Experimental study of thin part vibration modes in machining

The machining of thin walls generally generates milling chatter, that damage surface roughness and manufacturing tools. Stability lobes which include natural frequencies are successful in case of tool chatter. When milling thin webs models are less adequate, because the interaction with the tool disrupts the behaviour of the work piece. The modal approach generally used for stability charts may be not adequate enough because of neglecting the tool and the work piece contact. This paper presents the experimental phase of a work aiming at analyse vibration modes of a thin web during machining. A finite element calculation shows the influence of a contact on natural frequencies of the part. For a better investigation, field displacements of the work piece are analysed. This work eventually aims at better knowledge of the contact between the tool and the part to improve the hardiness of models.

[1]  Adam G. Rehorn,et al.  State-of-the-art methods and results in tool condition monitoring: a review , 2005 .

[2]  Gilles Dessein,et al.  INFLUENCE OF MATERIAL REMOVAL ON THE DYNAMIC BEHAVIOR OF THIN-WALLED STRUCTURES IN PERIPHERAL MILLING , 2004 .

[3]  Sadettin Orhan,et al.  Tool wear evaluation by vibration analysis during end milling of AISI D3 cold work tool steel with 35 HRC hardness , 2007 .

[4]  Gilles Dessein,et al.  Surface roughness variation of thin wall milling, related to modal interactions , 2008 .

[5]  Fabrice Pierron,et al.  Stiffness and Damping Identification from Full Field Measurements on Vibrating Plates , 2006 .

[6]  Jin Jiang,et al.  Erratum to: State-of-the-art methods and results in tool condition monitoring: a review , 2005 .

[7]  Yusuf Altintas,et al.  Analytical Prediction of Chatter Stability in Milling—Part II: Application of the General Formulation to Common Milling Systems , 1998 .

[8]  Tarek Mabrouki,et al.  Prédiction du comportement vibratoire du fraisage latéral de finition des pièces à parois minces , 2002 .

[9]  Asa Prateepasen,et al.  Acoustic emission and vibration for tool wear monitoring in single-point machining using belief network , 2001, IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188).

[10]  Yusuf Altintas,et al.  Analytical Prediction of Chatter Stability in Milling—Part I: General Formulation , 1998 .