Simultaneous optimization of the feed direction and tool orientation in five-axis flat-end milling

YaoAn Lu, Ye Ding and LiMin Zhu

International Journal of Production Research, 2016, vol. 54, issue 15, 4537-4546

Abstract: The two additional rotational motions of five-axis machining make the determination of the optimal feed direction and tool orientation a challenging task. A new model to find the optimal feed direction and tool orientation maximising the machining width and avoiding local gouging at a cutter contact (CC) point with a flat-end cutter considering the tool path smoothness requirement is developed in this paper. The machining error is characterised by a signed distance function defined from a point on the bottom tool circle of the cutter to the design surface. With the help of the differential evolution approach, the optimisation model can be resolved to determine the optimal tool orientation and feed direction at a given CC point, and generate the smooth tool paths following the optimal feed direction. Simulation examples demonstrate the developed techniques can improve the tool orientation and feed direction at a CC point to increase the machining width, improving the efficiency of freeform surface machining.

Date: 2016
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DOI: 10.1080/00207543.2015.1070973

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