矿物质直驱车铣复合中心立柱优化设计与研究

Optimal Design and Research for Column of Mineral Direct Drive Turning-Milling Compound Center

基于矿物质直驱车铣复合中心的立柱大多为实心结构,存在材料消耗大、整体偏重、制造成本高等问题,以CXK80型矿物质立柱为原型,对其开展动静态性能和热传导分析,把减轻矿物质立柱的质量、提高强度和刚度作为优化目标,运用拓扑优化和基于遗传算法的多目标尺寸优化方法对其进行减重设计。仿真结果显示:矿物质立柱经优化后减重14.2%,导轨镶嵌面温度降低21%,且立柱的前2阶模态均有相应提升。为验证仿真分析的有效性,利用模态锤击的方法进行验证,实验数据和仿真数据基本一致,误差在3%以内,实现了矿物质立柱减重、节省制造成本的目标。

The column of the mineral direct-drive turning-milling compound center is generally a solid structure,which has problems such as heavy structure,material waste,and high manufacturing cost.Taking the CXK80 mineral material column as the research object,the dynamic and static performance analysis and heat transfer analysis were carried out.Then,reducing the weight of the mineral material column,improving its strength and stiffness were set as optimization objectives.The topology optimization and multi-objective dimension optimization based on genetic algorithm were used for lightweight design.The simulation results show that the weight of the optimized mineral material column is reduced by 14.2%,the temperature on the guide rail embedding surface is decreased by 21%,and the first two modal frequencies of the column are correspondingly improved.To verify the effectiveness of the simulation analysis,modal hammer impact experiments were conducted.The experimental data and simulation data are basically consistent with an error within 3%,achieving the goal of reducing the weight of the mineral material column and saving manufacturing costs.