Automatic System for Providing the Required Indicators Quality in the Manufacture of Synthetic Yarns

Lobov, Boris; Kolpakhchyan, Pavel G.; Мikitinskiy, Alexandr; Перегудов, О. А.

doi:10.17213/0136-3360-2020-2-3-55-61

Cited by 1 publication

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“…During the long-term grinding process, the rotor is prone to unbalanced vibration, which will affect the surface quality of the workpiece and the service life of the spindle (Qiao and Hu, 2017;Huang et al, 2022). Therefore, the dynamic modeling study and vibration characteristics analysis of the rotor-bearing system under the action of UMP are of great significance for the optimum structural design and fault diagnosis of the grinding electric spindle (Lobov et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of grinding electric spindle bearing-rotor system under eccentric action

Sheng

Sun

et al. 2023

JAMDSM

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To study the influence of eccentricity on the dynamic characteristics of grinding electric spindle, firstly, the nonlinear oil film force (NOFF) expression of sliding bearing is established based on the boundary condition of adhesion pressure. Then, the expression of the unbalanced magnetic pull (UMP) under the eccentricity of the air gap is derived. Finally, the bearing-rotor dynamics equation of the grinding electric spindle considering the NOFF and UMP is established, and the dimensionless processing is carried out. The nonlinear dynamics study of the bearing-rotor system under the influence of geometric eccentricity and mass eccentricity is carried out through the shaft center trajectory and the shaft center vibration spectrum. The research results can provide reference for the optimal design of grinding electric spindle.

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Section: Introductionmentioning

confidence: 99%