Design, development and testing of a turning dynamometer for cutting force measurement

Yaldız, Süleyman; Ünsaçar, Faruk

doi:10.1016/j.matdes.2005.04.001

Cited by 52 publications

(24 citation statements)

References 5 publications

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“…On the other hand, for the original dynamometer devices made up of four hexagonal rings fixed rigidly between two plates [13][14][15][16] designed for milling and turning processes investigation, the cross-sensitivity measured during a static calibration was smaller than 2% and often close to 1%. It allows the independent determination of the three force components [13][14][15] and of the torque component [16]. Figure 8 shows the average deformation ε yy where the strain gauges n o 1 and n o 2 are located when a static load F C is applied only on the side of gauge n o 1.…”

Section: Cross-sensitivitymentioning

confidence: 99%

“…The total cutting force is calculated by processing of both values. The dynamometer using four elastic octagonal rings held between two rigid plates is initially designed for the force measurement in milling application [13] but can be used for other machining operations such as turning and milling [14,15]. The output signals delivered by 16 strain gauges mounted on the rings allowed, after calibration, the measurement of three static force components during the metal cutting process.…”

Section: Force Measurement For Other Applicationsmentioning

confidence: 99%

“…The use of 20 strain gauges provides the torque value for the milling operations [16]. In addition, a piezo-electric accelerometer completed the data acquisition setup and evaluated dynamic force components [14][15][16]. This dynamometer was subjected to different tests to characterize its static and dynamic responses.…”

Section: Force Measurement For Other Applicationsmentioning

confidence: 99%

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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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Section: Cross-sensitivitymentioning

confidence: 99%

Section: Force Measurement For Other Applicationsmentioning

confidence: 99%

Section: Force Measurement For Other Applicationsmentioning

confidence: 99%

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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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“…The static study aims at characterizing the static equivalent stiffness values in order to identify the three dimensional elastic behaviour of the machining system. Generally, the static tests consist in charging by known efforts the two blocks and measuring only the associated displacements components [17,39]. Here, also the static tests consist in loading by known efforts the two blocks but measuring the small displacements torsor (i.e.…”

Section: Static Characterization Of Machining Systemmentioning

confidence: 99%

New method to characterize a machining system: application in turning

et al. 2009

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Many studies simulates the machining process by using a single degree of freedom spring-mass sytem to model the tool stiffness, or the workpiece stiffness, or the unit tool-workpiece stiffness in modelings 2D. Others impose the tool action, or use more or less complex modelings of the efforts applied by the tool taking account the tool geometry. Thus, all these models remain two-dimensional or sometimes partially three-dimensional. This paper aims at developing an experimental method allowing to determine accurately the real three-dimensional behaviour of a machining system (machine tool, cutting tool, tool-holder and associated system of force metrology six-component dynamometer). In the work-space model of machining, a new experimental procedure is implemented to determine the machining system elastic behaviour. An experimental study of machining system is presented. We propose a machining system static characterization. A decomposition in two distinct blocks of the system "Workpiece-Tool-Machine" is realized. The block Tool and the block Workpiece are studied and characterized separately by matrix stiffness and displacement (three translations and three rotations). The Castigliano's theory allows us to calculate the total stiffness matrix and the total displacement matrix. A stiffness center point and a plan of tool tip static displacement are presented in agreement with the turning machining dynamic model and especially during the self induced vibration. These results are necessary to have a good three-dimensional machining system dynamic characterization

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“…The cutting force signals have been monitored to examine the cutting performance in the turning process [4][5][6]. It is proved that the in-process surface roughness can be predicted well in CNC turning process by using the ratio of dynamic cutting forces [7].…”

Section: Introductionmentioning

confidence: 99%

In-Process Prediction of Straightness in CNC Turning by Using Wavelet Transform

Sassantiwong¹,

Tangjitsitcharoen²

2015

Proceedings of the 2nd International Conference on Green Materials and Environmental Engineering

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Abstract-The aim of this research is to monitor the dynamic cutting forces in CNC turning process in order to investigate the relation between the straightness and the dynamic cutting forces. The dynamic cutting forces occurred during the CNC turning process include the straightness and noise signals. The Daubechies wavelet transform is applied to identify those signals into different levels due to the different frequencies. The experimentally obtained results showed that the dynamic cutting forces can be used to predict the straightness under various cutting conditions in the further research by utilizing the wavelet transform.

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Design, development and testing of a turning dynamometer for cutting force measurement

Cited by 52 publications

References 5 publications

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

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

New method to characterize a machining system: application in turning

In-Process Prediction of Straightness in CNC Turning by Using Wavelet Transform

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