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为了最大限度地提升泡沫铝填充结构机床工作台的轻质性和静、动态性能,对前期设计的该结构工作台进行优化设计。优化设计过程中设定工作台的总体质量最小为目标函数,铸铁层外壳的厚度尺寸为优化变量,工作台的最大应力和最大变形量为约束条件。然后对优化前后的泡沫铝填充结构机床工作台的静、动态特性进行有限元仿真分析,对其质量进行计算,并将两种结构工作台的静、动态特性和质量进行比较。结果表明,优化后的泡沫铝填充结构机床工作台的轻质性和高静、动态性能更显突出。
In order to maximize the light weight, static and dynamic performance of the machine table of foam aluminum filled structure machine, the structural worktable designed in the previous stage was optimized. In the process of optimization design, the minimum total mass of workbench is set as the objective function. The thickness of cast iron shell is the optimal variable, and the maximum stress and the maximum deformation of worktable are the constraints. Then, the static and dynamic characteristics of the working table of foam aluminum filled structure machine before and after optimization are simulated by finite element method, the quality is calculated, and the static and dynamic characteristics and quality of the two kinds of structural worktable are compared. The results show that the optimized foam aluminum filling structure of machine tool table light and high static and dynamic performance is more prominent.