Identification of machine–tool–workpiece system dynamics

Tounsi, Nejah; Otho, Alain

doi:10.1016/s0890-6955(99)00123-6

Cited by 31 publications

(18 citation statements)

References 4 publications

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“…Cutting force characteristics in both the feed and the radial directions are shown in Fig. 4 and accordance with the force profile as given in [7,8]. The forces have three components namely, an impulse and a saw tooth components resulting form vibration of the tool after being subject to the impact (both at the spindle rotational frequency), in addition to a random part resulting form the stochastic nature of the cutting process.…”

Section: Results and Analysissupporting

confidence: 63%

“…The characteristics of the cutting forces resulting from interrupted cutting are obtained form references [7,8]. The values are modified to represent worst-case scenario where parts with higher hardness are to be machined.…”

Section: Results and Analysismentioning

confidence: 99%

“…Theoretical and experimental data on the stability of the interrupted cutting process was presented by Mann et al [5,6] for the purpose of improving surface quality and prevent chatter or instability in machining processes. Tounsi and Otho [7,8] have explored the effect of machine tool vibration on the surface quality and the interaction of the machine tool-workpiece in a Greek letters ς damping ratio of filter ω f natural frequency of filter (rad/s) Subscripts f feed direction fF feed direction-transmitted force fS feed direction-structure r radial direction rF radial direction-transmitted force rS radial direction-structure milling process. They have presented valuable information on the nature of cutting process and shown that the process is random in nature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Suppressing vibrations of machining processes in both feed and radial directions using an optimal control strategy: The case of interrupted cutting

Al-Zaharnah

2006

Journal of Materials Processing Technology

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Section: Results and Analysissupporting

confidence: 63%

Section: Results and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Suppressing vibrations of machining processes in both feed and radial directions using an optimal control strategy: The case of interrupted cutting

Al-Zaharnah

2006

Journal of Materials Processing Technology

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“…3 Views of modified friction device adapted on a hydraulic machine from one to three applied force components after the use of correction functions. These correction functions have to be built in taking into account the dynamic behavior of the load sensor in order to clean up the strain gauges recordings or piezoelectric dynamometer recordings [19][20][21]. The goal is to deduce accurately the cutting forces applied on the tools.…”

Section: Force Measurement For Other Applicationsmentioning

confidence: 99%

A Device Enhancement for the Dry Sliding Friction Coefficient Measurement Between Steel 1080 and VascoMax with Respect to Surface Roughness Changes

et al. 2010

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An enhancement of an existing tribometer device developed by Philippon et al. (Wear 257:777-784, 2004) is presented in this work. This experimental device is made up of a dynamometer ring and a specific load sensor allowing to apply an apparent normal force on specimens and to measure frictional forces respectively. A set of strain gauges are added to the upgraded dynamometer ring in this new configuration. The apparent normal force can be recorded accurately during the sliding process. The setup is adapted on a hydraulic testing machine to carry out steel-on-steel dry sliding tests. The first set of standard Steel on standard Steel specimens (XC 38 French standard steel) with two apparent normal pressures are imposed (8 and 80 MPa) as the range of sliding velocities varies from 0.12 to 3.72 m/s for the same contact conditions. The main set of experiments with low sliding velocities (varying from 0 to 3 m/s) for the Steel 1080 on Steel VascoMax are performed in the same tested setup. The recordings of normal and tangential forces leading to the friction coefficient determination are discussed. The values of dry friction coefficient μ according to the experimental parameters are in good agreement with those observed in the literature. Using this new configuration, the effects of the sliding velocity on the surface roughness changes and on the dry fiction coefficient are also investigated. Additionally the surface roughness changes are also investigated. Performing the scans with use of the scanning electron microscope in particular locations of the specimens show the roughness decrease and reveal the occurrence of the wear phenomenon. Moreover, very interesting relations between wear and sliding velocity are observed.

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“…Tounsi and Otho [15] employed a method to indentify the machine-tool-workpiece system dynamics due to cutting force variations. Tounsi et al [16,17] verified the probability of piezoelectric dynamometer measurements of dynamic cutting force.…”

Section: Introductionmentioning

confidence: 99%

Cutting force models for Fe–Al-based coating processed by a compound NC machine tool

Sun

Zhang

Zhang³

et al. 2015

Int J Adv Manuf Technol

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The arc-spraying Fe-Al-based coating cutting process is a spindle-tool-workpiece vibration system dependent upon the machine tool's dynamic performance, cutting tool vibration, the coarse coating surface and its thin cutting depth. To investigate the cutting force, this research indicates the coating cutting fundamental mechanics; furthermore, it represents two cutting steps and cutting force models in the machining process avoiding an analysis of the natural vibration parameters of the machine tool itself. In the first cutting step, there is a transient cutting force due to forced vibration of the rough surface; the second cutting step has a steady machining feature based on the first cutting surface and the reduced hardness of the inhomogeneous region. According to the different characteristics of each cutting step, this research presents dynamic cutting calculation models including cutting parameters, tool vibration and cutting depth effects in the first cutting step. A steady cutting model is based on three cutting parameters including cutting velocity, cutting feed and cutting depth. Piezoelectric force and acceleration sensors were used to obtain accurate experimental data. Then, response surface methodology (RSM) and the principle of least squares estimation of polynomial regression (PLSEPR) were applied to analyse the resultant cutting data. The results showed that cutting force calculation models were suitable for the coating machining.

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Identification of machine–tool–workpiece system dynamics

Cited by 31 publications

References 4 publications

Suppressing vibrations of machining processes in both feed and radial directions using an optimal control strategy: The case of interrupted cutting

Suppressing vibrations of machining processes in both feed and radial directions using an optimal control strategy: The case of interrupted cutting

A Device Enhancement for the Dry Sliding Friction Coefficient Measurement Between Steel 1080 and VascoMax with Respect to Surface Roughness Changes

Cutting force models for Fe–Al-based coating processed by a compound NC machine tool

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