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TECHNICAL PAPERS

Analytical Modeling of Chatter Stability in Turning and Boring Operations—Part II: Experimental Verification

[+] Author and Article Information
Emre Ozlu

Faculty of Engineering and Natural Sciences,  Sabanci University, Orhanli, Tuzla 34956, Istanbul, Turkey

Erhan Budak

Faculty of Engineering and Natural Sciences,  Sabanci University, Orhanli, Tuzla 34956, Istanbul, Turkeyebudak@sabanciuniv.edu

J. Manuf. Sci. Eng. 129(4), 733-739 (Mar 14, 2007) (7 pages) doi:10.1115/1.2738119 History: Received June 01, 2006; Revised March 14, 2007

In this part of the paper series, chatter experiments are conducted in order to verify the proposed stability models presented in the first part (Ozlu, E., and Budak, E., 2007, ASME J. Manuf. Sci. Eng.,129(4), pp. 726–732). Turning and boring chatter experiments are conducted for the cases where the tool or the workpiece is the most flexible component of the cutting system. In addition, chatter experiments demonstrating the effect of the insert nose radius on the stability limit are presented. Satisfactory agreement is observed between the analytical predictions and the experimental results.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

(a,b) modal test setup and (c,d) frequency measurement setup

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Figure 2

Triangular inserts used during tests with radii: (a)0.4mm, (b)0.8mm, (c)1.2mm, and (d) the round insert with a 12.6mmdia; (e) regular insert seat and (f) ground insert seat for desired rake and inclination

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Figure 3

(a) Transfer functions of the tool and the workpiece, (b) chatter frequency measurement result at 2000rpm experiments, and (c) chatter test results for model verification and the surface finish of a stable versus unstable cut

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Figure 4

Chatter test results for nose radius effect demonstration and verification

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Figure 5

Chatter test results for round nose insert

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Figure 6

(a) Transfer functions of the tool and the workpiece, (b) chatter sound measurement results for 1400rpm tests, and (c) chatter test results for model verification and the surface finish of a stable versus unstable cut

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Figure 7

Chatter test results for the flexible workpiece case with inserts having different nose radii

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Figure 8

Chatter test results for boring model verification and the surface finish of a stable versus unstable cut

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