Fundamental study of exit burr formation mechanisms during orthogonal cutting of AlSi aluminium alloy
TypeArticles dans des revues avec comité de lecture
Burr formation during machining is an important issue in industry. It causes an additional deburring operation, which is time consuming and has a negative economic impact. This study aims to analyse burr formation mechanisms and its accumulation in successive passes during orthogonal cutting of a cast aluminium alloy. A customized experimental setup was developed, which includes a high speed imaging system and a laser profilometer. A design of experiments using the setup mentioned previously is carried out and a methodology for geometric burr characterization is developed and applied. Furthermore, statistical representation of the obtained results is performed, which allows the understanding of the geometric heterogeneity influence associated to burr formation mechanisms and to work material microstructure. Based on the exit burr analysis, new geometrical criteria are proposed for the characterisation and the definition of two main burr formation mechanisms. The influence of cutting parameters on burr morphology along the workpiece exit edge is investigated in depth. The results show that two types of burrs can be produced simultaneously along the workpiece exit edge due to the work material microstructure heterogeneity. The results present as well the influence of low uncut chip thickness that leads to a higher proportion of burrs without chamfer. This type of burr is higher and more propice to burr accumulation. After performing several cutting passes, these burrs may be eliminated and replaced by a burr with chamfer.
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Phenomenological study of multivariable effects on exit burr criteria during orthogonal cutting of AlSi alloys using principal components analysis RÉGNIER, Tristan; FROMENTIN, Guillaume; D'ACUNTO, Alain; OUTEIRO, José; MARCON, Bertrand; CROLET, Arnaud (ASME American Society of Mechanical Engineers, 2018)During machining, burrs are produced along a part’s edges, which can affect a final product lifetime or its efficiency. Moreover, time-consuming and expensive techniques are needed to be applied to remove such burrs. ...
Experimental Investigation and Modelling of Burr Formation during Orthogonal Cutting of A356+0.5Cu Aluminium Alloy RÉGNIER, Tristan; FROMENTIN, Guillaume; OUTEIRO, José; MARCON, Bertrand; D'ACUNTO, Alain; CROLET, Arnaud (2016)Burr formation during parts manufacturing is a significant problem that companies try to minimise or eliminate. The present work aims to study the burr formation mechanisms in a cast aluminium alloy. Orthogonal cutting ...
Etude de la formation des bavures en coupe orthogonale à l’outil carbure dans un alliage d’Aluminium – Silicium. RÉGNIER, Tristan; FROMENTIN, Guillaume; OUTEIRO, José; MARCON, Bertrand; D'ACUNTO, Alain; CROLET, Arnaud (2016)Le but de cet article est d’étudier l’influence des paramètres de coupe sur la formation des bavures en coupe orthogonale. Pour ce faire, une étude en rabotage est réalisée avec des plaquettes carbures, sur un alliage ...
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