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Research Papers

Dynamic Model of Oscillation-Assisted Cylindrical Plunge Grinding With Chatter

[+] Author and Article Information
Witold Pawłowski

Institute of Machine Tools
and Production Engineering,
Lodz University of Technology,
Stefanowskiego 15,
Lodz 90-924, Poland
e-mail: witold.pawlowski@p.lodz.pl

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received February 20, 2013; final manuscript received June 5, 2013; published online September 11, 2013. Assoc. Editor: Tony Schmitz.

J. Manuf. Sci. Eng 135(5), 051010 (Sep 11, 2013) (6 pages) Paper No: MANU-13-1071; doi: 10.1115/1.4024819 History: Received February 20, 2013; Revised June 05, 2013

In this paper, the mathematical model of the oscillation-assisted cylindrical plunge grinding process has been presented. In this model, the dynamical properties of the grinder, self-excited vibration (regenerative chatter), and nonlinear behavior of the grinding force have been taken into consideration. This mathematical model has been applied to analyze both formation and development of chatter on the workpiece and the grinding wheel surface during oscillation-assisted cylindrical plunge grinding. The frequency response function (FRF), describing dynamical properties of the grinder, has been determined by means of modal experiment. The model has been implemented in matlab-simulink environment in order to perform simulations. The results of the simulations confirmed the antiregenerative properties of the oscillations of the workpiece rotational movement during cylindrical plunge grinding.

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Figures

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Fig. 1

The cylindrical plunge grinding process

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Fig. 2

Block diagram of the simulation program of plunge cylindrical grinding

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Fig. 3

The resultant depth of grinding ae(t) without oscillations

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Fig. 4

The circumferential speed of the workpiece vw (t) with oscillations

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Fig. 5

The resultant depth of grinding ae(t) with oscillations

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