Modélisation et évaluation du comportement dynamique d'une structure de machine outil UGV pour la prédiction des défauts géométriques

Abstract : To achieve better performances in term of productivity, High Speed Machining centers have increasing kinematical characteristics. High accelerations caused by the trajectory execution dynamically load mechanical structure, axes and joints. Such deformations of mechanical components a ect the actual position of the tool in the machining frame. Hence, these gemetrical deviations make the machined geometry of the part vary from the expected one. Within the context of managing the HSM process, this study develops a framework and choice of nite element model to evaluate the structure dynamical behavior of a HSM center. Based on the proposed model, a calculation method is detailed to evaluate the geometrical deviations induced by the trajectory execution. The presented works can thus be used as a tool for the structure design of machine, the adjustment and the optimization of kinematical parameters for machining.
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Submitted on : Thursday, November 3, 2011 - 10:42:40 AM
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  • HAL Id : hal-00637859, version 1
  • ARXIV : 1111.0852

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David Prévost, Sylvain Lavernhe, François Louf, Philippe Rouch. Modélisation et évaluation du comportement dynamique d'une structure de machine outil UGV pour la prédiction des défauts géométriques. 20ème Congrès Français de Mécanique, Aug 2011, Besançon, France. CDROM paper n°714. ⟨hal-00637859⟩

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