Research Initiation: Extraction and Unification of Manufacturing Features in Constructive Solid Geometry

倒角、圆角、圆角、键槽和孔等制造特征仅隐式嵌入实体造型表达中。本研究的目的是开发一种能够从构造性实体几何(CSG)树中提取制造特征并进一步重建该树以统一特征表示的算法。这项研究分为两个阶段：第一阶段主要是研究单个特征，以开发能够提取和统一大量特征的算法；第二阶段涉及协调CSG树中所有不同的特征，然后支持自动工艺规划和体积近似等应用用途。

Manufacturing features such as chamfer, round, fillet, keyway, and bore are only implicitly embedded in solid modeling representations. The objective of this research is to develop an algorithm capable of extracting such manufacturing features from a Constructive Solid Geometry (CSG) tree and further rebuilding the tree to unify feature representations. This research consists of two phases: Phase 1 focuses on the study of individual features mainly to develop algorithms that are capable of extracting and unifying a large variety of features; and Phase 2 involves an effort to coordinate all distinct features within a CSG tree, and then to support application uses such as automatic process planning and volume approximation.