An investigation of the deformation in orthogonal cutting

Bitans, K.; Brown, R. H.

doi:10.1016/0020-7357(65)90023-5

Cited by 42 publications

(15 citation statements)

References 7 publications

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“…This assumption has been experimentally observed by Shaw (2005) over a wide range of cutting conditions. Bitans and Brown (1965) explained that the shear zone has a finite thickness, which reinforces the assumption of an equivalent shear plane as displayed in figure 5. Thomsen et al (1965) depicted the compressive and shear stress state to be constant in the shear plane if its curvature is small enough.…”

Section: Stresses and Strains In Chip Formationmentioning

confidence: 50%

“…Their relation has the same form and differs from Merchant (1944) by the parameter A 2 equal to unity. Several studies carried out by Thomsen et al (1965);Molinari and Moufki (2008); Moufki et al (1998) have proved that the relation of Zvorykin (1893) is in better agreement with different coefficients than those published by Merchant (1944) and Lee and Shaffer (1951), even in the case of thick plastic zones (Bitans and Brown, 1965). According to Shaw (2005), a dimensional analysis reveals the shear angle as a function of both normal rake angle γ n and friction angle β.…”

Section: Shear Angle Predictionmentioning

confidence: 91%

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From large-scale to micromachining: A review of force prediction models

Germain

Fromentin

Poulachon

et al. 2013

Journal of Manufacturing Processes

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractIn this paper, a review of work performed in the area of force modelling in metal cutting processes is presented. Past and present trends are described and criticised to compare their relevance with current requirements. Several approaches are reviewed, such as empirical, mechanistic and analytical models. The models' ability to predict forces, from rough machining to finish machining, is analysed.

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Section: Stresses and Strains In Chip Formationmentioning

confidence: 50%

Section: Shear Angle Predictionmentioning

confidence: 91%

From large-scale to micromachining: A review of force prediction models

Germain

Fromentin

Poulachon

et al. 2013

Journal of Manufacturing Processes

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“…Unlike other techniques [16,17,21,22] the EBL technique does not damage the surface of the specimens and therefore does not create any stress concentrations which might interfere with the material deformation during the chip formation. Moreover, using the EBL technique it is possible to produce microgrids with very fine pitches that are not achievable with scratching [16,17], embossing [21,22] or even photo resist methods [23][24][25].…”

Section: Discussionmentioning

confidence: 99%

“…Bitans and Brown [16] studied the nature of material flow and shear plane angle during orthogonal cutting of a wax specimen using cast grids with a pith of 380µm. Childs [17] and Leopold and co-workers [18][19][20] used microgrids in combination with a visioplasticity technique to study flow patterns and velocity fields during orthogonal cutting.…”

Section: Introductionmentioning

confidence: 99%

Determination of micro-scale plastic strain caused by orthogonal cutting

Ghadbeigi

Bradbury

Pinna

et al. 2008

International Journal of Machine Tools and Manufacture

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Abstract:An Electron Beam Lithography technique has been used to produce microgrids in order to measure local plastic strains, induced during an orthogonal cutting process, at the microscopic scale in the shear zone and under the machined surface. Microgrids with a 10 µm pitch and a line width less than 1µm have been printed on the polished surface of an aluminium alloy AA5182 to test the applicability of the technique in metal cutting operations. Orthogonal cutting tests were carried out at 40 mm/sec. Results show that the distortion of the grids could successfully be used to compute plastic strains due to orthogonal cutting with higher accuracy compared to other techniques reported in the literature. Strain maps of the machined specimens have been produced and show high strain gradients very close to the machined surface with local values reaching 2.2. High resolution strain measurements carried out in the primary deformation zone also provide new insight into the material deformation during the chip formation process.

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“…Ploughing has also been examined for its own contribution to cutting forces [Bitans 1965;Johnson 1967;AbdelMoneim 1974;Sarwar 1981;Rubenstein 1990;Zhang 1991;Endres 1995;Wang 2002] and its relationship to worn tool flank forces [Usui 1984;Elanayar 1994].…”

Section: Introductionmentioning

confidence: 99%

A Simplified Model for Ploughing Forces in Turning

Waldorf

2006

Journal of Manufacturing Processes

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This paper aims to provide experimental data in support of a modified theoretical model for quantifying the effect of cutting tool edge geometry on machining forces. A previously published slip-line model is simplified and extended to the case of turning. Several sets of machining experiments were run with customfabricated cutting inserts of varying edge hone radius and chamfer geometry. Cutting forces were measured using a dynamometer during cutting.Results show that varying edge geometry can have a major effect on cutting forces.The developed model effectively captures the edge phenomenon and its effect on cutting forces and also offers a glimpse of how the edge geometry can affect dynamic process damping.

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An investigation of the deformation in orthogonal cutting

Cited by 42 publications

References 7 publications

From large-scale to micromachining: A review of force prediction models

From large-scale to micromachining: A review of force prediction models

Determination of micro-scale plastic strain caused by orthogonal cutting

A Simplified Model for Ploughing Forces in Turning

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