Feed drive simulation for the prediction of the tool path follow up in High Speed Machinning

David Prévost (1) , Sylvain Lavernhe (1) , Claire Lartigue (1)

1 LURPA - Laboratoire Universitaire de Recherche en Production Automatisée

This paper deals with an advanced modeling of the feed drives of a five axis machine tool within the context of High Speed Machining. The management of the multi axes as well as high velocities causes problems to the set machine tool – Numerical Controller throughout the trajectory execution process. As a result, many errors are introduced during machining all process long affecting the surface quality. The paper aims at modeling the feed drive dynamics during trajectory follow-up including the current, the velocity and position loops as well as the feed forward terms, which characterize classical drives on actual HSM machines. It concerns translational axes as well as rotary axes. A procedure of identification is implemented. Performances of the model are assessed by the comparison between simulated tool paths to the real one. Experimental verifications of the virtual axis model are detailed for three and five axis trajectories presenting various types of geometrical discontinuities.

Mots clés: Simulation; High Speed Machining; Simulation; 5 axis machining; Identification

Domaines: Génie mécanique [physics.class-ph]; Génie mécanique [physics.class-ph]

David Prévost, Sylvain Lavernhe, Claire Lartigue. Feed drive simulation for the prediction of the tool path follow up in High Speed Machinning. Journal of Machine Engineering, High Performance Manufacturing - Machines, 2009, 8 (4), pp 32-42. ⟨hal-00476599⟩