Analytical modelling of material removal process in the case of orthogonal cutting and worn tools

2017 ◽  
Vol 19 (6) ◽  
pp. 570
Author(s):  
Tarek Mabrouki ◽  
Hédi Hamdi ◽  
Ferdinando Salvatore
Keyword(s):  
Material Removal ◽  
Orthogonal Cutting ◽  
Analytical Modelling ◽  
Removal Process

scholarly journals Analytical modelling of cutting forces in near-orthogonal cutting of titanium alloy Ti6Al4V

2014 ◽  
Vol 229 (6) ◽  
pp. 1122-1133 ◽  
Author(s):  
Yun Chen ◽  
Huaizhong Li ◽  
Jun Wang
Keyword(s):  
Titanium Alloy ◽  
Cutting Forces ◽  
Chemical Reactivity ◽  
Orthogonal Cutting ◽  
Chip Thickness ◽  
Analytical Modelling ◽  
Shear Instability ◽  
Published Data ◽  
Machining Processes ◽  
Titanium Alloy Ti6al4v

Titanium and its alloys are difficult to machine due to their high chemical reactivity with tool materials and low thermal conductivity. Chip segmentation caused by the thermoplastic instability is always observed in titanium machining processes, which leads to varied cutting forces and chip thickness, etc. This paper presents an analytical modelling approach for cutting forces in near-orthogonal cutting of titanium alloy Ti6Al4V. The catastrophic shear instability in the primary shear plane is assumed as a semi-static process. An analytical approach is used to evaluate chip thicknesses and forces in the near-orthogonal cutting process. The shear flow stress of the material is modelled by using the Johnson–Cook constitutive material law where the strain hardening, strain rate sensitivity and thermal softening behaviours are coupled. The thermal equations with non-uniform heat partitions along the tool–chip interface are solved by a finite difference method. The model prediction is verified with experimental data, where a good agreement in terms of the average cutting forces and chip thickness is shown. A comparison of the predicted temperatures with published data obtained by using the finite element method is also presented.

scholarly journals Observation of Material Removal Process by Single Discharge in Air Gap

Procedia CIRP ◽  
2018 ◽  
Vol 68 ◽  
pp. 276-279 ◽  
Author(s):  
Tani Takayuki ◽  
Yoshiki Tsujita ◽  
Hiromitsu Gotoh ◽  
Masaaki Okada ◽  
Naotake Mohri
Keyword(s):  
Material Removal ◽  
Air Gap ◽  
Removal Process ◽  
Single Discharge

Analytical Model of Chip Formation in Case of Orthogonal Cutting Processes

2011 ◽  
Vol 223 ◽  
pp. 101-110
Author(s):  
Ferdinando Salvatore ◽  
Tarek Mabrouki ◽  
Hédi Hamdi
Keyword(s):  
Analytical Model ◽  
Chip Formation ◽  
Material Removal ◽  
Orthogonal Cutting ◽  
Element Model ◽  
Analytical Methodology ◽  
Decomposition Approach ◽  
Industrial Community ◽  
Applied Forces ◽  
Cutting Processes

The present work deals with the presentation of analytical methodology allowing the modeling of chip formation. For that a “decomposition approach”, based on assuming that the material removal is the summation of two contributions, ploughing and pure cut was adopted. Moreover, this analytical model was calibrated by a finite element model and experimental data in terms of temperature and applied forces evolutions. The global aim is to propose to the industrial community, an efficient rapid-execution analytical model concerning the material removal in the case of an orthogonal cutting process.

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