Stability analysis of modulated tool path turning

Ryan Copenhaver; Tony Schmitz; Scott Smith

doi:10.1016/j.cirp.2018.03.010

Stability analysis of modulated tool path turning

Ryan Copenhaver, Tony Schmitz, Scott Smith

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

A new periodic sampling-based method for identifying the stability of modulated tool path turning (MTP) is presented. A metric is defined that provides a numerical value to indicate stability; it is nominally zero for forced vibration and large for self-excited vibration. Tests were performed using ASM 6061-T6 aluminum tubes with varying wall thicknesses to control stability, where MTP was applied to create discrete chips by superimposing sinusoidal oscillation in the feed direction. Results are compared for the new periodic sampling metric and the traditional frequency-domain approach, where the frequency spectrum is analyzed to identify the chatter frequency (should it exist).

Original language	English
Pages (from-to)	49-52
Number of pages	4
Journal	CIRP Annals - Manufacturing Technology
Volume	67
Issue number	1
DOIs	https://doi.org/10.1016/j.cirp.2018.03.010
State	Published - Jan 1 2018
Externally published	Yes

Funding

The authors gratefully acknowledge financial support from the UNC Charlotte Center for Precision Metrology Affiliates .

Funders	Funder number
University of North Carolina

Keywords

Chatter
Dynamics
Turning

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10.1016/j.cirp.2018.03.010

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title = "Stability analysis of modulated tool path turning",

abstract = "A new periodic sampling-based method for identifying the stability of modulated tool path turning (MTP) is presented. A metric is defined that provides a numerical value to indicate stability; it is nominally zero for forced vibration and large for self-excited vibration. Tests were performed using ASM 6061-T6 aluminum tubes with varying wall thicknesses to control stability, where MTP was applied to create discrete chips by superimposing sinusoidal oscillation in the feed direction. Results are compared for the new periodic sampling metric and the traditional frequency-domain approach, where the frequency spectrum is analyzed to identify the chatter frequency (should it exist).",

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AB - A new periodic sampling-based method for identifying the stability of modulated tool path turning (MTP) is presented. A metric is defined that provides a numerical value to indicate stability; it is nominally zero for forced vibration and large for self-excited vibration. Tests were performed using ASM 6061-T6 aluminum tubes with varying wall thicknesses to control stability, where MTP was applied to create discrete chips by superimposing sinusoidal oscillation in the feed direction. Results are compared for the new periodic sampling metric and the traditional frequency-domain approach, where the frequency spectrum is analyzed to identify the chatter frequency (should it exist).

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Stability analysis of modulated tool path turning

Abstract

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Keywords

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