Identification of motion of cutting tool vibration in a continuous boring operation—correlation to structural properties

Andrén, Linus; Håkansson, Lars; Brandt, Anders; Claesson, Ingvar

doi:10.1016/j.ymssp.2003.09.009

Cited by 34 publications

(17 citation statements)

References 15 publications

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“…A time series approach was used by Andrén et al [7] to investigate boring bar chatter and the results were compared with an analytical Euler-Bernoulli model. Also, Euler-Bernoulli beam modeling, experimental modal analysis and operating deflection shape analysis were used by Andrén et al [14] to investigate the dynamic properties of a clamped boring bar. Results obtained demonstrate observable differences concerning the fundamental bending modes.…”

Section: Henrikåkesson Tatiana Smirnova Thomas Lagö and Lars Håkanssonmentioning

confidence: 99%

Analysis of dynamic properties of boring bars concerning different clamping conditions

Åkesson

Smirnova

Håkansson

2009

Mechanical Systems and Signal Processing

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The boring bar is one of the most widely used type of tool holders in metal cutting operations. The turning process subjects the tool to vibrations, and cutting in deep workpiece cavities is likely to result in high vibration levels. The consequences of such vibration levels generally results in: reduced tool life, poor surface finishing and disturbing sound. Internal turning frequently requires a long and slender boring bar in order to machine inside a cavity, and the vibrations generally become highly correlated with one of the fundamental bending modes of the boring bar. Different methods can be applied to reduce the vibrations, the implementation of the most efficient and stable methods require in depth knowledge concerning the dynamic properties of the tooling system. Furthermore, the interface between the boring bar and the clamping house has a significant influence on the dynamic properties of the clamped boring bar. This report focuses on the dynamic properties of a boring bar that arise under different clamping conditions of the boring bar and are introduced by a clamping house (commonly used in the manufacturing industry). The dynamic properties of a boring bar (for different cases of boundary condition of the boring bar) are presented partly analytically but also experimentally.

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Section: Henrikåkesson Tatiana Smirnova Thomas Lagö and Lars Håkanssonmentioning

confidence: 99%

Analysis of dynamic properties of boring bars concerning different clamping conditions

Åkesson

Smirnova

Håkansson

2009

Mechanical Systems and Signal Processing

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“…The first reason for this is the fact that the Euler-Bernoulli beam model considers the clamping condition rigid while the clamping applied by clamping bolts in an actual bar fixture is not infinitely rigid. Secondly, since the Euler-Bernoulli beam model ignores the effects of shear deformation and rotary inertia, the boring bar Eigen frequencies will be slightly overestimated [12,13]. In order to compensate for the flexibility in the clamping condition, and thereby correlate the natural frequency of the Euler-Bernoulli beam model with that of an actual boring bar, a method similar to the one proposed by Andren et al [12] is employed.…”

Section: Modified Euler-bernoulli Beam Equationmentioning

confidence: 99%

“…Secondly, since the Euler-Bernoulli beam model ignores the effects of shear deformation and rotary inertia, the boring bar Eigen frequencies will be slightly overestimated [12,13]. In order to compensate for the flexibility in the clamping condition, and thereby correlate the natural frequency of the Euler-Bernoulli beam model with that of an actual boring bar, a method similar to the one proposed by Andren et al [12] is employed. For this, the theoretical bar should be considered longer than the actual boring bar.…”

Section: Modified Euler-bernoulli Beam Equationmentioning

confidence: 99%

Dynamic simulation of boring process

Imani

Yussefian

2009

International Journal of Machine Tools and Manufacture

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“…In machining setup with high cutting forces machining vibrations will be increased and long lasing of tool wear will also be decreased. Andern et al investigated tool vibration in boring process and introduced tool shape modes via modal analysis [1]. Skelton made the vibration of tool vertically and also in direction of workpiece with a transducer [2].…”

Section: Introductionmentioning

confidence: 99%

The Effect Tool Geometry on Resonance Phenomenon in Turning Process

Mahdavinejad

Khajeafzali

2012

Journal for Manufacturing Science and Production

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The determination and optimization of applied forces on cutting tool is usually one of the most important subject to determine the tool's long lasting and break horse power of machine tool. In This research the effect of rake angle and cutting depth on the force applied to cutting tool in turning process is analyzed via the investigation of forces in their frequency domain. From This point of view, the applied forces to cutting tool are experimentally measured in three directions via dynamometer. After that, the spectrum frequencies of these forces are analyzed with Fourier transformation. Finally, the effect of machining parameters on resonance phenomenon is investigated via the determination of natural frequency of cutting tool. Due to the variations of tool geometry and machining parameters based on the dynamic behavior, the forces can be controlled with resonance phenomenon and also reduction in brake horsepower.

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Identification of motion of cutting tool vibration in a continuous boring operation—correlation to structural properties

Cited by 34 publications

References 15 publications

Analysis of dynamic properties of boring bars concerning different clamping conditions

Analysis of dynamic properties of boring bars concerning different clamping conditions

Dynamic simulation of boring process

The Effect Tool Geometry on Resonance Phenomenon in Turning Process

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