Study of phenomena responsible for part distortions when turning thin Inconel 718 workpieces
Article dans une revue avec comité de lecture
Date
2020Journal
Journal of Manufacturing ProcessesAbstract
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 sources due to low part stiffness. There is a lack of studies trying to quantify the influence of machining induced residual stresses on the total geometrical errors. A thorough experimental methodology is developed to quantify the influence of both phenomena separately by comparing the workpiece shape and dimensions, in-situ, before and after machining, using laser sensors. The proposed methodology can also be used to quantify the geometrical errors linked to clamping or stress rebalancing following material removal. The case study is the finish turning of thin Inconel 718 workpieces using carbide tools. In the studied case, machining induced residual stresses are responsible for 3–32 % of the total geometrical errors depending on tool wear and cutting parameters.
Files in this item
Collections
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureTOUBHANS, Bastien; FROMENTIN, Guillaume;
VIPREY, Fabien; KARAOUNI, Habib; DORLIN, Théo (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 ... -
Communication avec acteComplex workpieces may contain thin sections that are more likely to deform during machining due to cutting forces. It may result in form errors on the final product. Then, it is important to anticipate such defects when ...
-
Article dans une revue avec comité de lectureTOUBHANS, Bastien; LORONG, Philippe;
VIPREY, Fabien; FROMENTIN, Guillaume; KARAOUNI, Habib (Springer Science and Business Media LLC, 2021)
In-process workpiece elastic deflection is the major source of geometrical error when machining low-stiffness workpieces. It creates an undercut error which needs to be corrected by time-consuming and labour-intensive ... -
Communication avec acte
RANCHIN, Lucas;
VIPREY, Fabien; FROMENTIN, Guillaume;
MONTEIRO, Eric; LORONG, Philippe; KARAOUNI, Habib; DORLIN, Théo (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 lectureCHERIF, Iheb; DORLIN, Théo; MARCON, Bertrand; FROMENTIN, Guillaume; KARAOUNI, Habib (ELSEVIER, 2018)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 ...