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Execution adaptative de trajectoire 5 axes sur structures poly-articulées

Abstract : 5 axes high speed milling is increasingly used for manufacturing high addedvalue parts with complex forms in order to respect surface quality while maximizing productivity. In this context, CAM and more specifically toolpath computations play a major part. This work proposes to define toolpath depending on the workpiece but also onkinematical capacities of the polyarticulated structure.The large variety of structure in terms of architecture and kinematic enforce a generic calculation method to simplify adaptative toolpath generation. A state of the art realized in machining and robotics proposes to investigate the use of kinematical manipulability polytopes to represent kinematical capacities. An analysis of the polytopes and of the workpiece allows to generate toolpaths with a controlled feedrate and a decreasing time in 5 axes positionned milling and in 5 axes continous milling. This formalism highlights strong interactions between milling strategy parameters (workpiece setup, feed direction, tool orientation) and allows to prioritize specific parameters mix to have a controlled execution feedrate.
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  • HAL Id : tel-01709080, version 1

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Laureen Grandguillaume. Execution adaptative de trajectoire 5 axes sur structures poly-articulées. Génie mécanique [physics.class-ph]. Université Paris-Saclay, 2017. Français. ⟨NNT : 2017SACLN059⟩. ⟨tel-01709080⟩

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