An equivalent geometry model for turning tool with nose and edge radii

Khlifi, Hassen; Abdellaoui, Lefi; Saï, Wassila Bouzid

doi:10.1007/s00170-019-03787-y

Cited by 15 publications

(6 citation statements)

References 28 publications

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“…Endres and Waldorf [8] introduced a nonlinear relationship among the unit friction, cutting force and the chip thickness by considering the size effect of rounded edge on the tool nose. Khlifi et al [9]. applied an equivalent tool geometry method to induce the same cutting force components as the real tool while taking into account the radius of the tool nose and edge.…”

Section: Introductionmentioning

confidence: 99%

Analytical prediction of cutting forces in cylindrical turning of 304 stainless steel using unequal division shear zone theory

Zhang

2022

Int J Adv Manuf Technol

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In order to establish a more accurate prediction model of turning forces, this paper proposed an analytical model for cylindrical turning with the consideration of the effect of the main cutting edge angle and the nose radius. Meanwhile, the unequal division shear zone theory in orthogonal free cutting is extended and applied to the oblique non-free cutting in the interaction between the chip units. To take into account the real tool nose geometry, the engaged part in the rounded nose is discretized into a set of cutting edge units. The geometrical parameters associated with the cutting edge units are analysed by using the coordinate transformation approach. Then, the improved oblique cutting model is developed for each cutting edge unit to acquire the component forces along the tool rake face. Finally, the resultant cutting forces in the turning process are calculated by the numerical integration method. To verify the effectiveness of the proposed model, the turning force experiment of 304 stainless steel was carried out by changing the cutting conditions, the main edge cutting angle and the nose radius. Through the comparative analysis between the measured results and the calculation values of the proposed model, it was found that the analytical prediction of cutting force is in good agreement with the experiment.

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Section: Introductionmentioning

confidence: 99%

Analytical prediction of cutting forces in cylindrical turning of 304 stainless steel using unequal division shear zone theory

Zhang

2022

Int J Adv Manuf Technol

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“…The equivalent geometry is defined while conserving the same uncut chip area and values of the cutting force components compared to real cutting geometry [15].…”

Section: Equivalent Cutting For Turning Processmentioning

confidence: 99%

“…In the present research work, equivalent parameters are defined using the work of Khlifi et al [15].…”

Section: Equivalent Cutting For Turning Processmentioning

confidence: 99%

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Prediction of turning performances using an equivalent oblique cutting model

Abdellaoui

Khlifi

Saï

2022

Int J Adv Manuf Technol

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The main purpose of this paper is to predict the performances of the turning process using an equivalent oblique cutting model. Based on the real tool, an equivalent cut geometry is performed considering the effects of nose and edge radii. Edge direction and normal cutting angles, uncut chip thickness and depth of cut were redefined by their equivalent values and then used as new inputs.Turning performances, such as cutting force components, cutting temperatures and tribology parameters at the tool/chip interface, were predicted over a wide range of cutting conditions. The position of the maximum temperature at the tool/chip interface and its value are determined by solving the heat equation in the chip using the Finite Difference Method (FDM). Different assumptions were concluded, and the thermal problem is simply resolved using Laplace transform.Acceptable agreement was concluded between experimental cutting force components and those predicted from the equivalent oblique cutting model. It can thus be concluded that the equivalent model of cut is highly recommended to predict turning performances and to study crater wear and tool life.

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“…For example, Bushlya et al proposed the chip area and tool geometry models when oblique turning with round tools [27]. Khlifi et al modeled the turning process by the equivalent cutting-edge, which theoretically induced the same CF components as the real tool [28]. And Orra and 2…”

Section: Introductionmentioning

confidence: 99%

Modeling and Optimizing the Effects of Insert Angles on Hard Turning Performance

Duc

Dai

Giang

2021

Mathematical Problems in Engineering

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To analyze hard turning performance characteristics, a new mathematical model was developed for the hard turning process, and cutting force (CF), another important response for cutting machining, was also studied in the present work. The analysis of the mathematical model and experimental results revealed that thrust force (Fy) was the largest, followed by tangential force (Fz) and feed force (Fx). The resultant CF was most influenced by inclination angle (IA) with 25.02%, followed by rake angle (RA) (14.26%) and cutting edge angle (CEA) (10.04%). Increasing CEA changed the position of cutting on the tool-nose radius and increased local negative RA and correspondingly local clearance angle (CA). Meanwhile, increasing negative RA and IA resulted in larger local negative RA and CA. Moreover, local RA and local CA were the main geometric factors affecting surface roughness (SR), tool wear (TW), and CF. Increasing local negative RA resulted in higher SR and CF. In contrast, increasing local CA resulted in lower SR, TW, and CF. Under specific conditions, the positive effects of the local CA overcame the negative effects of the local negative RA, leading to a simultaneous decrease in SR and TW. The proposed novel mathematical model can be further applied to calculate local CF, cutting temperature, and TW for each cutting-edge element, to analyze and optimize the hard turning process.

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An equivalent geometry model for turning tool with nose and edge radii

Cited by 15 publications

References 28 publications

Analytical prediction of cutting forces in cylindrical turning of 304 stainless steel using unequal division shear zone theory

Analytical prediction of cutting forces in cylindrical turning of 304 stainless steel using unequal division shear zone theory

Prediction of turning performances using an equivalent oblique cutting model

Modeling and Optimizing the Effects of Insert Angles on Hard Turning Performance

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