Force coefficients identification considering inclination angle for ball-end finish milling

Cao, Qingyuan; Zhao, Jun; Han, Shiguo; Chen, Xiaoxiao

doi:10.1016/j.precisioneng.2011.10.007

Cited by 42 publications

(7 citation statements)

References 11 publications

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“…Coefficients obtained using the mechanics of cutting are more versatile, since they can be applied to any different tool geometry thanks to the orthogonal to oblique transformation; nevertheless some relevant approximations are included in this approach. On the other hand, there are different options to obtain specific cutting coefficients from experimental results; among them, the most common are based on average force measurement per revolution in slot milling tests [5,9], but other methods based on simulation and instantaneous forces [10][11][12] have been presented in addition. In instantaneous approaches, force coefficients are identified using an inverse method by fitting simulated and measured forces in time domain.…”

Section: Introductionmentioning

confidence: 99%

Speed-varying cutting force coefficient identification in milling

Grossi

Sallese

Scippa

et al. 2015

Precision Engineering

104

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a b s t r a c tAccurate simulation of the machining process is crucial to improve milling performance, especially in High-Speed Milling, where cutting parameters are pushed to the limit.Various milling critical issues can be analyzed based on accurate prediction of cutting forces, such as chatter stability, dimensional error and surface finish. Cutting force models are based on coefficients that could change with spindle speed. The evaluation of these specific coefficients at higher speed is challenging due to the frequency bandwidth of commercial force sensors. On account of this, coefficients are generally evaluated at low speed and then employed in models for different spindle speeds, possibly reducing accuracy of results.In this paper a deep investigation of cutting force coefficient at different spindle speeds has been carried out, analyzing a wide range of spindle speeds: to overcome transducer dynamics issues, dynamometer signals have been compensated thanks to an improved technique based on Kalman filter estimator. Two different coefficients identification methods have been implemented: the traditional average force method and a proposed instantaneous method based on genetic algorithm and capable of estimating cutting coefficients and tool run-out at the same time.Results show that instantaneous method is more accurate and efficient compared to the average one. On the other hand, the average method does not require compensation since it is based on average signals. Furthermore a significant change of coefficients over spindle speed is highlighted, suggesting that speed-varying coefficient should be useful to improve reliability of simulated forces.

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Section: Introductionmentioning

confidence: 99%

Speed-varying cutting force coefficient identification in milling

Grossi

Sallese

Scippa

et al. 2015

Precision Engineering

104

View full text Add to dashboard Cite

show abstract

“…However, the thrust forces (F z ) decreased when the tool orientation angle was at 80° compared to 90°. In the case of ball mill cutting tool, the cutting force decreases and then increases with the increment of tilting angle [8]. It is suggested that the bottom part of the tools which does not have cutting edge contribute to high thrust force.…”

Section: Methodsmentioning

confidence: 99%

Laser Assisted Micro-Groove Ball Milling of Ti6Al4V

Mohid

Warap

Ibrahim

et al. 2014

AMM

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In micro scale, the size of cutting tool and shape significantly contributed to the machining performance. Many studies have been done to improve the cutting tool life and machined surface quality. Problems could become more severe when the workpiece has a low thermal conductivity while having high level of ductility such as titanium alloy. In this study, micro ball mill cutting tool is selected to produce a linear groove on a titanium alloy plate. The process is integrated with a laser source as a pre-heating element on the work piece surface. The condition of the flank surface of the tools and cutting force were observed and discussed. The influence of tool orientation and laser heating parameters in laser assisted micro ball milling (LAMM) were also discussed. It was found out that adhesion is the dominant tool wear mechanism thus fluctuate the cutting force value.Introduction.

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“…In order to calculate the cutting forces, the edge-specific coefficients and the shearspecific coefficients need to be obtained beforehand, which are determined by materials and geometry of tool and workpiece. In the research, proposed by Cao et al, these coefficients are obtained from the experiments using the planar surfaces [23]. The coefficients can be calculated by…”

Section: Cutting Coefficients Modelmentioning

confidence: 99%

Research on Cutting Force of Turn-Milling Based on Thin-Walled Blade

Zhu

Liu

Wang

et al. 2016

Advances in Materials Science and Engineering

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Turn-milling is regarded as the milling of a curved surface while rotating the workpiece around its center point, which combines effectively the advantages of both turning and milling, wherein it allows for good metal removal with the difficult-to-cut thin-walled workpieces in aviation. The objective of the present work is to study cutting force by turn-milling in cutting condition. Aiming at the deformation properties of thin-walled blade, the predicted models of rigid cutting force and flexible cutting force with ball cutter are provided, respectively, in turn-milling process. The deformation values of blade and cutter are calculated, respectively, based on the engaged trajectory by using the iterative algorithm. The rigid and flexible cutting forces are compared and the influence degrees of cutting parameters on cutting forces are analyzed. These conclusions provide theoretical foundation and reference for turn-milling mechanism research.

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Force coefficients identification considering inclination angle for ball-end finish milling

Cited by 42 publications

References 11 publications

Speed-varying cutting force coefficient identification in milling

Speed-varying cutting force coefficient identification in milling

Laser Assisted Micro-Groove Ball Milling of Ti6Al4V

Research on Cutting Force of Turn-Milling Based on Thin-Walled Blade

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