混杂纤维增强树脂混凝土精密磨床床身综合特性分析OA

In order to conduct in-depth research and explore new ways to improve the comprehensive performance of machine tools and meet the development needs of modern machine tools towards high-accuracy,high intelligence,high speed,and other directions,it is proposed to replace cast iron material with steel-polypropylene fiber reinforced resin concrete(SPFRRC)material for the grinding machine bed.By comprehensively applying the"HORSFIELD densest filling theory","Bailey method",and"drainage method"to determine the optimal gradation,particle size distribution,and minimum porosity of aggregates,the mechanical properties of SPFRRC materials are further optimized.Specimens with good forming effects are prepared and their basic performance parameters are tested.Taking the cast iron material grinding machine bed as a comparison prototype,the structure of the SPFRRC material grinding machine bed is redesigned.SolidWorks and ANSYS Workbench software are used for collaborative simulation to conduct three-dimensional modeling and finite element static,dynamic,and thermal performance simulation of the two types of material grinding machine beds.The comprehensive performance and lightweight of the cast iron material and SPFRRC material grinding machine beds are analyzed and calculated.The research results are as follows:compared with the cast iron material grinding machine bed,the SPFRRC material grinding machine bed reduces the mass by 35.9%;in terms of static performance,the maximum deformation is reduced by 28.33%,and the maximum stress is reduced by 68.77%;in terms of dynamic performance,the first six modal frequencies all increase in different proportions;the maximum vibration responses in the X-axis,Y-axis,and Z-axis directions are reduced by 81.17%,84.23%,and 55.42%,respectively;in terms of thermal performance,the maximum thermal deformation and thermal stress are reduced by 14.62%and 60.41%,respectively.The following conclusions can be drawn from the above research results:SPFRRC material has the advantages and characteristics of significantly improving the comprehensive performance of the grinder bed,including static,dynamic,and thermal properties,while ensuring the reduction of the quality of the grinder bed,and can effectively achieve green manufacturing and low-carbon emissions.