Research on the mechanism of curvature about complex surface based on five-axis flank milling

Curvature and curvature continuity, as two of the main geometry characteristics of complex surface, cause significant influence to the surface quality in the five-axis flank milling. Firstly, the curvature continuity grade in different complex surfaces have been defined accurately by introducing the basic concept about curvature and curvature continuity. Secondly, the relationship between curvature, curvature continuity and the machine tools movement are analyzed theoretically, it can be gotten that different curvature and continuity may lead to different machine tools movement law. Lastly, simulation results verify the correction about theoretical analysis, which is coincident with the theoretical analysis. The mechanism between curvature, curvature continuity and machine tools movement, contributes to achieve the optimization and improvement of complex surface quality. (C) 2016 The Authors. Published by Elsevier B.V.