Model for performance prediction in multi-axis machining

Details Model for performance prediction in multi-axis machining Model for performance prediction in multi-axis machining

2009-04-07

arxiv.org/abs/0904.1075v1

International Journal of Advanced Manufacturing Technology 37, 5-6 (2007) pages 534-544

Physics

Classical Physics

Scientific paper

10.1007/s00170-007-1001-4

This paper deals with a predictive model of kinematical performance in 5-axis milling within the context of High Speed Machining. Indeed, 5-axis high speed milling makes it possible to improve quality and productivity thanks to the degrees of freedom brought by the tool axis orientation. The tool axis orientation can be set efficiently in terms of productivity by considering kinematical constraints resulting from the set machine-tool/NC unit. Capacities of each axis as well as some NC unit functions can be expressed as limiting constraints. The proposed model relies on each axis displacement in the joint space of the machine-tool and predicts the most limiting axis for each trajectory segment. Thus, the calculation of the tool feedrate can be performed highlighting zones for which the programmed feedrate is not reached. This constitutes an indicator for trajectory optimization. The efficiency of the model is illustrated through examples. Finally, the model could be used for optimizing process planning.

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