Design of an Eccentric Vacuum Preloaded Aerostatic Bearing to Improve the Lateral Stiffness of Guideway

Yao, Jianhua; Zhu, Yin; Chai, Ning; Meng, Songtao; Li, Yanlong

doi:10.1080/10402004.2022.2028049

Cited by 2 publications

(4 citation statements)

References 26 publications

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“…The supporting forces from the upper or lower thrust bearing under the film thicknesses from 10 μm to 25 μm can be obtained based on the CFD method, as shown in Figure 10. The relationship between the supporting force and the film thickness can be obtained by 2-order polynomial fitting, as shown in Equation (25). The fitting curve is shown as the red curve in Figure 10.…”

Section: Thrust Stiffness Of the Aerostatic Spindlementioning

confidence: 99%

“…The fitting curve is shown as the red curve in Figure 10. The relationship between the supporting force and the film thickness can be obtained by 2-order polynomial fitting, as shown in Equation (25). The fitting curve is shown as the red curve in Figure 10.…”

Section: Thrust Stiffness Of the Aerostatic Spindlementioning

confidence: 99%

“…Because the structural stiffness of static pressure slides is relatively small, the influence of FSI is generally great. Some researchers adopt the transient FSI method to research the normal [23,24] and lateral stiffness [25] of static pressure slides.…”

Section: Introductionmentioning

confidence: 99%

“…2 − 3978.54h + 74121.0(25) k ft1 and k ft2 are the opposite numbers of the derivatives of F 1 and F 2 with respect to h 1 and h 2 , respectively. The opposite number of the derivative of F with respect to h is shown as:…”

mentioning

confidence: 99%

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Influence of the Mechanism of Fluid-Structure Interaction on Stiffness of Static Pressure Spindles and Slides

et al. 2023

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The stiffness of static pressure spindles and slides is affected by the phenomenon of fluid-structure interaction (FSI). Many methods have been proposed to calculate the stiffness with FSI considered. However, the influence of FSI on stiffness is still unknown. This paper studies the lateral stiffness of an aerostatic slide. The relationship between the lateral stiffness of the aerostatic slide, the lateral bearings, and the solid structure is deduced. According to the relationship, this paper proposes a theory that reveals the influence mechanism of FSI on the stiffness of static pressure spindles and slides. The proposed theory is also valid for the normal stiffness of the aerostatic slide and the thrust stiffness of an aerostatic spindle.

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Section: Thrust Stiffness Of the Aerostatic Spindlementioning

confidence: 99%

Section: Thrust Stiffness Of the Aerostatic Spindlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Influence of the Mechanism of Fluid-Structure Interaction on Stiffness of Static Pressure Spindles and Slides

et al. 2023

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Research Developments of Aerostatic Thrust Bearings: A Review

et al. 2022

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In aerostatic thrust bearings (ATBs), a high-pressure gas film with a certain bearing capacity and stiffness is formed by passing high-pressure gas between the moving surface and the static surface. Aerostatic bearings have outstanding advantages in the following aspects: high precision, high speed, and long service life, etc. They are widely used in many fields, such as high-speed air spindles, precision machine tools, air-bearing guideways, turbine machinery, and high-speed drills. With the pursuit of higher efficiency and high-precision machining machinery, there is an increasing demand for high-performance ATBs. Much effort has been spent on the study of ATBs, such as improvements in load capacity and stiffness, and the enhancement of stability. Some significant progress has been achieved. In this paper, the research developments of ATBs are summarized from several aspects, such as theoretical models and experimental methods, static performance, dynamic performance, and applications. In addition, insights on the breakthrough and development trends of ATBs are put forward. It is hoped that this paper can provide some guidance for the design and application of ATBs.

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Design of an Eccentric Vacuum Preloaded Aerostatic Bearing to Improve the Lateral Stiffness of Guideway

Cited by 2 publications

References 26 publications

Influence of the Mechanism of Fluid-Structure Interaction on Stiffness of Static Pressure Spindles and Slides

Influence of the Mechanism of Fluid-Structure Interaction on Stiffness of Static Pressure Spindles and Slides

Research Developments of Aerostatic Thrust Bearings: A Review

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