Dual-rotor Coupling Model and Simulation Algorithm for Round Journal Grinding Process

doi:10.3901/JME.2019.21.170

Abstract

Abstract: Shaft journal roundness directly effects machine tool spindle rotational accuracy. Since grinding has been applied in journal machining for a long time, it is an important method to achieve high precision journal machining. However, based on existing research results, it is difficult to perform effective complete quantitative simulations for the journal profile grinding process of a given grinding system, and it is also hard to make scientific and reasonable prediction for the finishing roundness. Based on the conventional grinding rotor system model, the grinding wheel-workpiece coupling effect, material removal, rotor vibration and compatibility functions, a new dual-rotor vibration grinding system model is established. A novel "transient grinding force-depth" iterative algorithm is proposed to simulate the material removal and the roundness variation. Using the model and the algorithm, the journal rounding process under different grinding strategies are quantitively simulated. The material removal processes and profile changing procedure are reproduced in the calculation. The grinding strategy effects on grinding efficiency and finishing roundness are studied. Comparative experiments are performed, and the proposed method is validated by the test results.

Key words: cylindrical grinding, journal, rounding process, double-rotor coupling model, simulation algorithm, grinding strategy

CLC Number:

TH133
TG584

XIONG Wanli, CHEN Jianhua, DING Wenxiang, ZENG Xu, ZHENG Lianggang. Dual-rotor Coupling Model and Simulation Algorithm for Round Journal Grinding Process[J]. Journal of Mechanical Engineering, 2019, 55(21): 170-177.

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