立轴式机床铣夹具有限元拓扑优化分析  

Topological Optimization of Milling Fixture for Vertical Spindle Machine Tool

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作  者:李灿丽 刘祖国[2] 舒成松 余朝静 卢泽[2] 张大斌[2] 曹阳[2] Li Canli1,Liu Zuguo2,Shu Chengsong2,Yu Chaojing2,Lu Ze2,Zhang Dabin2,Cao Yang2(1.Engineering Training Center,Guizhou University,Guiyang,Guizhou 550025,China;2.School of Mechanical Engineering,Guizhou University,Guiyang,Guizhou 550025,China)

机构地区:[1]贵州大学工程训练中心,贵州贵阳550025 [2]贵州大学机械工程学院,贵州贵阳550025

出  处:《湖北工程学院学报》2018年第3期88-93,共6页JOURNAL OF XIAOGAN UNIVERSITY

基  金:贵州省科技支撑计划项目[黔科合支撑(2016)2038]; 贵州大学机械工程“技术众筹”研究生创新基地项目[贵大研CXJD(2015)003];贵州大学本科教学工程项目(SJJG201504)

摘  要:铣夹具是立轴式机床系统中的关键部件,为了提高立轴式机床的工作性能,降低加工过程中的误差且便于装卸。采用Solidworks建立了立轴式机床铣夹具的三维模型,利用ANSYS对立轴式机床铣夹具的静、动态性能进行分析,确定夹具各个路径变形量的变化曲线,得到夹具变形云图和模态振型较大的云图,结合第四强度理论对立轴式机床夹具进行校核。在满足强度前提下,利用有限元Beta对夹具进行负载工况下的拓扑优化,确定了优化后的夹具模型。结果表明:优化后各个路径变形量明显下降且质量下降了12.7%,节约了生产材料,能快速的实现夹具的安装,为立轴式机床铣夹的结构优化提供参考。Milling fixture is the key component in the vertical axis machine tool system.In order to improve the working performance of vertical axis machine tools and reduce the error in the processing process and make it easy to load and unload,Solidworks is used to establish the three-dimensional model of the vertical spindle milling fixture,and the static and dynamic performance of the milling fixture is analyzed by Ansys.The deformation curve of each path of fixture is determined,the deformation nephogram and the large modal shape are obtained,and the fourth axis strength theory is used to check the fixture of opposite axis.Under the condition of satisfying the strength,the topology optimization of the fixture is carried out by using the finite element Beta and the optimized fixture model is determined.The results show that the deformation of each path is decreased and the quality is decreased by 12.7% so that the production material is saved,and the fixture installation can be carried on quickly,which might provide reference for the structural optimization of milling fixture of vertical spindle machine tool.

关 键 词:立轴式机床 夹具 静态分析 拓扑优化 

分 类 号:TP391.9[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术]

 

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