Abstract: In the reverse modeling of internal structure of turbine blade, reconstructing large number of cooling holes is the most difficult task. Based on properties of feature array, the reconstruction method is decomposed into segmentation, surface reconstruction and beautification, which are described in algorithmic level in detail. Successful application of the method on industrial parts shows that both modeling speed and accuracy are greatly improved, and more over design intentions are captured.

Key words: blade, reverse engineering, array, feature, surface