本文選題：鈑金 + 特征造型�。� 參考：《華南理工大學》2013年碩士論文

【摘要】：當前，國內(nèi)自主版權(quán)的鈑金CAD/CAM應(yīng)用系統(tǒng)主要有兩類，一類包含鈑金的參數(shù)化造型展開功能，但造型設(shè)計只能通過設(shè)定模型的預定義的參數(shù)來定義鈑金造型，不能設(shè)計造型；另一類系統(tǒng)既能進行參數(shù)化造型設(shè)計，也能進行鈑金展開，但是造型設(shè)計功能基于國外的三維CAD系統(tǒng)平臺，這些CAD平臺售價昂貴，廣泛推廣有一定困難。所以一個能夠進行鈑金參數(shù)化造型設(shè)計與展開的國產(chǎn)CAD系統(tǒng)能夠滿足設(shè)計與廣泛推廣的需求。 本文以鈑金的特征造型為研究對象，基于具有全部技術(shù)自主知識產(chǎn)權(quán)的國產(chǎn)ZW3D CAD軟件，對該平臺特征造型原理以及實現(xiàn)鈑金特征造型的一系列關(guān)鍵問題進行了研究。具體工作包括： 研究ZW3D軟件的特征造型內(nèi)核系統(tǒng)，包括該特征造型系統(tǒng)幾何拓撲表示以及永久命名工作機制、特征表示方法。研究表明該特征系統(tǒng)能夠表達復雜幾何特征造型，能夠方便準確的進行特征相關(guān)幾何對象的搜索和匹配，并且具備良好的擴展性，，能夠很好的支持鈑金特征造型的特點，實現(xiàn)新的鈑金特征功能。 在研究鈑金特征造型特點的基礎(chǔ)上，結(jié)合國產(chǎn)ZW3D軟件平臺，以與通用特征相融合的方式，設(shè)計了鈑金的主要特征造型方法，包括鈑金折彎、凸緣、展開與折疊以及局部成型等。 提出了一種鈑金模型展開與折疊方法，通過使用面對象屬性標識折彎面的方法，遍歷查找面的鄰接折彎面進行遞歸展開過程，不需要遍歷鈑金特征即可得到展開模型。 在上述研究的基礎(chǔ)上，基于ZW3D平臺開發(fā)了鈑金特征造型模塊，實現(xiàn)了鈑金件的特征設(shè)計的主要功能。
[Abstract]:At present, there are two main types of sheet metal CAD/CAM application systems with independent copyright in China. One includes the parameterized modeling of sheet metal, but the modeling design can only define the sheet metal modeling by setting the predefined parameters of the model, and can not design the modeling. The other kind of system can not only enter the parameterized design, but also carry out the sheet metal expansion, but the other kind of system can also carry out the sheet metal expansion. It is a three-dimensional CAD system platform based on foreign based design and design. These CAD platforms are expensive and widely spread. So a domestic CAD system that can design and expand the parameterized modeling and expansion of sheet metal can meet the needs of design and extensive popularization.
Based on the feature modeling of sheet metal as the research object, based on the domestic ZW3D CAD software with all technical independent intellectual property rights, this paper studies the principle of the feature modeling of the platform and a series of key problems to realize the feature modeling of the sheet metal. The specific work includes:
The feature modeling kernel system of ZW3D software is studied, including the geometric topology representation of the feature modeling system and the permanent naming work mechanism, and the feature representation method. The research shows that the feature system can express complex geometric feature modeling, and can easily and accurately search and match feature related geometric objects, and have good expansion. Developability can well support the characteristics of sheet metal feature modeling and realize the new sheet metal feature function.
On the basis of the characteristics of sheet metal feature modeling, combined with the domestic ZW3D software platform, the main feature modeling methods of sheet metal are designed, including sheet metal bending, flange, expansion and folding and local molding.
A method of expansion and folding of the sheet metal model is proposed. By using the method of facing the image attribute logo bending surface, the adjacency bending surface of the lookup surface is traversed through the recursive expansion process, and the expansion model can be obtained without traversal of the sheet metal features.
On the basis of the above research, the sheet metal feature modeling module is developed based on the ZW3D platform, and the main functions of the feature design of sheet metal parts are realized.
【學位授予單位】：華南理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TG386;TP391.72

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