【摘要】 过渡特征的识别与抑制是有效实现CAD/CAE、CAD/CAM集成的关键技术之一。提出了一种简单、高效的过渡特征识别与抑制算法。该算法首先识别出零件中的全部过渡面,并将它们划分为边过渡特征、点过渡特征以及混合过渡区域,将混合过渡区域分解为独立的边、点过渡特征,将每一边、点过渡特征所包含的全部过渡面作为一个整体,采用欧拉操作进行抑制。该算法简化了抑制过程,显著提高了抑制效率。此外,该算法不受过渡面生成方法的制约,能处理任意类型的过渡面。最后,给出了实验结果。更多还原

【Abstract】 An algorithm for efficiently recognizing and suppressing blend features is present. The algorithm first recognizes all of blend faces from the Boundary Representation of a part, and then distinguishes them as edge-blend feature, vertex-blend feature and mixed-blend region. Furthermore, the mixed-blend region is divided into pure edge-blend feature and pure vertex-blend feature. Lastly, each recognized blend feature is suppressed as a whole by means of Euler Operators. The novelty of the presented algorithm lies in that all the entities of a recognized blend feature are suppressed in a global way, by which the efficiency of suppression is greatly improved. In addition, the algorithm can deal with all types of blend faces generated by various methods. In the end, some test results are given.更多还原