模具技术Issue(6)：48-53,6.
基于遗传算法的超声电火花微小孔加工用柔性铰链的数值分析与优化
Numerical analysis and optimization of ultrasonic EDM micro-hole machining based on flexible hinge and Genetic algorithm
摘要
Abstract
Ultrasonic edge cutting electrods EDM machining is an advanced method for machining micro deep holes.However,the electrode will produce a disturbance in high-frequency vibration,namely transverse vibration,which increases the roundness error of the machined holes.Based on this,a double straight circular flexible hinge structure is designed in this paper,which can effectively suppress the amplitude of transverse vibration while improving the axial vibration,so as to improve the machining accuracy.Firstly,the force model of flexure hinge is established,and the main parameters affecting its working effect are determined.Then the structure of flexure hinge is optimized by genetic algorithm to determine the optimal structural parameters.Finally,the finite element analysis was used to analyze the mode of the system composed of the flexible hinge and electrode.By comparing the characteristic frequency,transverse vibration amplitude and axial vibration amplitude,it was verified that the natural frequency of the flexible hinge optimized by genetic algorithm was closer to the operating frequency,and had the best effect of improving the axial vibration and restraining the transverse vibration.关键词
超声电火花(EDM)/扰动/柔性铰链/遗传算法Key words
edge cutting electrods EDM/disturbance/flexure hinge/genetic algorithm分类
矿业与冶金引用本文复制引用
刘晋丽..基于遗传算法的超声电火花微小孔加工用柔性铰链的数值分析与优化[J].模具技术,2023,(6):48-53,6.基金项目
西安航空职业技术学院2020年度科研计划项目《超声电火花复合加工深小孔技术研究》(编号:20XHZK-01). （编号:20XHZK-01）
