个性化唇侧自锁托槽的设计与有限元分析  

Design and Finite Element Analysis of the Personalized Labial Self-Ligating Bracket

作　　者：张洪[1] 盛亚[1,2] 张弓 

机构地区：[1]广东工业大学机电工程学院,广东广州510006 [2]广州中国科学院先进技术研究所,广东广州511458

出　　处：《机械设计与制造》2018年第3期71-74,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金(51307170);佛山市院市合作项目(2014HT10008);东莞市高等院校科技计划项目(2012108101006)

摘　　要：为克服传统标准化设计方法造成的唇侧自锁托槽不匹配和对牙齿三维控制力不可调问题,进行个性化唇侧自锁托槽的新型设计与快速成型。结合逆向工程技术与Pro/E三维软件建模技术,完成与患者牙齿唇侧面高度匹配的个性化托槽基座模型和控制力可调式装置的设计。用Ansys Workbench有限元分析软件对所建立的托槽装配体模型进行有限元结构静力学分析,验证结构的静力学强度。将满足设计要求的自锁托槽模型导入到快速成型设备中进行3D打印,实现自锁托槽模型的快速成型。结果表明该新型托槽可满足结构的力学性能要求,而且设计的托槽基座的底板与牙齿唇侧表面形状的相似度高,粘结致密性好。逆向工程、正向工程、有限元分析与快速成型的结合技术,可为自锁托槽的设计与无模制造提供一种新方法。To overcome the traditional design method of standardization of labial self-ligating bracket that mismatches teeth and three-dimensional control regulation is not adjustable for teeth problems,the new design and rapid prototyping method of personalized labial side self-locking braces are proposed. A model of a personalized orthodontic bracket base is built,it has a high similarity with the tooth surface shape,the model and a adjustable device are built by the technology of Reverse Engineering and Pro/E software. The braces assembly model will be imported into Ansys Workbench to carry out the finite element structural analysis and verify the statics of structure strength. Finally,the model of qualified self-ligating bracket is imported to a rapid prototyping equipment for 3D printing to realise the rapid prototyping of self-locking braces model. The result shows that the new orthodontic bracket can satisfy the requirements of structure mechanics performance and there is a high similarity between the bottom of the orthodontic bracket and the tooth surface shape. The combination of the reverse engineering,forward engineering,finite element analysis and rapid prototyping technology can?provide a new practical approach to the design and model-free manufacturing of the orthodontic bracket.

关 键 词：正畸托槽 快速成型 静力学分析 逆向工程 

分 类 号：TH16[机械工程—机械制造及自动化]