An Mechatronics Coupling Design Approach for Aerostatic Bearing Spindles

Wu, Quanhui; Sun, Yazhou; Chen, Wanqun; Liu, Haitao; Luo, Xichun

doi:10.1007/s12541-019-00098-w

Cited by 11 publications

(3 citation statements)

References 27 publications

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“…A simplified motor model with a 10poles/12slots is carried out, and the permeability between stator and rotor is assumed to be infinite. Table 1 [33] lists the detailed parameters of PMSM, and Ansoft Maxwell is used to simulate the motor model. Firstly, the rotor inner circle and the stator outer circle are selected as the boundary, which has no magnetic flux leakage.…”

Section: Rmf Calculationmentioning

confidence: 99%

“…The compressed air forms air film lubrication when flowing through the orifice, and withstands the axial load. The throttle parameters are shown in Table 2 [33]. In order to study the performance of the spindle system, the detail requirements for the mechanical structure are put forward: the axial stiffness is better than 300N/μm, and the journal stiffness is better than 300N/μm.…”

Section: Air Pressure Variationmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Unbalanced Electromagnetic Force and Air Supply Pressure Fluctuation in Air Bearing Spindles on Machining Surface Topography

Sun

Chen

et al. 2020

Int. J. Precis. Eng. Manuf.

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Air Bearing Spindles (ABS) can meet high accuracy demands for the precise rotation motion, which adopt air bearings to support spindle shaft, and the spindle shaft directly connects the motor rotor. The unbalanced electromagnetic force caused by motor rotor eccentricity (MRE) and air pressure fluctuation (APF) are two important influential factors to the dynamic performance of the spindle system and machining surface quality. This paper addresses the problems of measuring the MRE and APF in an ABS through testing machining surface topography. A permanent magnet synchronous motor (PMSM) was modelled by finite element simulation (FES). Through FES it found that the MRE between the motor rotor and stator hole produced a Radial Magnetic Force (RMF), which could cause ABS to periodically vibrate in the axial direction. Besides, the change of the air supply caused the stiffness variation of ABS and result in the tilt error motions of the spindle shaft. A theoretical model of machining surface topography considering MRE and APF was then proposed for the first time, which revealed that the MRE and APF resulted in the periodic fluctuations of the machining surface topography. The overall surface topography then became grooved surfaces. The above findings were finally validated by measurement results of ultraprecision diamond turning experiments.

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Section: Rmf Calculationmentioning

confidence: 99%

Section: Air Pressure Variationmentioning

confidence: 99%

Influence of Unbalanced Electromagnetic Force and Air Supply Pressure Fluctuation in Air Bearing Spindles on Machining Surface Topography

Sun

Chen

et al. 2020

Int. J. Precis. Eng. Manuf.

Self Cite

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“…Su et al [ 21 ] constructed the fluid-solid coupling model of ABS, and studied the influence of temperature rise on the stiffness and bearing capacity of the air film. Previous research comprehensively considered the mutual influence of electromagnetic effects, static pressure characteristics, servo control, and mechanical characteristics according to the design principles [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Micro Cutting Mechanism and Surface Topography Generation in Ultraprecision Diamond Turning

Chen

Liu³

et al. 2022

Micromachines

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Revealing forming mechanism of workpiece surface topography plays an important role in improving ultraprecision turning. In this paper, the forming mechanism of the turning workpiece surface topography is analyzed and verified by the theoretical simulation and experiment respectively. First, the factors directly related to the turning process are analyzed, and a volumetric error model is built and discussed, which considered geometric errors, tool geometry, spindle vibrations, feed rate, cut depth, and feed system position change. The vibration mechanism and laws of the spindle system under multi-field coupling is analyzed, and the effect of the spindle axial vibration on the turning surface topography is studied. In addition, influence of coupled vibrations on the turning surface texture is analyzed, and an equivalent machining model is constructed to identify crucial geometric errors of the workpiece surface topography. Finally, a homemade ultraprecision machine tool system is built and used for turning the workpiece surface, and the tested results of the surface topography demonstrate Ra is better, 10 nm and Rv is better, 20 nm. The end face of the workpiece forms periodically fluctuating wave and ripple patterns, and the comparison between theoretical analysis and experimental detection of the surface topography is verified.

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A modified similitude analysis method for the electro-mechanical performances of a parallel manipulator to solve the control period mismatch problem

Jun

Song

Liu

et al. 2021

Sci. China Technol. Sci.

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An Mechatronics Coupling Design Approach for Aerostatic Bearing Spindles

Cited by 11 publications

References 27 publications

Influence of Unbalanced Electromagnetic Force and Air Supply Pressure Fluctuation in Air Bearing Spindles on Machining Surface Topography

Influence of Unbalanced Electromagnetic Force and Air Supply Pressure Fluctuation in Air Bearing Spindles on Machining Surface Topography

Investigation on the Micro Cutting Mechanism and Surface Topography Generation in Ultraprecision Diamond Turning

A modified similitude analysis method for the electro-mechanical performances of a parallel manipulator to solve the control period mismatch problem

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