Abstract
Crankshaft is a core part of automobile engine to bear impact load and transmit power. Precision grinding is the most important machining method to achieve high precision of crankshaft main journal. Although many scholars have established various simulation models in the field of cylindrical grinding, it is difficult to carry out effective quantitative simulation for a given crankshaft main journal grinding system. Aiming at the shortcomings of the existing models, a double-rotor dynamic model is proposed, which considers the interaction between the grinding wheel and the main journal, and iterative algorithm is adopted to simulate material removal and roundness change in the grinding process of the main journal. The normal force between grinding wheel and the main journal is defined in detail in the algorithm, which is closer to the actual grinding process. For a given crankshaft grinding system, different grinding strategies of the main journal are quantitatively simulated by using the model. The proposed model and algorithm are validated by experiments, which can provide a basic model for the further study of the crankshaft cylindrical grinding system.
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Acknowledgements
The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (No.51575173) and the Science and Technology Major Project-Advanced NC Machine Tools & Basic Manufacturing Equipment (No: 2016ZX04003001).
Funding
This work was financially supported by the National Natural Science Foundation of China (No.51575173) and the Science and Technology Major Project-Advanced NC Machine Tools&Basic Manufacturing Equipments (No: 2016ZX04003001).
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Xu Zeng performed the experiments, made the simulation, and wrote the manuscript, while Wanli Xiong contributed to the conception of the study and helped perform the analysis with constructive discussions, Wenbiao Sun helped perform the analysis with constructive discussions, and Hongyan Ye and Zhiyong Tang helped perform the experiments.
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Zeng, X., Xiong, W., Sun, W. et al. Research on double-rotor dynamic grinding model and simulation algorithm for crankshaft main journal. Int J Adv Manuf Technol 114, 3391–3400 (2021). https://doi.org/10.1007/s00170-021-06761-9
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DOI: https://doi.org/10.1007/s00170-021-06761-9