Evaluation of on-machine measuring method for dynamic stiffness of thin-walled workpieces

Umezu, Takuma; Kono, Daisuke; Matsubara, Atsushi

doi:10.1016/j.procir.2018.08.204

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…The differences of the natural frequency are 10 Hz in the bending mode and 50 Hz in the torsional mode. Further investigation revealed that this natural frequency difference appears because the mass of the tip of the piezoelectric actuator acts as an additional mass [19]. A larger equivalent mass of a workpiece results in a smaller natural frequency difference.…”

Section: Comparison Of Compliancementioning

confidence: 97%

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On-machine measurement method for dynamic stiffness of thin-walled workpieces

Kono

Umezu

2019

Precision Engineering

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Section: Comparison Of Compliancementioning

confidence: 97%

“…The on-machine measurement of the dynamic stiffness of thin-walled workpieces using the conventional shaker method has been studied in our previous work [19]. The previous work investigated the influence of the shaker mass on measurement result.…”

Section: Introductionmentioning

confidence: 99%

On-machine measurement method for dynamic stiffness of thin-walled workpieces

Kono

Umezu

2019

Precision Engineering

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“…An experimental based study provides a systematic measurement of process response parameters, videlicet the cutting force and surface roughness [13], dynamic stiffness measuring methods [14]. In addition, a special attention is paid to the system identification, signal, modal analysis, vibration absorption [15][16][17][18] using the frame structures as a test rig for numerical identification techniques.…”

Section: Literature Reviewmentioning

confidence: 99%

Deflections and Frequency Analysis in the Milling of Thin-Walled Parts With Variable Low Stiffness

et al. 2019

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The disadvantage of the geometry of thin-walled parts, in terms of processing, is the low ability to resist static and dynamic loads. It is caused by the elastic deformation of elements with a low stiffness. Modelling approaches for the evaluation of deflections during machining are presented. Mathematical models of deflections, cutting forces and harmonic response are proposed. The processes of material removal and deflection of a thin-walled sample at the critical points are modelled. A frequency analysis was performed, consisting of a modal analysis of natural frequencies and a harmonic response analysis. As a result, a graph of the deflections amplitude from the frequency of driven harmonic oscillations is generated. The analysis of the obtained values was performed. As a result, the resonance frequency and maximum amplitude of oscillations for the operating parameters are determined.

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