CAJ | 학술논문

为有效提高深孔钻床关键件的动态性能并减轻其质量,运用有限元分析和拓扑优化相结合的方法,对Z8016深孔钻床主轴箱进行了结构优化设计.利用Pro/E对Z8016主轴箱初始结构进行了三维建模并导入HyperMesh进行模态分析;根据变密度法的基本思想,建立以箱体结构的相对密度为设计变量、以一阶固有频率最大化为目标函数、以体积分数(质量)为约束条件的拓扑优化模型,并以HyperWorks/OptiStruct软件为工具,对其进行拓扑优化,得到了主轴箱材料的最优分布图;根据优化方案对初始结构进行了重构设计.研究结果表明:改进后的主轴箱结构,一阶固有频率提高了6.71%,质量减少了6.85%,动态特性满足设计要求,从而为深孔加工机床中其他关键部件的结构优化提供了参考.
위유효제고심공찬상관건건적동태성능병감경기질량,운용유한원분석화탁복우화상결합적방법,대Z8016심공찬상주축상진행료결구우화설계.이용Pro/E대Z8016주축상초시결구진행료삼유건모병도입HyperMesh진행모태분석;근거변밀도법적기본사상,건립이상체결구적상대밀도위설계변량、이일계고유빈솔최대화위목표함수、이체적분수(질량)위약속조건적탁복우화모형,병이HyperWorks/OptiStruct연건위공구,대기진행탁복우화,득도료주축상재료적최우분포도;근거우화방안대초시결구진행료중구설계.연구결과표명:개진후적주축상결구,일계고유빈솔제고료6.71%,질량감소료6.85%,동태특성만족설계요구,종이위심공가공궤상중기타관건부건적결구우화제공료삼고.
To improve the dynamic characteristics and to reduce the weight of the key parts of deephole drilling machine,structural optimization design of spindle box of Z8016 was performed based on FEA and topology optimization. The original 3D solid model of the spindle box was built by using Pro/E,and modal analysis was carried by the platform of HyperMesh. According to the theory of density,the topology optimization model was established by taking the relative density of the structure as design variables and maximizing the firstorder natural frequency of the spindle box as objectives and the volume fraction as constraint conditions. The goals of improving the natural frequencies of the spindle box and reducing the structural weight were achieved and an optimal distribution of structural material of spindle box was obtained. Depending on the optimization results,the model of spindle box was redesigned. From the optimization results,the firstorder natural frequency is improved by 6.71%,the mass is reduced by 6.85%. The dynamic characteristics meet the design requirements. It provides reference for optimization design of other critical parts of deep hole drilling machine.