Effect of the Eccentricity between the Driving Shaft and the Guide Ring on the Behavior of Magnetic Fluid Grinding of Ceramic Balls.

Zhang, Bo; Umehara, Noritugu; Kato, Koji

doi:10.2493/jjspe.61.586

Cited by 6 publications

(3 citation statements)

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“…For this reason the contact traces for the eccentric V-groove grinding mechanism are distributed in a wide area on the ball surface, and the sphericity of ground balls is expected to improve. This expectation has been confirmed by experiments [10].…”

Section: Contact Trace In Stable Grinding Conditionssupporting

confidence: 69%

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Spherical surface generation mechanism in the grinding of balls for ultraprecision ball bearings

Zhang

Nakajima

2000

Proceedings of the Institution of Mechanical Engineers, Part J:

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Ultraprecision ball bearings are necessary for high-precision machines and/or high-speed machines since the vibration caused by ball bearings determines the precision of machines as a whole and may make high-speed machines fail to work. To produce ultraprecision ball bearings, it is necessary to clarify spherical surface generation mechanism in the grinding of balls. This paper is the first attempt to investigate the contact trace distribution on the ball surface, which is crucial to spherical surface generation. The kinematic analysis of the contact trace shows that the contact trace is a fixed circle on the ball surface and the contact points are not uniformly distributed on the ball surface. Experimental observation of the contact trace was also carried out. The observation is in good agreement with the analysis. Suggestions on how to distribute the contact trace over the whole ball surface and therefore to improve the precision of balls are given.

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Section: Contact Trace In Stable Grinding Conditionssupporting

confidence: 69%

“…The high material removal rate in magnetic fluid grinding is due to the high skidding speed at the contact point of the balls with the drive shaft [8,9]. Later the magnetic fluid grinding method was modified by Zhang et al [10], and the modified method gave better sphericity.…”

Section: Introductionmentioning

confidence: 99%

Spherical surface generation mechanism in the grinding of balls for ultraprecision ball bearings

Zhang

Nakajima

2000

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Further research has been published on the magnetic design of the cell [6,7], achievable roundness and surface ® nish [4,7], process improvement by modifying the cell geometry and by controlling the¯oat compliance [8,9] and process mechanics modelling, to predict the onset of slip and the resulting sliding speeds [ 10± 13].…”

Section: Introductionmentioning

confidence: 99%

Fluid drag, ball interaction and gyroscopic effects in magnetic fluid grinding

Chang

Childs

2001

Proceedings of the Institution of Mechanical Engineers, Part B:

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Experimental studies of the magnetic fluid grinding process have previously established that it is an abrasive grinding process. Sliding between the material being ground (for example, a ceramic ball being finished) and the grinding surface occurs because of viscous drag forces and torques acting on the ground material as it is driven through a magnetic liquid. Mechanical models of the process have qualitatively predicted trends in grinding rates resulting from changes in operating conditions, but have not been quantitatively accurate. This paper establishes that the reason is inaccurate modelling, in the previous work, of the fluid drag forces and torques. Improved modelling now gives accurate prediction of the motions in a grinding cell. Interactions between balls travelling in a train and gyroscopic effects are also reported on; they are of secondary importance in influencing slip magnitude at the grinding surface but do provide mechanisms for randomizing ball motions.

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Kinematics and trajectory in processing precision balls with eccentric plate and variable-radius V-groove

Zhou

Yuan

Lyu

et al. 2015

Int J Adv Manuf Technol

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Effect of the Eccentricity between the Driving Shaft and the Guide Ring on the Behavior of Magnetic Fluid Grinding of Ceramic Balls.

Cited by 6 publications

References 0 publications

Spherical surface generation mechanism in the grinding of balls for ultraprecision ball bearings

Spherical surface generation mechanism in the grinding of balls for ultraprecision ball bearings

Fluid drag, ball interaction and gyroscopic effects in magnetic fluid grinding

Kinematics and trajectory in processing precision balls with eccentric plate and variable-radius V-groove

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