重型数控铣镗机床方滑枕有限元分析与优化

方滑枕的静动态特性直接影响整个机床的精度、加工性能和产品质量。本文运用三维软件建立了重型数控落地铣镗机床方滑枕、铣轴和镗轴的三维模型。根据机床的实际工作情况对方滑枕的受力和边界约束条件等进行了分析计算。通过分析得知其结构特性满足加工的条件要求,但其强度安全系数较大,结构比较臃肿,具有一定的优化空间。故将有限元方法和优化技术相结合,对其结构进行了以减重为目标以静态参数为约束的优化设计。

Optimize Designand Analysis for the Square Ram Deformation

The static and dynamic properties of square ram influence the precision and processability of the whole machine tool and products＇ quality directly.The research and analysis of the structure of square ram is very important realistic function and economic function to improve the NC machine＇ s precision and original structure and structural optimization design. According to results of the static and dynamic analysis, the static and dynamic properties of square ram meet the requirements of machining. Its intensity safety factor is high and it＇ s with optimal space for bloated structure. With combination of finite element analysis and optimization design, reducing the square ram＇ s weight as the optimum design and static parameters as constraint conditions, its structure is designed with type-selection optimization design method.