Evaluation of high-speed end-milling dynamic stability through audio signal measurements

Weingaertner, Walter Lindolfo; Schroeter, Rolf Bertrand; Polli, Milton Luiz; Gomes, Jefferson de Oliveira

doi:10.1016/j.jmatprotec.2006.03.075

Cited by 37 publications

(23 citation statements)

References 8 publications

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“…A sound signal has also been used by [23] in the turning process and by [24] in monitoring the milling process. The authors of [25] also use signals to evaluate cutting process stability. Moreover, [26] describes the use of ultrasonics to monitor tool wear during the turning process, but there has been no report about such a use in milling.…”

Section: Introductionmentioning

confidence: 99%

Monitoring the condition of the cutting tool using self-powering wireless sensor technologies

Ostaševičius

Jurenas

Augutis

et al. 2016

Int J Adv Manuf Technol

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An effective system for monitoring the wear of the machine tool inserts could significantly contribute to saving costs in manufacturing. One of the most recent and popular of effective monitoring methods revolves around the use of sensing technologies for indirect estimation of tool wear. The sensory information is difficult to collect from machine tools due to the extremely poor signal-to-noise ratio of the relevant tool wear-related information because the milling operation is of interrupted nature since the work piece is in contact with the tool edge several times per second. Another issue is the varying thickness of the chip during the penetration of the work piece. Yet, many challenges still impede the practical application of this method for industrial environment. Therefore, the paper presents a method that could solve these challenges especially in industrial environment. The proposed selfpowered wireless sensor node is integrated in the structure of the cutting tool. The voltage generated from the cutting tool vibrations of the harvester exponentially rises when the capacitor is fully charged and wireless signal sent to the receiver. As the intensity of energy accumulation depends on the state of the cutting tool wear, it indicates and detects the tool condition. The proposed technique could be useful for the identification of the cutting tool quality and the relative tool-work piece position. The information about the variation of tool wear is beneficial for helping the manufacturers to control the cutting process, to minimize the product cost as well as to improve the machining quality and efficiency.

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Section: Introductionmentioning

confidence: 99%

Monitoring the condition of the cutting tool using self-powering wireless sensor technologies

Ostaševičius

Jurenas

Augutis

et al. 2016

Int J Adv Manuf Technol

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show abstract

“…In their studies, they simulated different forms of naturally occurring wear such as crater, notch and flank wear, local changes in rake angle and edge breakdown. Weingaertner et al [12] evaluated the influence of high speed end milling dynamic stability through audio signal measurements both experimentally and analytically. In the study, the stability evaluation was based on the workpiece surface finish and on the audio signals measured with a unidirectional microphone.…”

Section: Introductionmentioning

confidence: 99%

Determination of Surface Qualities on Inclined Surface Machining with Acoustic Sound Pressure

Gok

2012

SV-JME

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“…In most of the researches, the FRF of the system at the tool point is obtained by impact modal tests performed on the stationary spindle [13][14][15][16]. Spindle models, however, have rarely been considered in the machining simulation models.…”

Section: Introductionmentioning

confidence: 99%

Study of milling stability with Hertz contact stiffness of ball bearings

2010

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This present work examines the stability and nonlinear responses of a spindle milling system supported by ball bearings. A shaft finite element based on Timoshenko beam theory is employed to model the spindle, and modal reduction method is therefore adopted for saving the numerical calculating time. The issues of evaluating the effects of the ball bearing Hertz contact stiffness are consequently addressed. It is found that suitable constant bearing stiffness can be adopted to replace the nonlinear nonsmooth Hertz stiffness in prediction of the critical cutting depth of the milling system in certain bearing configuration conditions. For the constant bearing stiffness can be obtained by experiment, this replacement will undoubtedly simplify the spindle-bearing milling system. But with the increase in the bearing clearance, the spindle milling system will present obvious nonlinear behaviors, and the nonlinear Hertz contact bearing stiffness will take over. Isolated islands of chatter vibration, which are induced by the nonlinear nonsmooth bearing Hertz stiffness, can be found exist in milling processes in large bearing clearance conditions.

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Evaluation of high-speed end-milling dynamic stability through audio signal measurements

Cited by 37 publications

References 8 publications

Monitoring the condition of the cutting tool using self-powering wireless sensor technologies

Monitoring the condition of the cutting tool using self-powering wireless sensor technologies

Determination of Surface Qualities on Inclined Surface Machining with Acoustic Sound Pressure

Study of milling stability with Hertz contact stiffness of ball bearings

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