Chatter classification by entropy functions and morphological processing in cylindrical traverse grinding

Fu, Jachih; Troy, Carol; Mori, Kazuo

doi:10.1016/0141-6359(95)00052-6

Cited by 10 publications

(6 citation statements)

References 6 publications

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“…Moreover, it was reported by Eu et al [43] that the chatter spectral pattems is dominated by the lowest workpiece natural frequencies. Therefore, the following analysis only considers the first mode of the workpiece for simplicity.…”

Section: Equivalent Dynamical Modelmentioning

confidence: 94%

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Yan¹,

2013

Journal of Manufacturing Science and Engineering

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This paper utilizes an effective control str-ategy to suppress the regenerative chatter in a plunge-grinding process. To begin with, the dynamical interaction between the workpiece and the grinding wheel is considered as a major factor influencing the grinding stability. Mathematically, the grinding stability is studied through numerical eigenvalue analysis. Consequently, critical chatter boundaries are obtained to distinguish the chatter-free and the chatter regions. As known, the grinding is unstable and the chatter happens in the chatter region. To observe the chatter vibrations, an analytical method and numerical simulations are employed. As a result, chatter vibrations both with and without losing contact between the wor'kpiece and the wheel are obtained. Meanwhile, the coexistence of the chatter and the stable grinding is also found in the chatter-free region. Finally, a control strategy involving spindle speed variation (SSV) is introduced to suppress the chatter. Then, its effectiveness is analytically investigated in terms of the method of multiple scales (MMS).

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Section: Equivalent Dynamical Modelmentioning

confidence: 94%

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Yan¹,

2013

Journal of Manufacturing Science and Engineering

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“…(8) onto the concerned workpiece mode. In [38], Fu reported that the grinding chatter only involves the lowest modes of the workpiece. Then, it was summarized by Altintas and Weck [2] that chatter occurs at the low frequency modes of the machining structure.…”

Section: Static Displacementmentioning

confidence: 99%

Non-linear analysis and quench control of chatter in plunge grinding

Yan

Wiercigroch

2015

International Journal of Non-Linear Mechanics

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“…Investigations carried out by Fu [9] and Altintas and Weck [1] show that the grinding chatter only involves the lowest modes of the workpiece. When the grinding wheel is located near the centre of the workpiece, the chatter frequency is dominated by the primary mode of the workpiece.…”

Section: Dde Modelmentioning

confidence: 99%

Regenerative chatter in self-interrupted plunge grinding

Yan

Wiercigroch

2016

Meccanica

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This paper investigates dynamics of regenerative chatter in self-interrupted plunge grinding with delayed differential equations (DDEs) and partial differential equations (PDEs). The DDEBIF-TOOL, a numerical simulation tool and the method of multiple scales are used to analyse stability and construct bifurcation diagrams. It was found out that in majority of cases, chatter is accompanied by a loss of contact. The loss of contact leaves uncut surface during the pass of grinding wheels, and thus the regeneration mechanism does not play a role. In that case, the delay used to represent the time span between two successive cuts should be multiple (double, triple, quadruple or higher). As a consequence, the chatter with losing contact cannot be accurately described by the DDEs with a fixed time delay. To address this problem, the PDEs are introduced to record the variation of workpiece profile. The PDEs are transformed into the ODEs by a Galerkin projection, and then the grinding dynamics is studied numerically. Solutions obtained from the DDEs and the PDEs are in a good agreement for a continuous grinding but there is a discrepancy for a self-interrupted cutting.

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Chatter classification by entropy functions and morphological processing in cylindrical traverse grinding

Cited by 10 publications

References 6 publications

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Non-linear analysis and quench control of chatter in plunge grinding

Regenerative chatter in self-interrupted plunge grinding

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