Design and simulation optimization of motorized spindle cooling system

doi:10.3785/j.issn.1006-754X.2023.00.008

Chin J Eng Design

2023, Vol. 30

Issue (1): 39-47 DOI: 10.3785/j.issn.1006-754X.2023.00.008

Optimization Design

Design and simulation optimization of motorized spindle cooling system

Yi LI¹(

),Guo-hua CHEN^1,²(

),Ming XIA¹,Bo LI^1,²

^1.College of Mechanical Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
^2.XY-HUST Advanced Manufacturing Engineering Research Institute, Xiangyang 441000, China

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Abstract

In order to solve the problem of poor cooling effect caused by complex internal temperature field of motorized spindle, a water cooler system for motorized spindle cooling was designed. According to the analysis results of the thermal characteristics of motorized spindle, a water cooler cooling scheme was proposed, the relevant heat transfer parameters were calculated, and the temperature?velocity control model for the motorized spindle was established. Then, the finite element simulation of fluid cooling for motorized spindle was carried out by ANSYS Fluent software, and the simulation results were verified by the motorized spindle cooling experiment. By comparing the simulation results and experimental results, it could be seen that the maximum temperature of the motorized spindle motor stator decreased by 60% and the deformation of the shaft decreased by 70% after cooling. The results show that the water cooler system has a good cooling effect on the motorized spindle, which can provide a certain reference for the research of active thermal control technology of high-precision machine tools.

Key words： motorized spindle temperature field water cooler system finite element simulation

Received: 30 May 2022 Published: 06 March 2023

CLC:

TH 133.2

Corresponding Authors: Guo-hua CHEN E-mail: trfmeliyi@163.com;59782071@163.com

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Cite this article:

Yi LI,Guo-hua CHEN,Ming XIA,Bo LI. Design and simulation optimization of motorized spindle cooling system. Chin J Eng Design, 2023, 30(1): 39-47.

URL:

https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2023.00.008 OR https://www.zjujournals.com/gcsjxb/Y2023/V30/I1/39

电主轴冷却系统设计与仿真优化

为解决电主轴因内部温度场复杂而造成冷却效果差的问题，设计了一种用于电主轴冷却的水冷机系统。根据电主轴热特性分析结果，提出了水冷机冷却方案，计算了相关的传热参数，并建立了电主轴温度?流速控制模型。然后，利用ANSYS Fluent软件对电主轴进行了流体冷却有限元仿真，并通过电主轴冷却实验对仿真结果进行了验证。通过对比仿真结果和实验结果可知，冷却后电主轴电机定子最高温度约下降了60%，转轴的形变量约降低了70%。结果表明：利用水冷机系统对电主轴进行冷却具有良好的冷却效果，这可为高精密机床主动热控制技术的研究提供一定的借鉴和参考。

关键词： 电主轴, 温度场, 水冷机系统, 有限元仿真

Fig.1 Profile of motorized spindle

Fig.2 Schematic diagram of heat distribution and transfer of motorized spindle

Fig.3 Overall structure of water cooler system

Fig.4 Principle of multi-circuit liquid supply device

Fig.5 Design scheme of cooling channel of motorized spindle

Table 1 Geometric dimension of cooling channel of motorized spindle

Table 2 Main technical parameters of AMS-120 high-speed motorized spindle

Table 3 Material parameters of motorized spindle simulation model

Table 4 Heat transfer coefficient in motorized spindle

Fig.6 Distribution of temperature monitoring points of motorized spindle

Fig.7 Temperature and deformation nephogram of motorized spindle before cooling

Fig.8 Temperature and deformation nephogram of motorized spindle after cooling (before optimization of refrigeration parameters)

Fig. 9 Temperature and deformation nephogram of motorized spindle after cooling (after optimization of refrigeration parameters)

Fig.10 Temperature nephogram of main structure of motorized spindle after cooling

Fig.11 Temperature change of key structure monitoring points of motorized spindle

Fig.12 Temperature change of key part monitoring points motorized spindle

Fig.13 Motorized spindle cooling test site

Fig.14 Experimental results of temperature change of motorized spindle

Fig.15 Experimental results of rotating shaft elongation of motorized spindle

Table 5 Comparison of simulation results and experimental results of motorized spindle temperature

Table 6 Comparison of simulation results and experimental results of rotating shaft elongation of motorized spindle


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