基于TOSCA软件的精密卧式加工中心滑板的拓扑优化方法

发布时间：2018-06-04 17:00

本文选题：滑板 + 拓扑优化　；参考：《机械设计》2017年01期

【摘要】：研究了精密卧式加工中心"框中框"结构中关键结构件滑板的拓扑优化方法,提出了一种新的拓扑优化设计思路。首先在满足装配边界条件下最大限度地放开初始优化模型的设计区域,实现滑板的外轮廓拓扑优化;基于外轮廓结构设计得到二次拓扑优化模型,在约束外轮廓的基础上实现了滑板内部筋板的拓扑优化,最终得到一种新的滑板结构设计方案。在设计中以滑板结构多工况加权静态应变能最小,1阶固有频率最大为目标函数,以体积比为约束条件进行拓扑优化设计。采用新结构的滑板的静刚度在X,Y,Z三个方向均得到了提高,1阶固有频率提高了15.7%,质量减轻了6.5%,提出的优化方法对机床大件的拓扑优化具有重要的指导意义。
[Abstract]:In this paper, the topology optimization method of the slide plate of the key structural parts in the "frame in the frame" structure of the precision horizontal machining center is studied, and a new method of topology optimization design is proposed. Firstly, the design area of the initial optimization model is opened to the maximum extent under the condition of satisfying the assembly boundary, and the outer contour topology optimization of the slide plate is realized, and the secondary topology optimization model is obtained based on the outer contour structure design. Based on the constrained outer contour, the topology optimization of the inner stiffened plate is realized, and a new design scheme of the sliding plate structure is obtained. In the design of the sliding plate structure, the maximum of the minimum natural frequency of the first order of static strain energy is taken as the objective function, and the volume ratio is taken as the constraint condition to carry out the topology optimization design. The static stiffness of the slide plate with the new structure has been improved in the three directions of XY Z. The natural frequency of the first order has been increased by 15.7and the mass has been reduced by 6.5. the proposed optimization method has important guiding significance for the topology optimization of the large parts of the machine tool.
【作者单位】：天津大学机械工程学院;
【基金】：国家科技重大专项资助项目(2013ZX04005-013)
【分类号】：TG659

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