Contribution à l'étude de l'influence du comportement vibratoire du système "pièce - outil - machine" sur la qualité de surface obtenue en tournage de superfinition

Abstract : The superfinishing in turning is very specific, depth of cut about 0.05mm and feed in the order of 0.05mm/rev and allows to produce surfaces with precision and roughness equivalent to grinding process. However, this process is strongly influenced by the dynamic characteristics of the machining system. The aim of our work is to understand how dynamic characteristics of the Part/Tool/Machine (P.T.M.) system influence the surface quality obtained in superfinishing with cutting tool. Initially, we defined acceptable and stable cutting conditions by using the standardized method of the Couple tool-matterial. Then, a frequential analysis enabled us to identify three remarkable sources of vibrations in the P.T.M. system that are the machine tool, the spindle frequency and the tool. Then, we set up an experimental study in order to evaluate the influence of the identified sources of vibrations on surface quality and on the vibrations measured on the cutting tool. Finally we studied the correlations between the vibrations and the surface quality obtained by superfinishing turning
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Arnaud Crolet. Contribution à l'étude de l'influence du comportement vibratoire du système "pièce - outil - machine" sur la qualité de surface obtenue en tournage de superfinition. Autre. Institut National Polytechnique de Lorraine, 2008. Français. ⟨NNT : 2008INPL040N⟩. ⟨tel-01753042⟩

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