Slip-line modeling of built-up edge formation in machining

Fang, Ning; Dewhurst, P.

doi:10.1016/j.ijmecsci.2005.02.008

Cited by 59 publications

(25 citation statements)

References 29 publications

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“…It has been shown that during dry titanium machining, a BUL first forms on the rake face, which then gives rise to BUE formation at the tool tip [14]. In the literature, the influence of stable BUE has been considered in analytical models of machining such as Waldorf et al [20], Fang and Dewhurst [21], and Karpat [22]. The number of studies that simulate BUE in finite element based models is limited [23].…”

Section: Introductionmentioning

confidence: 99%

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Oliaei

2016

Int J Adv Manuf Technol

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In micromachining, the uncut chip thickness is less than the cutting tool edge radius, which results in a large negative effective rake angle. Depending on the material properties, this large negative rake angle promotes built-up edge (BUE) formation. A stable BUE acts like a cutting edge and affects the mechanics of the process. The size of the BUE increases with increasing uncut chip thickness and cutting speed. It also creates a positive rake angle, but it decreases the clearance angle of the tool. A method of including BUE formation in finite element simulations is to use sticking friction conditions at the tip of the tool. However, this approach is shown to be insufficient to simulate BUE formation in microscale machining. Therefore, the cutting edge is modified with the experimental BUE size in the finite element simulations based on experimental measurements. The influence of friction models between BUE and the work material has been investigated, and the study identifies friction coefficients that yield good agreements with experimental results. The finite element model is shown to be capable of simulating process forces and chip shapes for uncut chip thickness values larger than minimum uncut chip thickness.

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Section: Introductionmentioning

confidence: 99%

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Oliaei

2016

Int J Adv Manuf Technol

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“…Fang's (2002) model took into account the tool-chip contact on the tool primary and secondary rake faces and at the chip-groove backwall. Fang and Dewhurst (2005) developed a model to fully take into consideration the builtup edge formation and chip-up curling effect. Nevertheless there is not a specific formulation obtained for metal cutting with negative rake angle tool in any of these models.…”

Section: The Slip Line Modelmentioning

confidence: 99%

Slip-line metal cutting model with negative rake angle

Ozturk¹,

Altan²

2012

J. Braz. Soc. Mech. Sci. & Eng.

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“…However, the elongation of Ti-5-5-5-3 alloy is equal to 2%. Works conducted by Fang and Dewhurst (2005) have proved that the built-up edge apparition can be closely related to the temperatures and slip stress on the tool-chip interface. We have shown that machining Ti-5-5-5-3 alloy leads to sliding force higher.…”

Section: Wear Of Toolsmentioning

confidence: 99%

Experimental study of coated carbide tools behaviour: application for Ti-5-5-5-3 turning

Wagner¹,

Baili²,

Dessein³

et al. 2011

IJMMM

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. Abstract: The goal of this paper is to study the relation between the input data (conditions and geometry of cut) and answers (wear of tool, forces and cutting temperatures) when machining the Ti-5-5-5-3 alloy treated. This study has shown that the cutting process is different and that the slip forces are preponderates. Compared with other materials, the specific cutting pressure is higher and does not vary according to the cutting speed but depend on feed rate. Moreover, both edge preparation and feed rate have an influence on cutting force direction. Besides, cutting temperatures are high and almost similar to those provided by high speed machining with low cutting speed. Finally, we have shown that failure modes are different from those obtained when machining other titanium alloys. Built-up edge is the most deteriorating phenomenon and no flank wear was met in our study context. Keywords:Ti-5-5-5-3; cutting force; cutting temperature; cutting conditions; tool geometry; wear.Reference to this paper should be made as follows: Wagner, V., Baili, M., Dessein, G. and Lallement, D. (2011) 'Experimental study of coated carbide tools behaviour: application for Ti-5-5-5-3 turning', Int. J. Machining and Machinability of Materials, Vol. 9, Nos. 3/4, pp.233-248.Biographical notes: Vincent Wagner is an Associate Professor which is presently preparing his PhD work at the Laboratory Genus of Production, France. His researches are focused on cutting force model and cutting temperature. He works also on increasing of titanium alloys machinability.Maher Baili is an Assistant Professor of Mechanical Design and Production in the National Tarbes Engineering School. His research topics are machining of hard-to-cut materials, cutting forces modelling and surface integrity.Gilles Dessein is an Assistant Professor of Production in the National Tarbes Engineering School. His research topics are high performance machining and CAD-CAM. His current research focuses on stability and dynamics of milling process, solution against thin walled part vibrations, surface integrity and machining of hard-to-cut materials.Daniel Lallement works as an Engineer in the Department of Manufacturing Engineering at the Bidos Center, Messier Dowty. His actual topic is the analyses of Ti-5-5-5-3 cutting specificities, in order to develop better tools and improve a global process that will ensure optimised productivity gains.

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Slip-line modeling of built-up edge formation in machining

Cited by 59 publications

References 29 publications

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Slip-line metal cutting model with negative rake angle

Experimental study of coated carbide tools behaviour: application for Ti-5-5-5-3 turning

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