Stability analysis of turning process with tailstock-supported workpiece

Sekar, M.; Srinivas, J.; Kotaiah, K. Rama; Yang, Seung-Han

doi:10.1007/s00170-008-1764-2

Cited by 47 publications

(39 citation statements)

References 11 publications

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“…This makes the described approach a significant generalization and an extension to prior works [7,9,[13][14][15][16].…”

Section: Identification Of Stability Lobesmentioning

confidence: 99%

“…In [12] different geometries of the workpiece corresponding to different machining stages were taken into account but no position-dependent dynamics was calculated. The authors of [13][14][15][16] studied the stability in turning with and without tailstock-supported workpiece. However, their methods are restricted to a specific number of modes along one spatial direction.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Position-dependent stability analysis of turning with tool and workpiece compliance

Otto

Khasawneh

Radons

2015

Int J Adv Manuf Technol

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A universal frequency domain approach for studying the dynamics of metal cutting with a flexible workpiece and a compliant tool is derived. The method is used for the identification of the position-dependent stability lobes in turning. It enables a fast, accurate, and systematic stability analysis of turning processes in the parameter space, which is not restricted to simple dynamic models with only a specific number of modes in one spatial direction. In particular, a combination of experimental data for the tool tip dynamics with analytical or numerical data for the workpiece dynamics is possible, which is demonstrated by a concrete example. The effect of the mode interaction between tool and workpiece modes via the cutting process is illustrated. Counterintuitively, the possibility of a process destabilization for an increased workpiece stiffness was observed, which can be explained by the mode interaction. The presented methods and results can be efficiently used for optimizing machine tool development and process planning.

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“…This makes the described approach a significant generalization and an extension to prior works [7,9,[13][14][15][16].…”

Section: Identification Of Stability Lobesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Position-dependent stability analysis of turning with tool and workpiece compliance

Otto

Khasawneh

Radons

2015

Int J Adv Manuf Technol

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“…19 From the results, they observed that using Magneto rheological fluid damper, tool vibration can be reduced and cutting performance can be improved effectively. Sekar et al 20 presented stability analysis in turning process with a coupled dynamic model of cutting tool and tailstock supported workpiece. The effect of the cutting position, workpiece dimensions, cutter flexibility, and cutter damping on the dynamic stability was presented with the dynamic model and they observed that the experimental chatter establishes the stable states accurately in rough turning operations for the proposed model.…”

Section: Kwok Et Almentioning

confidence: 99%

The Effect of Cutting Parameters on Tool Vibration During Magnetorheological Fluid Controlled Turning Bar

Paul¹,

Sunil²,

Varadarajan³

2017

IJAV

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Tool vibration is a dynamic instability of the cutting process, which is a result of the interaction between the metal cutting process and the dynamics of a machine tool. The presence of such tool vibration leads to a poor surface finish, which results in cutting tool damage and the production of irritating and unacceptable noise. In order to reduce tool vibration, a magnetorheological fluid damper was developed that will respond to an applied field with a dramatic change in their rheological behaviour. The essential characteristic of these fluids is their ability to reversibly change from a free-flowing, linear, viscous liquid to a semi-solid with a controllable yield strength within milliseconds when exposed to a magnetic field. The present investigation aims to analyse the behaviour of a tool holder when attached with a magnetorheological damper during the turning operation using analytical and experimental methods. A Mathematical model was developed and the amplitudes of the tool vibration and chip thickness were calculated. Cutting experiments were conducted to study the effect of the magnetorheological damper on tool vibration, chip thickness etc. and to validate the results of the proposed mathematical model. From the results, it was observed that the use of the magnetorheological damper reduces tool vibration effectively and its results matches the results obtained from the numerical method.

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“…The flexible workpiece which is supported only at one end undergoes elastic deformation reducing allowable depth of cut in the process [17]. Sekar et al [18] considered the effects of deflections of a tailstock-supported workpiece and presented a compliant 2DoF dynamic cutting force model by considering the relative motion of the workpiece with the cutting tool. It was found that when a slender and flexible workpiece is being cut, the critical chip width at higher speeds is considerably larger than a rigid workpiece.…”

Section: Introductionmentioning

confidence: 99%