A Z-map Based Approach for Extracting the Groove Shape of Impeller

摘要

As the necessary information for planning tool path, or determining the parameters of machining processes, the groove shape of impellers should be extracted exactly. A Z-map based approach is proposed to extract the groove shape of the impeller, which is formed by hub and blades in STL models. The bottom boundaries of the groove surface are computed with its Z-map models and the polygons of the groove surface are selected with the boundaries. An experimental system is implemented and some computational experiments are performed to verify the practical applicability of the approach.