精密立式磨床天然大理石床身测试分析与优化设计

Structural optimization design and analysis of test analysis and optimization design of natural marble bed for precision vertical grinding machine

摘要: 为了解决铸铁床身性能已接近材料极限的问题，文章针对某型号精密立式磨床天然大理石床身进行了研究。首先介绍了某型号精密立式磨床基本结构，采用有限元方法对天然大理石床身进行了模态仿真分析；然后进行了床身振动测试验证了仿真模型的正确性；最后基于ANSYS拓扑优化模块开展了天然大理石床身结构优化设计。结果表明：天然大理石床身总变形量、等效应力、质量分别降低了23.8%、15.07%、1.01%，证明了天然大理石作为磨床床身材料的可行性及其性能优越性。

Abstract: In order to solve the problem that the performance of cast iron bed is close to the material limit, the natural marble bed of a precision vertical grinding machine is studied in this paper. Firstly, the basic structure of precision vertical grinding machine is introduced, and the modal simulation of natural marble bed structure is carried out by finite element method. Then the vibration test of the bed is carried out to verify the correctness of the simulation model. Finally, the structure optimization design of natural marble bed is carried out based on ANSYS topology optimization module. The results show that the total deformation, the equivalent stress, the mass of natural marble bed are reduced by 23.8%, 15.07%, 1.01% respectively, which proves the feasibility and superiority of natural marble as a grinding machine bed material.