摘要
主轴系统的热误差是影响数控机床加工精度的重要因素。受自然界蜂巢分形结构的启发,设计了一种基于蜂巢仿生流道的主轴系统冷却结构,并建立了蜂巢仿生流道冷却结构模型。在数值传热学相关理论基础上,通过Fluent有限元软件对蜂巢仿生流道(单孔和多孔流道截面结构)和螺旋形流道冷却结构方案进行仿真计算,流固耦合分析结果显示两种前者流道结构比后者的流动特性较好,散热效果更好。在同等边界条件和冷却液体积相同情况下,多孔蜂巢形流道截面结构比单孔蜂巢形流道截面结构的散热效果更理想、温差更小。研究结果可以为主轴系统的冷却结构乃至电子元器件等微系统结构热设计提供参考。
The thermal error of spindle system is key important influencing factor for the machining accuracy of CNC machine tool.Enlightened by the fractal structure of honeycombs in natural word,this paper designed a new type of cooling structure of spindle system which is based on comby bionic channel.Based on the numerical heat transfer correlation theory,the structure model of bionic channel was established,and then the simulations of spiral channel and comby bionic channel,including channel cross-section structure of single-hole and multi-hole,were analyzed comparatively through fluid-structure interaction of the finite element software Fluent.The result shows that the heat dissipation effects and flow characteristics of comby bionic channel are better than spiral channel’s.Under the same boundary condition and cooling liquid volume,the multi-hole comby channel cross-section structure has better heat dissipation effect and smaller temperature difference than the single-hole comby channel cross-section structure.Those results can provide a reference for not only the thermal design of the spindle system cooling structure,but also the micro structure design,such as electron component and so on.
作者
邓小雷
李瑞琦
胡佳妮
曹晓梅
DENG Xiao-lei;LI Rui-qi;HU Jia-ni;CAO Xiao-mei(Key Laboratory of Air-driven Equipment Technology of Zhejiang Province,Quzhou University,Quzhou Zhejiang 324000,China;Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province,Zhejiang University,Hangzhou Zhejiang 310027,China;Zhejiang Yonglida CNC Technology Co.,Ltd.,Quzhou Zhejiang 324000,China)
出处
《计算机仿真》
北大核心
2020年第3期183-188,共6页
Computer Simulation
基金
国家自然科学基金(51605253)
浙江省博士后择优资助项目(zj20180077)
浙江省基础公益研究计划项目(LGG18E050014)
衢州市科技计划资助项目(2018T022)
校企合作教学团队项目(HZTD201701)。
关键词
仿生流道
主轴系统
冷却结构
流固耦合
热设计
Bionic channel
Spindle system
Cooling structure
Fluid-structure interaction
Thermal design
