摘要
为了最大程度地保留零件模型信息,提出了一种面向制造的圆角特征处理策略.该策略将圆角特征分为抑制类与非抑制类,并采用不同的处理方法.处理过程包括圆角特征识别与分类、圆角抑制与恢复2部分:根据刀具接近方向识别出所有主加工面,再以主加工面为基础向周围搜索识别圆角过渡面,然后分析过渡面信息进而确定圆角特征类型;对抑制类特征进行抑制,对抑制后的模型进行特征识别,完成之后恢复抑制的圆角特征,并还原三维模型的原始结构,对非抑制特征不做任何处理.该处理策略简化了圆角特征的抑制过程,最大程度地保留了三维模型的特征信息,提高了特征识别的整体效率与准确性.最后,利用实例验证了该模型的正确性.
In order to preserve the model information to a greatest degree,a fillet feature selectively inhibition and recognition strategy oriented to manufacturing is presented.Fillet feature is divided into two types： inhibition and non-inhibition,which are treated by two different methods.The process includes two parts,fillet recognition and classification,and fillet inhibition and recovery.All primary machining surfaces are identified under a tool closing direction,and the fillet transition surfaces are searched and identified based on the primary machining surface;fillet type is determined after analyzing the information of transition face.After suppressing the inhibition fillet feature,the manufacturing features of the 3D model are recognized,and then all of the fillet feature suppressed and the origin structure of 3D model would be recovered.There is no treatment for the non-inhibition fillet.The treatment strategy of fillet feature simplifies the suppression of fillet,preserves the feature information of 3D model to a greatest degree,and improves the overall efficiency and accuracy of feature recognition.Finally,a verification example is given.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第4期731-735,共5页
Journal of Southeast University：Natural Science Edition
基金
某部委预先研究资助项目(51318010304)
某部委基础科研资助项目(b1420080215)
南京市科技计划资助项目(软资-03027)
关键词
抑制类圆角特征
主加工面
广义夹角
圆角凹边
圆角凸边
inhibition fillet feature
primary machining surface
generalized angle
fillet concave edge
fillet convex edge
