Effects of oil recess structural parameters on comprehensive tribological properties in multi-pad hydrostatic thrust bearing for CNC vertical processing equipment based on low power consumption

Yu, Xinquan; Zhang, Ruiming; Zhou, Defan; Zhao, Yan; Chen, Minmin; Han, Zelin; Li, Shihao; Jiang, Hui

doi:10.1016/j.egyr.2021.09.017

Cited by 11 publications

(7 citation statements)

References 14 publications

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“…Chan et al [24] applied the multi-objective particle swarm optimization technique to optimize the load-bearing capacity in a hydrostatic spindle load-bearing model. Yu et al [25,26] analyzed the impact of groove structure in a hydrostatic thrust bearing on its overall tribological performance. The aforementioned studies demonstrate that modifying design parameters and enhancing the structural aspects can effectively enhance the performance of hydrostatic oil pads and hydrostatic bearings.…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis and Restrictor Structure Improvement of an Internal Feedback Hydrostatic Turntable Oil Pad Considering Internal Flow

Yang,

Shao,

et al. 2024

Advcd Theory and Sims

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This paper provides a comprehensive exploration of the operational mechanism of an internal feedback hydrostatic turntable. It employs a self‐compensating gap restrictor mechanism, resulting in heightened load capacity and stiffness. In this paper, the concept of internal flow is innovatively introduced. Subsequently, the Reynolds equation is solved using the finite difference method. This methodology offers a more precise and efficient assessment of the load‐bearing performance of the oil pad within the turntable. Then this paper further investigates the influence of the internal flow coefficient and pressure ratio on oil pad performance, encompassing aspects like load capacity, stiffness, and flow rate. Ultimately, optimal parameters are selected to improve the structure of the gap restrictor, considering various operational scenarios. In conclusion, the method adopted in this study not only improves the calculation accuracy and efficiency but also improves the structure and performance of the oil pad.

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Section: Introductionmentioning

confidence: 99%

“…Yu et al. [ 25,26 ] analyzed the impact of groove structure in a hydrostatic thrust bearing on its overall tribological performance. The aforementioned studies demonstrate that modifying design parameters and enhancing the structural aspects can effectively enhance the performance of hydrostatic oil pads and hydrostatic bearings.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Restrictor Structure Improvement of an Internal Feedback Hydrostatic Turntable Oil Pad Considering Internal Flow

Yang,

Shao,

et al. 2024

Advcd Theory and Sims

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“…Thrust bearings are widely used in critical industries such as hydropower, nuclear power, aerospace, and shipbuilding due to their high rotation accuracy, strong speed compatibility, high reliability and large load-bearing capacity [1][2][3][4][5]. However, the excellent performance of thrust bearings is often significantly affected by loading capacity and temperature of oil film, especially under heavy-load and high-speed operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect and optimization of triangular textures on lubrication performance of the thrust bearing

Yu,

Shi,

Jiang

et al. 2024

Preprint

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To enhance the loading capacity of the oil film and reduce its temperature, this article establishes a thrust bearing model with a triangular texture based on the modified Reynolds equation. The focus is on investigating the influence of texture parameters on both the temperature and pressure fields of the oil film. For the purpose of determining the parameter combination under the best lubrication performance, the improved multi-objective dragonfly algorithm (MODA) based on BP neural network is employed to optimize the temperature and loading capacity of oil film. The investigation revealed that the optimal lubrication performance is achieved with a texture width of approximately 0.23 mm, a texture depth of 0.5 mm, a texture number of 32 and a texture spacing of 5 mm. Under these conditions, when compared with a thrust bearing without texture, the textured thrust bearing increases its loading capacity by approximately 29% and reduces temperature by approximately 1.75 ºC.

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“…Novotný P combines lubrication and heat transfer models to optimize the structure of circular thrust bearings based on genetic algorithms, reducing friction losses by about 30% [12]. Yu XD used computational fluid dynamics and lubrication theory to study the effects of oil cavity shape, oil seal edge width, workbench rotation speed, lubricating oil viscosity, and bearing groove size and position on the tribological performance of hydrostatic thrust bearings, respectively [13][14][15][16]. Sahu K and Sharma SC studied the effects of magnetorheological lubricants and micro groove geometries (rectangular, circular, and triangular) on the lubrication performance of radial bearings [17,18].…”

Section: Introductionmentioning

confidence: 99%

Theoretical-Simulation-Experimental Study on the Hybrid Lubrication Performance of Stepped Hydrostatic Thrust Bearing

Feng

Jiang

et al. 2023

Preprint

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Based on static pressure support technology, hydrodynamic, statics theory and tribology theory, theoretical derivation, calculation, simulation, and experimental monitoring of the static pressure, dynamic pressure, total pressure, dynamic pressure ratio, and total temperature rise of the lubricating oil film were conducted. The characteristics of stepped hydrostatic thrust bearing clearance oil film hybrid lubrication were obtained for the first time using a combination of theory, simulation, and experiment. It is found that the static pressure and total pressure of the oil film meet the reduction modes of the Fourier yj function and Fourier yz function within the rotating speed of 0r/min-200r/min. Within the load range of 0t-30t, the static pressure and total pressure of the oil film conform to the growth pattern of the Fourier yj function and Fourier yz function with constant term slopes of 10200 and 12150, and intercepts of 127700 and 156700. The theoretical value of oil film dynamic pressure and rotational speed exhibit a linear growth relationship with a slope of 275.2. The simulation value and rotational speed follow the growth law of the Fourier y model and are basically not affected by the size of the load. As the rotational speed increases, the oil film temperature of the rectangle on the outer side of the oil pad presents a concave shape in the circumferential distribution, while the rectangle on the inner side presents a convex shape.

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Effects of oil recess structural parameters on comprehensive tribological properties in multi-pad hydrostatic thrust bearing for CNC vertical processing equipment based on low power consumption

Cited by 11 publications

References 14 publications

Performance Analysis and Restrictor Structure Improvement of an Internal Feedback Hydrostatic Turntable Oil Pad Considering Internal Flow

Performance Analysis and Restrictor Structure Improvement of an Internal Feedback Hydrostatic Turntable Oil Pad Considering Internal Flow

Effect and optimization of triangular textures on lubrication performance of the thrust bearing

Theoretical-Simulation-Experimental Study on the Hybrid Lubrication Performance of Stepped Hydrostatic Thrust Bearing

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