Unstable vibration in centreless grinding: Part 1. Geometric instability or chatter?

Pearce, T.R.A.; Stone, Brian

doi:10.1177/2041297510393789

Cited by 11 publications

(23 citation statements)

References 15 publications

(27 reference statements)

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“…6 One of the main issues for the application of high spindle speeds in centreless grinding is the control of the process stability by adjusting the speed of the workpiece. 7…”

Section: Introductionmentioning

confidence: 99%

Investigation of a carbon fibre-reinforced plastic grinding wheel for high-speed plunge-cut centreless grinding application

Hänel

Teicher

Pätzold

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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High-speed plunge-cut centreless grinding opens up enormous potential for the manufacturing of difficult-to-machine materials and to improve the surface quality while reducing the grinding forces. For this investigation, a new grinding wheel base body of carbon fibre-reinforced plastic (CFRP) was developed to achieve grinding wheel speeds up to 150 m/s in plunge-cut centreless grinding of hardened shafts. For evaluation of the performance characteristics, the grinding forces and the surface quality of different grinding tools were detected. These experiments were conducted using a newly developed measuring system to analyse the grinding forces in the workrest blade. The experimental results are described and discussed in this article.

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“…6 One of the main issues for the application of high spindle speeds in centreless grinding is the control of the process stability by adjusting the speed of the workpiece. 7…”

Section: Introductionmentioning

confidence: 99%

Investigation of a carbon fibre-reinforced plastic grinding wheel for high-speed plunge-cut centreless grinding application

Hänel

Teicher

Pätzold

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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show abstract

“…The vibration amplitude, frequency and machining speed that affect the surface quality were discovered to decrease surface waviness error. 9 Pearce and Stone 10 described a model of centerless grinding that including the machine dynamics and regeneration on both the workpiece and the grinding wheel allows unstable vibration to be investigated. Bi et al 11 investigated the effects of grinding wheel vibration on surface topography and decreased the waviness error of optical surface by choosing parameters.…”

Section: Introductionmentioning

confidence: 99%

Investigation of waviness error in surface grinding of large axisymmetric aspheric lenses

Lin

Liu

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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Waviness error is one of the most critical errors in the large aspheric lenses grinding and one that has a strong impact on the performance of the optical system. In this article, the waviness error of large axisymmetric aspheric lenses for Xaxis direction as well as Z-axis direction is analyzed by employing grate parallel grinding method. The grinding wheel vibration and Z-axis interpolation pace are regarded as the main causes of the surface waviness error. Furthermore, to reduce the waviness error, the influence of grinding parameters on waviness error is investigated. The waviness errors measured during grinding experiments are in good agreement with the theoretical results and the appropriate grinding parameters are recommended.

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“…It should be noted that chatter vibrations can also occur in other manufacturing process including milling and grinding operations. 22–27…”

Section: Introductionmentioning

confidence: 99%

Stability of the coupled vibrations of work roll and strip in cold rolling process

2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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Undesirable vibrations that occurred in cold rolling mills, widely known as chatter, are studied in this article by considering the interaction of three types of vibrations, namely, the longitudinal vibration of the rolled strip and the torsional and vertical vibrations of the upper work roll. The dynamic component of rolling force is determined using the quasi-static model under the assumption that the changes in roll gap and strip tension produce the variation of rolling force. The coupled vibrations of the work roll and rolled strip are mathematically governed by a set of 3-degree-of-freedom nonlinear equations. Under chatter conditions, a new variable is introduced to represent the motion of the quasi-neutral point. A stability criterion for the motion of the quasi-neutral point is developed by studying the eigenvalues of the corresponding characteristic equation of the linearized parts of the non-linear equations. The chatter stability can then be examined by evaluating the determinants of five matrices. Numerical examples are given to show the stable and unstable vibrations in the cold rolling process. The unstable vibration would lead to skidding phenomenon and even break the rolled strip. The results presented in this article provide new insights into the dynamic interaction of the coupled vibrations and the dynamics of the rolling process.

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Unstable vibration in centreless grinding: Part 1. Geometric instability or chatter?

Cited by 11 publications

References 15 publications

Investigation of a carbon fibre-reinforced plastic grinding wheel for high-speed plunge-cut centreless grinding application

Investigation of a carbon fibre-reinforced plastic grinding wheel for high-speed plunge-cut centreless grinding application

Investigation of waviness error in surface grinding of large axisymmetric aspheric lenses

Stability of the coupled vibrations of work roll and strip in cold rolling process

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