Nonlinear Dynamic Analysis and Chaos Prediction of Grinding Motorized Spindle System

Jia, Weitao; Gao, Feng; Li, Yan; Wu, Wenwu; Li, Zhongwei

doi:10.1155/2019/9643124

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Te analysis of the chaotic characteristics of the system is crucial in elucidating the impact of parameter changes on system stability, which is essential for overcoming the quality bottleneck in deep-hole parts processing [9][10][11][12]. At present, there is no general analytical paradigm for analyzing a complex nonlinear dynamic system [13][14][15][16], which also brings great challenges to the dynamic stability analysis of complex BTA deep-hole machining system with mechanical, electrical, and hydraulic multifeld coupling.…”

Section: Introductionmentioning

confidence: 99%

The Chaotic Property of BTA Deep-Hole Machining System under the Effect of Inner Cutting Fluid

Zhang

Zhao

et al. 2023

Shock and Vibration

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To clarify the action mechanism of parameter change on system stability, the chaotic property of BTA deep-hole machining system under the effect of inner cutting fluid was analyzed. According to the kinematic characteristics of the internal cutting fluid and the equation of the moment of momentum of the system, the kinematic equation of the boring bar considering the effect of the internal fluid was established. The critical conditions of chaos were deduced according to the Hamiltonian function and Melnikov function of the plane near-Hamilton system. The mechanism of the liquid filling ratio, cutting fluid flow velocity, and frequency ratio parameters on the system’s critical instability surface is investigated. The correlation and sensitivity of influencing factors, such as filling ratio and frequency ratio, and cutting fluid flow velocity to the sensitivity of system chaos are explored. The results show that in precision machining, the change of liquid filling ratio is positively related to the stability of the system, the change of cutting fluid flow velocity is negatively correlated with the stability of the system, and the change of frequency ratio has no monotonicity effect on the stability of the system. The sensitivity of the chaotic characteristics of the system to each parameter is bounded by the filling liquid ratio h = 0.58. When 0 ≤ h ≤ 0.58, frequency ratio ω ¯ > filling ratio h > cutting fluid flow velocity V0; when 0.58 < h ≤ 1, filling ratio h > frequency ratio ω ¯ > cutting fluid flow velocity V0. These research conclusions can lay a certain theoretical foundation for the analysis, control, and optimization of the complex mechanical behavior of BTA deep-hole machining systems in engineering practice.

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Section: Introductionmentioning

confidence: 99%

The Chaotic Property of BTA Deep-Hole Machining System under the Effect of Inner Cutting Fluid

Zhang

Zhao

et al. 2023

Shock and Vibration

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“…Nonlinearity in the thalamic relay nuclei that produced a spindle harmonic oscillation was discussed. Jia et al 8 established a nonlinear dynamic model of the grinding motorized spindle system considering centrifugal force and bearing stiffness softening. Dynamic behavior was investigated, and the threshold of chaos motion of system was predicted.…”

Section: Introductionmentioning

confidence: 99%

Theoretical investigation on nonlinear dynamic characteristic of spindle system

Gao

Qin

Wang

et al. 2020

Advanced Composites Letters

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Radial gap will occur at the spindle–tool holder interface when the spindle rotates at high speed. Therefore, the radial gap will lead to the nonlinear stiffness at the spindle–tool holder connection, and it will have effects on dynamic characteristic of spindle system. In this research, classic elastic theory is adopted to evaluate the nonlinear stiffness at spindle–tool holder interface. Dynamic model of spindle system is established considering the nonlinear stiffness at spindle–tool holder interface. The fourth-order Runge–Kutta method is applied to solve dynamic response of the spindle system. On that basis, effects of drawbar force on dynamic characteristic of the system are investigated. Considering the cutting force, effects of rotational speed on dynamic response of cutter tip are also discussed. The numerical results show that the drawbar force has effects on vibration mode of cutter tip. Chaotic motion will not occur within the range concerned in engineering practice. Considering the cutting force, the motion of cutter tip turns to be chaotic. The proper rotational speed and drawbar force should be chosen to ensure a stable cutting according to the response of cutter tip.

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Modelling and testing of the dynamic support stiffness of assembled bearings in motorized spindles

Tian,

Wang,

Zhao

et al. 2024

J Mech Sci Technol

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Nonlinear Dynamic Analysis and Chaos Prediction of Grinding Motorized Spindle System

Cited by 4 publications

References 30 publications

The Chaotic Property of BTA Deep-Hole Machining System under the Effect of Inner Cutting Fluid

The Chaotic Property of BTA Deep-Hole Machining System under the Effect of Inner Cutting Fluid

Theoretical investigation on nonlinear dynamic characteristic of spindle system

Modelling and testing of the dynamic support stiffness of assembled bearings in motorized spindles

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