Maximum Feedrate Interpolator for Multi-axis CNC Machining with Jerk Constraints

Xavier Beudaert (1) , Sylvain Lavernhe (1) , Christophe Tournier (1)

1 LURPA - Laboratoire Universitaire de Recherche en Production Automatisée

A key role of the CNC is to perform the feedrate interpolation which means to generate the setpoints for each machine tool axis. The aim of the VPOp algorithm is to make maximum use of the machine tool respecting both tangential and axis jerk on rotary and linear axes. The developed algorithm uses an iterative constraints intersection approach. At each sampling period, all the constraints given by each axis are expressed and by intersecting all of them the allowable interval for the next point along the path is computed. Examples and comparisons with an industrial CNC demonstrate the performances of the algorithm.

Mots clés: Feedrate; CNC; Jerk

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

Xavier Beudaert, Sylvain Lavernhe, Christophe Tournier. Maximum Feedrate Interpolator for Multi-axis CNC Machining with Jerk Constraints. 9th International Conference on High Speed Machining, Mar 2012, San Sebastian, Spain. ⟨hal-00986174⟩