Dynamic Characteristics Of Ceramic Ball Grinding Machine And Optimization Of Key Components

With the development of modern society,ceramic materials have been widely used in aerospace,machinery,chemistry and other fields due to their low density,high hardness,heat resistance,corrosion resistance and other characteristics.Si3N4 ceramic material is used to produce ceramic ball in ceramic ball bearing.The production of high-precision ceramic ball requires a ceramic ball grinding machine with high machining accuracy and good machining performance.In order to produce a ceramic ball grinding machine,it is necessary to analyze and optimize the structure of the ceramic ball grinding machine.This paper analyzes the static and dynamic characteristics of the key components and the whole machine of the ceramic ball grinding machine tool.According to the results of static and dynamic characteristics analysis,the beam and the bed are determined as the optimization objects.The structure of the beam and the bed is optimized,and the static and dynamic characteristics and quality of the beam and the bed before and after optimization are compared.The research contents of this paper are as follows:(1)establish the 3d solid model of key components and the whole machine of the ceramic ball grinding machine,simplify the established 3d model according to certain rules,and import the simplified 3d model into ANSY Workbench software to add materials and mesh the key components and the whole machine model of the ceramic ball grinding machine.Complete the finite element model establishment of key components and machine.(2)the static and dynamic characteristics of the key components and the whole machine of the ceramic ball grinding machine are analyzed,the preparation work is done before the analysis,the pressure load on the key components and the whole machine is determined,the contact surface is processed during the analysis of the whole machine,and constraint conditions are imposed on the key components and the whole machine.The analysis results of static and dynamic characteristics include the deformation and stress nephogram of key components and the whole machine,the corresponding first-order modal matrix diagram and the first-order natural frequency,and the corresponding frequency response curve at the maximum deformation point.The key parts and the parts that need to be strengthened in the whole machine structure can be obtained from the analysis results.(3)orthogonal experimental design and multi-objective fuzzy optimization were used to optimize the size of the beam.The optimization design module based on ANSYSWorkbench was used to optimize the structural topology of the machine beam and bed respectively.After optimization,the static and dynamic characteristics of the beam and bed are improved and the mass is reduced.It is concluded that through the static and dynamic characteristics analysis and structure optimization of the ceramic ball grinding machine tool,the machining accuracy and performance of the machine tool are improved,and the machine tool is lightweight,which provides a theoretical basis for the application of ceramic ball grinding machine tool in practice.