Abstract: Aimed at modeling of parts with complex small blend features, a new re-modeling methodology based on triangular Bézier surface is presented. With techniques such as adding of mesh point and editing of mesh topological relationships, the feature blending operation, existing in a pattern of feature such as X and T formed by the intersection of two feature regions, is discussed. Application shows that segmented modeling, patch overlapping and feature blending can present a satisfied whole representation of complex parts with small blend features.

Key words: Feature blending, Reverse engineering, Triangular Bézier surface