Thermal characteristics analysis and cooling model optimization of motorized spindle

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2024-10-05 DOI:10.1016/j.csite.2024.105238

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Abstract

Aiming at the influence of poor cooling conditions and traditional cooling control strategy on motorized spindle temperature and machining performance. Firstly, the heat transfer model of the motorized spindle cooling system is studied. Secondly, the influence of coolant inlet flow rate and temperature on the thermal characteristics of the motorized spindle is studied. Then, a thermal network model is established to solve the temperature of each temperature measuring point. Finally, the thermal characteristic experiment of the motorized spindle is carried out, and the cooling fluid flow optimization model is established based on the particle swarm optimization algorithm and simulated annealing algorithm. The results show that the temperature difference of the motorized spindle does not exceed 45 °C, the thermal deformation does not exceed 40.2 μm, and the thermal elongation is inhibited by 36 %. The maximum error of the Thermal Network Method and Finite Element Method（FEM）is 14.24 %. The utilization of the average logarithmic temperature difference for assessing the cooling effectiveness of optimal flow rates revealed that the particle swarm optimization algorithm demonstrates a comparatively lower average logarithmic temperature difference in comparison to the simulated annealing algorithm. The heat exchange efficiency of the motorized spindle is higher under the optimal flow rate obtained by the particle swarm algorithm.

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电动主轴的热特性分析和冷却模型优化

针对冷却条件差和传统冷却控制策略对电主轴温度和加工性能的影响。首先，研究了电主轴冷却系统的传热模型。其次，研究冷却液入口流速和温度对电主轴热特性的影响。然后，建立热网络模型，求解各测温点的温度。最后，进行了电主轴的热特性实验，并基于粒子群优化算法和模拟退火算法建立了冷却液流量优化模型。结果表明，电主轴的温差不超过 45 °C，热变形不超过 40.2 μm，热伸长率抑制了 36%。热网法和有限元法（FEM）的最大误差为 14.24 %。利用平均对数温差评估最佳流速的冷却效果时发现，与模拟退火算法相比，粒子群优化算法的平均对数温差更小。在粒子群算法得到的最佳流速下，电主轴的热交换效率更高。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.