复杂产品拆卸层次模型与构建方法研究  

Research on disassembly hierarchy model and its construction method for complex products

作　　者：郭磊 张秀芬[1] 田永廷 蔚刚[2] GUO Lei;ZHANG Xiu-fen;TIAN Yong-ting;YU Gang(College of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Teaching and Learning Department,Inner MongoliaElectromechanical Vocational and Technical College,Hohhot 010070,China)

机构地区：[1]内蒙古工业大学机械工程学院,内蒙古呼和浩特010051 [2]内蒙古机电职业技术学院教学实习部,内蒙古呼和浩特010070

出　　处：《机电工程》2020年第3期234-240,共7页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51565044,51965049);内蒙古自治区自然科学基金资助项目(2017MS(LH)0510);内蒙古自治区高等学校青年科技英才支持计划资助项目(NJYT-17-B08);内蒙古自治区高等学校科学研究项目(NJZY19272);内蒙古机电职业技术学院科学研究项目(NJDZJZR1813)。

摘　　要：针对目前复杂产品拆卸序列规划过程中拆卸信息模型复杂、构建困难等问题,对拆卸信息模型的约束含义、表示方式、构建方法等方面进行了研究,提出了一种基于拆卸部件几何约束关系同步解除的拆卸层次模型及其构建方法。定义了拆卸层次模型,以描述零部件间的接触、空间、拆卸优先级等约束信息;提出了子拆卸体的获取方法,通过复杂产品拆卸任务分层,逐层获得了子拆卸体,生成了初始拆卸层次图模型,给出了拆卸约束简化规则,去除了模型中的冗余信息,形成了拆卸层次模型;最后,利用某一发动机对所提模型和构建方法的可行性进行了验证。研究结果表明:该方法充分结合了复杂产品的模块化设计的特点,提高了建模效率,为复杂产品自动化拆卸问题的计算机求解提供了支持。Aiming at the complexity of the disassembly information model and the difficulty of its construction in the current complex product disassembly sequence planning process,the constraint meaning,meaning of expression and construction method of the disassembly information model were studied.On the basis of the synchronous release of geometric constraint relationship of disassembly components,a disassembly hierarchy model and its construction method was proposed.A disassembly hierarchy model was defined to describe the constraint information such as contact,space constraints,and disassembly priority between components.The acquisition method of the sub-disassembly body was proposed.Furthermore,the sub-disassembly body was obtained by decomposing the disassembly tasks of complex product layer by layer.Thus,the initial disassembly hierarchical model was constructed after all of the sub-disassembly bodies were obtained.In order to remove the redundant information in the initial disassembly hierarchical model,the disassembly constraint simplification rules were given,and the disassembly hierarchical model was formed after simplification.Finally,the feasibility of the proposed model and construction method was verified by an engine case.The results indicate that the modeling efficiency is increased by employing the characteristics of modular design of complex products,which provides a support for solving the automation disassembly problem of complex products by computer.

关 键 词：拆卸 拆卸序列规划 简化 层次模型 拆卸任务 

分 类 号：TH128[机械工程—机械设计及理论] TP24[自动化与计算机技术—检测技术与自动化装置]