考虑砂轮-工件接触几何的立轴平面磨削热流分布和传热机制研究

doi:10.3901/JME.2025.23.381

机械工程学报 ›› 2025, Vol. 61 ›› Issue (23): 381-394.doi: 10.3901/JME.2025.23.381

• 制造工艺与装备 • 上一篇

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考虑砂轮-工件接触几何的立轴平面磨削热流分布和传热机制研究

高宾华¹, 金滩², 谢桂芝², 曲美娜³

1. 湖南工商大学智能工程与智能制造学院长沙 410205;
2. 湖南大学国家高效磨削工程技术研究中心长沙 410082;
3. 燕山大学机械工程学院秦皇岛 066000

收稿日期:2024-12-18 修回日期:2025-06-09 发布日期:2026-01-22
作者简介:高宾华,男,1991 年出生,博士,讲师。主要研究方向为砂轮电化学靶向无损清理技术、磨削工艺与理论。E-mail:gaochuxu@163.com
金滩(通信作者),男,1962 年出生,博士,教授,博士研究生导师。主要研究方向为高效磨削工艺理论与工艺技术、磨削传热分析。E-mail:tjin@hnu.edu.cn
基金资助:
湖南省教育厅优秀青年资助项目(22B0626)

Study on Heat Flux Distribution and Heat Transfer Mechanism Considering Wheel-workpiece Contact Geometry in Vertical-spindle Surface Grinding

GAO Binhua¹, JIN Tan², XIE Guizhi², QU Meina³

1. School of Intelligent Engineering and Intelligent Manufacturing, Hunan University of Technology and Business, Changsha 410205;
2. National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082;
3. School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066000

Received:2024-12-18 Revised:2025-06-09 Published:2026-01-22

摘要/Abstract

摘要： 立轴平面磨削能够适应包括超精密磨削和重负荷磨削在内的多重加工任务，但过大的砂轮-工件接触面会使磨削液冷却润滑效果变差，易形成磨削高温。解析温度场和控制热损伤的关键是对磨削传热机制的深入了解。基于实测磨削温度信号和曲面接触移动热源模型，提出立轴平面磨削热流分布的反推计算方法，建立考虑砂轮-工件接触几何的热流分布模型；以能量分配比、砂轮/磨削液复合体系的有效热导率、对流换热系数为指标，探讨材料去除和磨削液冷却润滑作用对磨削传热机制的影响。磨削深度增加使主磨削区延长，更多磨粒层参与切削，磨削液进入磨削区变难，热流信号延长、幅值增大、峰值位置外移；磨削速度和进给速度增加不改变砂轮-工件接触几何和局部磨削深度，但会改变未变形切屑厚度，削弱磨削液在磨削区内的冷却润滑效应及在磨削区外的对流冷却效应，因此热流分布形状无明显变化，而幅值发生改变。

关键词: 立轴平面磨削, 砂轮-工件接触几何, 热流分布, 能量分配比, 对流换热系数

Abstract: Vertical-spindle surface grinding is capable of multiple processing tasks such as ultra-precision grinding and heavy-load grinding. However, excessive contact surface between the wheel and workpiece can impair the effect of cooling and lubrication provided by the grinding fluid, consequently leading to a high grinding temperature. A thorough understanding of the grinding heat transfer mechanism is pivotal for analyzing temperature fields and controlling thermal damage. Utilizing measured grinding temperature signals and a curved-surface contact moving heat source model, an inverse heat transfer methodology is developed to determine the heat flux distribution in vertical-spindle surface grinding. Subsequently, a model is constructed that incorporates the wheel-workpiece contact geometry into the heat flux distribution analysis. The impact of material removal and the cooling lubrication by the grinding fluid on grinding heat transfer mechanism is examined, using the energy partition ratio, effective thermal conductivity of the wheel/fluid composites, and convection heat transfer coefficient as benchmarks. Increased grinding depth extends the primary grinding zone, causing more abrasive layers to engage in cutting, and making it difficult for the grinding fluid to penetrate this zone. As a result, there is an elongation of the heat flux signal, an increase in the amplitude, and a shift in the peak position outward.Enhancements in grinding speed and feed rate keep the wheel-workpiece contact geometry and local grinding depth consistent, but modify the undeformed chip thickness. This modification diminishes the cooling lubrication effect of the grinding fluid within the grinding zone and its convection cooling effect outside, affecting the heat flux distribution only in terms of amplitude, not shape.

Key words: vertical-spindle surface grinding, wheel-workpiece contact geometry, heat flux distribution, energy partition ratio, convection heat transfer coefficient

中图分类号:

TG580

高宾华, 金滩, 谢桂芝, 曲美娜. 考虑砂轮-工件接触几何的立轴平面磨削热流分布和传热机制研究[J]. 机械工程学报, 2025, 61(23): 381-394.

GAO Binhua, JIN Tan, XIE Guizhi, QU Meina. Study on Heat Flux Distribution and Heat Transfer Mechanism Considering Wheel-workpiece Contact Geometry in Vertical-spindle Surface Grinding[J]. Journal of Mechanical Engineering, 2025, 61(23): 381-394.

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考虑砂轮-工件接触几何的立轴平面磨削热流分布和传热机制研究

Study on Heat Flux Distribution and Heat Transfer Mechanism Considering Wheel-workpiece Contact Geometry in Vertical-spindle Surface Grinding

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