| LI Xiao-qiang,DAI Shi-jie,ZHANG Hui-bo.Modeling and Experimental Study of Grinding Temperature Field Based on Annular Non-uniform Heat Source[J],49(5):343-353 |
| Modeling and Experimental Study of Grinding Temperature Field Based on Annular Non-uniform Heat Source |
| Received:May 06, 2019 Revised:May 20, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2020.05.041 |
| KeyWord:non-uniform heat source numerical model of temperature field surface grinding cup wheel composite |
| Author | Institution |
| LI Xiao-qiang |
1.a. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, b. School of mechanical engineering, Hebei University of Technology, Tianjin , China; 2.Hebei Key Laboratory of Robot Perception and Human-robot Interaction, Tianjin , China |
| DAI Shi-jie |
1.a. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, b. School of mechanical engineering, Hebei University of Technology, Tianjin , China; 2.Hebei Key Laboratory of Robot Perception and Human-robot Interaction, Tianjin , China |
| ZHANG Hui-bo |
1.a. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, b. School of mechanical engineering, Hebei University of Technology, Tianjin , China; 2.Hebei Key Laboratory of Robot Perception and Human-robot Interaction, Tianjin , China |
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| Abstract: |
| The paper aims to solve the problems of thermal damage and difficulty in real-time temperature monitoring in surface grinding of composite materials by cup wheel and study the dynamic variation law of grinding temperature field. In this paper, by analyzing the material removal mechanism in surface grinding by cup wheel, a non-uniform heat source model under cylindrical coordinate system with different function distribution in circumference and radial direction was proposed. And based on this model, an numerical model of grinding temperature field was established to predict grinding temperature. Finally, a calculation method of temperature prediction error caused by heat carried away by debris was proposed. The validation experiments of thermocouple temperature measurement were carried out, and the predicted and experimental values under different heat source models were compared to verify the accuracy of the non-uniform heat source and its temperature field model. Compared with the temperature field under the uniform heat source, which under the non-uniform heat source was more agreement with the actual temperature field, and the error of temperature prediction was reduced from about 23% to within 6.5%. The experimental results show that grinding depth has a great influence on grinding temperature. To ensure the accuracy of temperature prediction, it is necessary to consider the error caused by heat carried away by debris during high efficiency deep grinding. |
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