Torsional Vibration Effects in Grinding?

Mannan, MA; Drew, S.J.; Stone, Brian; Wager, J.G.

doi:10.1016/s0007-8506(07)62939-4

Cited by 14 publications

(7 citation statements)

References 18 publications

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“…A considerable amount of research work describes different methods, such as statistical threshold values calculated from fluctuations of normal grinding force and AE [7,8]. In addition, tangential normal force variations were also proved to indicate torsional vibrations of the wheel and/or workpiece spindle, with significant influence on chatter generation [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Analytical and numerical models of the grinding process were developed to determine the effects of structural dynamics, contact stiffness and wheel flexibility on chatter suppression [13,14]. Other studies demonstrate that different types of grinding wheel technologies with lower contact stiffness and controlled variation of grinding wheel and/or workpiece rotational speed are effective for chatter suppression [11,15].…”

Section: Introductionmentioning

confidence: 99%

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Experimental analysis of wheel/workpiece dynamic interactions in grinding

2008

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental analysis of wheel/workpiece dynamic interactions in grinding

2008

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“…The active methods of chatter counteract were also considered for the other machining processes [12][13][14]. The authors of publications [15][16][17][18][19][20][21] analyzed similar issues for grinding. However, the approach they took consisted mainly in the flexible torsional support of the workpiece that resulted in time-varying rotational speed of the workpiece caused by the torsional compliance of the grinding process system.…”

Section: Introductionmentioning

confidence: 99%

Experimental oscillation-assisted cylindrical plunge grinding

Pawłowski

Kępczak

Bechciński

et al. 2021

Journal of Manufacturing Science and Engineering

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The paper presents experimental studies of the influence of amplitude, frequency, time of oscillation and average value of the rotational speed of the workpiece on the waviness of the ground surface during cylindrical outer diameter plunge grinding on a mass-produced cylindrical grinder. Oscillations were introduced in order to counteract the development of self-excited vibrations during spark-out. The waviness of the surface was determined by a laser distance measurement system. The results of the experiments indicate the important positive influence of the oscillations applied during spark-out on the waviness of the ground surface. The conclusions of the study regarding the process as well as technology of cylindrical plunge grinding are presented.

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“…Moreover, in [5], it is seen that the frictional force plays a very significant role, which can be even larger than the cutting. Therefore, due to the tangential ploughing and frictional force, unlike that in turning or milling, it was discussed by Mannan et al [19] that torsional vibration must be considered when investigation of grinding chatter. Then, Hesterman and Stone [9] proposed an improved kinematic model for simulation of the grinding chatter, which confirmed that the torsional motion can affect the stability of plunge grinding.…”

Section: Introductionmentioning

confidence: 99%

Regenerative and frictional chatter in plunge grinding

Yan

Wiercigroch

2016

Nonlinear Dyn

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This paper studies self-excited vibrations, regenerative and frictional chatters, in a plunge grinding process. In consideration of lateral and torsional workpiece movements, a dynamic model with four degrees of freedom is proposed, which involves statedependent time delays and Stribeck effect for regenerative and frictional effects, respectively. With this model, by linearising contact angle, regenerative grinding depth, frictional velocity and the state-dependent delays, eigenvalue analysis yields stability diagrams for the grinding, where boundaries for both regenerative and frictional instabilities are determined. Then, near the boundaries, simulations and bifurcation analyses are performed to reveal patterns of chatter onset. Bifurcation diagrams show coexistence of stable grinding and the regenerative chatter near the regenerative boundary, and a sudden switch between the stable and the frictionally unstable on the frictional boundary. Moreover, simulation results also show various dynamical properties in the grinding chatters, such as effect of losing contact and stick-slip motion.

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Torsional Vibration Effects in Grinding?

Cited by 14 publications

References 18 publications

Experimental analysis of wheel/workpiece dynamic interactions in grinding

Experimental analysis of wheel/workpiece dynamic interactions in grinding

Experimental oscillation-assisted cylindrical plunge grinding

Regenerative and frictional chatter in plunge grinding

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