Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry

High-productivity machining processes cause tool and material defects and even damages in machine spindles. The onset of self-excited vibration, known as chatter, limits this high material removal rate. This chatter vibration refers to machining instability during cutting processes, which results in...

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Main Author:	A. R., Yusoff
Format:	Article
Language:	English
Published:	Elsevier Ltd 2016
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/16875/ http://umpir.ump.edu.my/id/eprint/16875/ http://umpir.ump.edu.my/id/eprint/16875/ http://umpir.ump.edu.my/id/eprint/16875/1/fkp-2016-razlan-Identifying%20bifurcation%20behavior1.pdf

id	ump-16875
recordtype	eprints
spelling	ump-168752018-12-03T03:12:26Z http://umpir.ump.edu.my/id/eprint/16875/ Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry A. R., Yusoff TJ Mechanical engineering and machinery High-productivity machining processes cause tool and material defects and even damages in machine spindles. The onset of self-excited vibration, known as chatter, limits this high material removal rate. This chatter vibration refers to machining instability during cutting processes, which results in bifurcation behavior or nonlinear effect wherein the tool and the workpiece are not engaged with each other. In particular, bifurcation for low-radial immersion conditions can be easily promoted and identified. In this study, an experiment on an irregular milling tool as a variable helix and variable pitch geometry was conducted under a flexible workpiece condition. The bifurcation behavior from regenerative chatter was identified and quantified from displacement sensor and inductive sensor measurements. A series of cutting tests was used to measure the vibration signals, which were then analyzed based on the frequency spectrum, the one-per-revolution effect, and the Poincaré section. According to results, Hopf bifurcation and period-one bifurcation instabilities apparently occurred to validate chatter stability prediction through a semi-discretization method. However, period-doubling bifurcation was only determined during the unstable cutting of a uniform tool that was not in variable helix/pitch or an irregular milling tool. An irregular tool geometry caused the modulation of the regenerative effect to suppress chatter, and period-doubling instability could not be exhibited during cutting as a regular tool behavior. This period-one chatter instability of an irregular milling tool should be identified and avoided by practitioners to achieve high productivity in machining using the aforementioned irregular milling tools. Elsevier Ltd 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/16875/1/fkp-2016-razlan-Identifying%20bifurcation%20behavior1.pdf A. R., Yusoff (2016) Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry. Measurement, 93. pp. 57-66. ISSN 0263-2241 http://dx.doi.org/10.1016/j.measurement.2016.07.001 doi: 10.1016/j.measurement.2016.07.001
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery A. R., Yusoff Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry
description	High-productivity machining processes cause tool and material defects and even damages in machine spindles. The onset of self-excited vibration, known as chatter, limits this high material removal rate. This chatter vibration refers to machining instability during cutting processes, which results in bifurcation behavior or nonlinear effect wherein the tool and the workpiece are not engaged with each other. In particular, bifurcation for low-radial immersion conditions can be easily promoted and identified. In this study, an experiment on an irregular milling tool as a variable helix and variable pitch geometry was conducted under a flexible workpiece condition. The bifurcation behavior from regenerative chatter was identified and quantified from displacement sensor and inductive sensor measurements. A series of cutting tests was used to measure the vibration signals, which were then analyzed based on the frequency spectrum, the one-per-revolution effect, and the Poincaré section. According to results, Hopf bifurcation and period-one bifurcation instabilities apparently occurred to validate chatter stability prediction through a semi-discretization method. However, period-doubling bifurcation was only determined during the unstable cutting of a uniform tool that was not in variable helix/pitch or an irregular milling tool. An irregular tool geometry caused the modulation of the regenerative effect to suppress chatter, and period-doubling instability could not be exhibited during cutting as a regular tool behavior. This period-one chatter instability of an irregular milling tool should be identified and avoided by practitioners to achieve high productivity in machining using the aforementioned irregular milling tools.
format	Article
author	A. R., Yusoff
author_facet	A. R., Yusoff
author_sort	A. R., Yusoff
title	Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry
title_short	Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry
title_full	Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry
title_fullStr	Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry
title_full_unstemmed	Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry
title_sort	identifying bifurcation behavior during machining process for an irregular milling tool geometry
publisher	Elsevier Ltd
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/16875/ http://umpir.ump.edu.my/id/eprint/16875/ http://umpir.ump.edu.my/id/eprint/16875/ http://umpir.ump.edu.my/id/eprint/16875/1/fkp-2016-razlan-Identifying%20bifurcation%20behavior1.pdf
first_indexed	2023-09-18T22:22:55Z
last_indexed	2023-09-18T22:22:55Z
_version_	1777415776391659520

Identifying Bifurcation Behavior during Machining Process for an Irregular Milling Tool Geometry

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