An analytical force model for orthogonal elliptical vibration cutting technique

Zhang, Xinquan; Kumar, Annamalai Senthil; Rahman, Mustafizur; Nath, Chandra; Liu, Kui

doi:10.1016/j.jmapro.2012.05.006

Cited by 76 publications

(44 citation statements)

References 13 publications

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“…However, this conclusion has a little bit different to Zhang et al [21]; they that thought the shear angle increased by 2λ. But, from experimental investigations, the difference of λ should be more reasonable.…”

Section: Transient Shear Anglementioning

confidence: 59%

“…Zhang et al [21] obtained that the resultant force should be rotated by 2λ in a single EVC cycle; i.e., the shear angle changes by 2λ from conventional kinetic friction zone to reverse kinetic friction zone. Therefore, the shear angle φ kr in reverse kinetic friction zone approaches to 90°considering the value of initial shear angle φ kc and friction angle λ in CC.…”

Section: Transient Shear Anglementioning

confidence: 99%

“…Shamoto [20] developed analytical models of 3-D EVC with thin shear plane model which assumed that the angle of shear direction and transient resultant is invariably 45°during the cutting period. Zhang [21] further developed this view; an analytical force model was proposed and used the maximum shear stress principle. However, the shear stress in primary shear zone and friction angle in tool-chip interface needs to be determined from the experimental results of the CC test.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and modeling of force in orthogonal elliptical vibration cutting

Bai

Sun

Gao

et al. 2015

Int J Adv Manuf Technol

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This paper aims to reveal the material removal mechanisms of the elliptical vibration cutting (EVC) and present the predicted model of orthogonal cutting force. Further study of mechanism will be helpful to explain the phenomena that EVC can reduce the cutting force, lower cutting temperature, and improve the surface integrity. In each overlapping EVC cycle, almost all the parameters are time-varying, of which two important factors are focused: (i) transient thickness of cut and (ii) transient shear angle. The analysis model simplified the complex process of the EVC as conventional cutting (CC) which considering two transient variables. This paper presents a non-equidistant shear zone model to predict the shear angle, tool-chip friction angle, and shear stress in CC under the same conditions of the EVC. Then, the transient thickness of cut and transient shear angle are investigated. Thus, an analytical model of the force in EVC is proposed. The model is available to predict the cutting force of the EVC accurately without any experimental parameters in CC. In addition, experimental results available in the literature are conducted for comparison, which are in well agreement with the analysis model

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Section: Transient Shear Anglementioning

confidence: 59%

Section: Transient Shear Anglementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis and modeling of force in orthogonal elliptical vibration cutting

Bai

Sun

Gao

et al. 2015

Int J Adv Manuf Technol

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“…One of the earliest works by Shamoto and Moriwaki (1994) said disadvantage of elliptical vibratory machining. Recently, analytical models were developed for ultrasonically assisted oblique turning (Nategh et al, 2012) and 2D vibrational assisted turning (Zhang et al, 2012) to investigate the benefit of this novel machining process.…”

mentioning

confidence: 99%

Analysis of a free machining α+β titanium alloy using conventional and ultrasonically assisted turning

Muhammad

Hussain

Maurotto

et al. 2014

Journal of Materials Processing Technology

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• This is the author's version of a work that was accepted for publication in the Journal of Materials Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.A definitive version was subsequently pub- enhanced machinability generating short chips during metal cutting, which prevents entanglement with cutting tools improving productivity. To further enhance the machinability of this material, a novel hybrid machining technique called ultrasonically assisted turning (UAT) was used. Experimental investigations were carried out to study the machinability, chip shapes, cutting forces, temperature in the process zone and surface roughness for conventional and ultrasonically assisted turning of both alloys. UAT shows improved machinability with reduced nominal cutting forces, improved surface roughness of the machined workpiece and generation of shorter chips when compared to conventional machining conditions.

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“…Even though these studies are successful in determining the quasistatic machining load, the vibration of cutters and workpieces is ignored. To compensate the shortages of this type of modeling method, some other works emphasized on synthesizing physical phenomena, mainly vibrations, into modeling process by considering dynamic load caused by system vibration [24]. For better load calculation, a real-time updated machined surface that is formed by cutter motions was also used in the modeling [25].…”

Section: Introductionmentioning

confidence: 99%

Vibrations of Flat‐End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments

Luo

2018

Shock and Vibration

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During all the machining process, the milling cutter has to enter the workpiece either from the boundary or from the machined/unmachined surface, due to the change of machining sequence/cutter or the variation of cutting depth. Unlike the stable cutting process, the contact between cutter and machined workpiece changes significantly in the entering process, resulting in vibration and leaving marks on the machined surface. Aiming at in-depth understanding the mechanism of this phenomenon, this paper presents a novel time-domain simulation model to predict the dynamic response of the cutter during the entering process. Two typical entering conditions, including entering from the workpiece boundary and from the machined surface along the cycle path, are modeled based on the dynamic cutting force calculation by considering dynamic undeformed chip thickness created by consequential teeth engagement. en, it is synthesized with the time-varying immersion angle and exit angle of cutter teeth in the entering process to simulate the dynamic cutting forces and cutter vibrations. To validate the developed model, eight conditions in boundary entering and six conditions in cycle path entering are carried out by comparing the collected data and the predicted results. Results show that the developed model could precisely predict the dynamic cutting forces and cutter vibration, especially the forces and displacements under the varied cutter-workpiece contact.

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An analytical force model for orthogonal elliptical vibration cutting technique

Cited by 76 publications

References 13 publications

Analysis and modeling of force in orthogonal elliptical vibration cutting

Analysis and modeling of force in orthogonal elliptical vibration cutting

Analysis of a free machining α+β titanium alloy using conventional and ultrasonically assisted turning

Vibrations of Flat‐End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments

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