Generating efficient toolpath by cutter posture optimization in five-axis machining based on inverse feedback mechanism

Generating efficient toolpath by cutter posture optimization in five-axis machining based on... This paper proposes a tool posture optimization method in five-axis machining using configuration space (C-Space) transformation according to the inverse feedback message. In conventional computer numerical control (CNC) manufacture process, the machining status information transmission is in single direction, and the CNC system interpolates the toolpaths without feedback. However, considering the drives’ acceleration and deceleration, the interpolation situation would greatly affect the machining efficiency and the trajectory should be adjusted in CNC. In this case, the toolpath efficiency is deteriorated and unable to be evaluated exactly by traditional c omputer-aided manufacturing (CAM) system, where the efficiency is approximately estimated by the length of toolpath. In this paper, an inverse feedback mechanism is proposed; the simulated information on CNC system interpolation can be feedback to CAM system to help evaluate the toolpath efficiency. An axis-based dynamic confined feedrate schedule model is used to find the feed sensitive zones of the toolpaths. A C-Space method is adopted to adjust the tool postures in the sensitive zones. Several examples are given to verify the method, and the machining efficiency is raised by 10% on the whole after feedback optimization. The International Journal of Advanced Manufacturing Technology Springer Journals

Generating efficient toolpath by cutter posture optimization in five-axis machining based on inverse feedback mechanism

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Springer London
Copyright © 2017 by Springer-Verlag London
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
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