Phenomenological study of chip flow/formation and unified cutting force modelling during Ti6Al4V alloy turning operations
Article dans une revue avec comité de lecture
Mechanistic approach for prediction of cutting forces are showing limits when it comes to enhance the cutting force modelling for specific applications of high-value added and thin parts, which are made of difficult-to-cut materials such as titanium alloys. This is the reason why precise cutting force modelling is needed in order to avoid deflection during machining. Therefore, this contribution aims to improve the description of the chip formation in cutting force modelling thanks to an original experimental set-up built up to observe in-situ the chip flow and measure the cutting forces during Ti6Al4V turning. This study highlights the fact that the chip flow direction has a significant effect on cutting forces and can be influenced by several parameters. In view of the results obtained, a generalised chip flow direction model is suggested. Chips morphology observation is also conducted with the purpose of providing experimental observations physical meaning. Afterwards, a cutting force model is proposed which takes into account the chip flow direction influence.
Showing items related by title, author, creator and subject.
Mechanistic cutting force model including the stress state induced by the chip flow contribution for cylindrical turning on Ti6Al4V alloy with two different nose radii Communication avec acteForce modelling is a major research topic in machining. Several approaches are used to face with the different needs. Mechanistic models appear to be an easier and rapid way for computing cutting forces; nevertheless they ...
Investigations on the flank wear and modelling of the contact radius effect in turning of Ti6Al4V titanium alloy Communication avec acteBONO, Aurélie; COSTES, Jean-Philippe; FROMENTIN, Guillaume; KARAOUNI, Habib; DORLIN, Théo (Elsevier, 2016)Machining of difficult-to-cut materials like Ti6Al4V titanium alloy leads to significant flank wear on the cutting tool. In order to ensure the respect of final part specifications, flank wear has to be controlled. In ...
Characterization of the clamping and internal residual stresses effects on the distortion of Inconel 718 parts resulting from turning Communication avec acteRANCHIN, Lucas; VIPREY, Fabien; FROMENTIN, GUILLAUME; LORONG, Philippe; KARAOUNI, Habib; DORLIN, Théo; MONTEIRO, Eric (SSRN, 2023-12-11)The understanding of phenomena related to machining processesintheaerospace industry isstill the subject of study intheresearch community. This is due to the constrained geometric tolerances to ensure optimal performance ...
Article dans une revue avec comité de lectureTOUBHANS, Bastien; FROMENTIN, Guillaume; KARAOUNI, Habib; DORLIN, Théo; VIPREY, Fabien (Society of Manufacturing Engineers, 2020)Machining thin workpieces is a challenging task as geometrical errors may result from the combination of several phenomena. Among these, elastic workpiece deformation and machining induced residual stresses may be predominant ...
Machinability of inconel 718 during turning: Cutting force model considering tool wear, influence on surface integrity Article dans une revue avec comité de lectureTOUBHANS, Bastien; FROMENTIN, Guillaume; KARAOUNI, Habib; DORLIN, Théo; VIPREY, Fabien (Elsevier, 2020)Machining accuracy can be compromised by elastic workpiece deformation and subsurface residual stress introduction during cutting. In order to anticipate the impact of cutting forces and surface integrity evolutions on ...