A novel triaxial optoelectronic based dynamometer for machining processes

Subasi, Omer; Yazgi, Sertac Guneri; Lazoğlu, İsmail

doi:10.1016/j.sna.2018.06.019

Cited by 20 publications

(12 citation statements)

References 15 publications

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“…The papers mentioned previously [59][60][61] state the importance for a cost-efficient alternative to the force sensing systems. Dynamometers provide mostly accurate cutting force measurements, that can be obtained very quickly when compared to the numerical-analytical methods, which, in turn, enables the faster analysis/optimization of a machining process.…”

Section: Creation Of New Methods and Modelsmentioning

confidence: 99%

“…There are some recent developments on dynamometer types, such as a novel triaxial optoelectronic-based dynamometer presented in the Subasi’s work [ 59 ], in which the authors describe the development of a compact and triaxial dynamometer which uses photo-interrupters. This dynamometer can detect forces in three orthogonal dimensions and presented as an alternative to current dynamometers, being a compact and relatively low-cost solution.…”

Section: Literature Reviewmentioning

confidence: 99%

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Cutting Forces Assessment in CNC Machining Processes: A Critical Review

Sousa

Silva

Fecheira

et al. 2020

Sensors

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Machining processes remain an unavoidable technique in the production of high-precision parts. Tool behavior is of the utmost importance in machining productivity and costs. Tool performance can be assessed by the roughness left on the machined surfaces, as well as of the forces developed during the process. There are various techniques to determine these cutting forces, such as cutting force prediction or measurement, using dynamometers and other sensor systems. This technique has often been used by numerous researchers in this area. This paper aims to give a review of the different techniques and devices for measuring the forces developed for machining processes, allowing a quick perception of the advantages and limitations of each technique, through the literature research carried out, using recently published works.

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Section: Creation Of New Methods and Modelsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Cutting Forces Assessment in CNC Machining Processes: A Critical Review

Sousa

Silva

Fecheira

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…In the literature, studies are presented concerning the design of dynamometers for milling operations (Korkut, 2003;Rizal et al, 2015;Subasi et al, 2018). Also, analytical finite element methods for computing thrust force and torque are used by Strenkowski et al (2004), Yang and Sun (2009), and Gok et al (2015).…”

Section: Introductionmentioning

confidence: 99%

Experimental measurement of the cutting forces and wear of the drill in processing X17CrNi16-2 martensitic stainless steel

et al. 2021

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Abstract. For the optimum setup of an industrial manufacturing process, it can be important to know the drilling forces and moments. In many cases, theoretical estimates are not accurate enough, especially when dealing with new materials, and experimental measurements are mandatory. This paper presents the design of a dynamometer comprising a one-spoked wheel elastic component to measure the drilling thrust force and the drilling moment. A finite element analysis was made, using Ansys software, to find the most favorable position for the strain gauges. One set of strain gauges was bonded to spokes to determine the torque, and a second set was bonded to the other two spokes to quantify the axial thrust force. After dynamometer manufacturing, a calibration operation is achieved, and tests are performed by measuring the drilling forces, thrust, and torque on American Iron and Steel Institute (AISI) 1020 steel. The analogue signals from the gauges were recorded using a computer with a data acquisition device. Tool wear is studied, and the results are presented in the paper. A good agreement between results from the literature and computations demonstrates the efficiency and accuracy of this measuring instrument.

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“…sensitivity issues such as those affecting dynamometers based on strain gauges [ 5 ], capacitance sensors [ 6 ], optical sensors [ 7 , 8 , 9 ] and other sensors requiring large structural deformations at the inspected point in order to achieve a satisfactory signal to noise ratio; this is typically obtained by weakening the machining system, thus reducing the resonance frequency;…”

Section: Introductionmentioning

confidence: 99%

“…• sensitivity issues such as those affecting dynamometers based on strain gauges [5], capacitance sensors [6], optical sensors [7][8][9] and other sensors requiring large structural deformations at the inspected point in order to achieve a satisfactory signal to noise ratio; this is typically obtained by weakening the machining system, thus reducing the resonance frequency; • load effects such as those introduced by rotating dynamometers [10,11] that may drastically reduce the first resonance frequency of the machine tool spindle (below 500 Hz) with respect to the unaltered configuration where no sensor (thus neither additional modal mass nor additional flexibility) is integrated into the machining system; and • dynamic inertial disturbances deriving from the undesired but unavoidable oscillations of the modal mass placed in front of the piezoelectric load cells in case of plateform dynamometers; by so doing, even low-frequency vibration modes of the machine tool table where the dynamometer is clamped may cause undesired force fluctuations that cannot be avoided, as explained in [12].…”

Section: Introductionmentioning

confidence: 99%

Upgraded Kalman Filtering of Cutting Forces in Milling

Totis

Dombóvári

Sortino

2020

Sensors

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Advanced piezoelectric dynamometers with a wide frequency bandwidth are required for cutting force measurement in high-speed milling and micromilling applications. In many applications, the signal bandwidth is limited by the dynamic response of the mechanical system, thus compensation techniques are necessary. The most effective compensation techniques for a full 3D force correction require an accurate and complex identification phase. Extended Kalman filtering is a better alternative for input force estimation in the presence of unknown dynamic disturbances. The maximum bandwidth that can be currently achievable by Kalman filtering is approximately 2 kHz, due to crosstalk disturbances and complex dynamometer’s dynamics. In this work, a novel upgraded Kalman filter based on a more general model of dynamometer dynamics is conceived, by also taking into account the influence of the force application point. By so doing, it was possible to extend the frequency bandwidth of the device up to more than 5 kHz along the main directions and up to more than 3 kHz along the transverse directions, outperforming state-of-the-art methods based on Kalman filtering.

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A novel triaxial optoelectronic based dynamometer for machining processes

Cited by 20 publications

References 15 publications

Cutting Forces Assessment in CNC Machining Processes: A Critical Review

Cutting Forces Assessment in CNC Machining Processes: A Critical Review

Experimental measurement of the cutting forces and wear of the drill in processing X17CrNi16-2 martensitic stainless steel

Upgraded Kalman Filtering of Cutting Forces in Milling

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