基于装配约束动态创建的虚拟装配技术研究  

Research of Virtual Assembly Technology Based on Dynamic Construction of Sssembly Constraint

作　　者：邓逸辰 范秀敏[1] 邱世广[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《组合机床与自动化加工技术》2014年第7期124-128,共5页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：为了有效地减少在虚拟环境下进行装配仿真之前的仿真模型建模工作量,提高装配仿真的智能化程度,提出了一种在虚拟环境下面向装配仿真的装配约束关系动态创建的方法。通过提取零件信息文件中的约束特征信息,在装配仿真过程中对两个零件间可形成装配约束的约束特征进行识别和匹配,并利用识别所得的约束配对自动建立零件间的装配约束关系,从而为虚拟环境下的装配仿真提供了一种更灵活的实现方法。结合自主研发的虚拟装配软件,给出了实现基于装配约束动态创建的虚拟装配所需要的零件信息文件的数据结构、约束特征识别和匹配的条件、约束确认的算法流程,并通过具体实例验证了该方法的有效性。In order to reduce the modeling work load of assembly simulation in virtual environment effectively,and to enhance the automatic level of assembly simulation,the dynamic construction method of assembly constraint in virtual environment is presented.By extracting the constraint feature information of parts that is used for virtual assembly,the feature in each part which is likely to form a assembly constraint can be recognized.A more flexible solution of assembly simulation in virtual environment is proposed through transforming the constraint pair recognized above into assembly constraint relationship between parts automatically.Combining with the virtual assembly simulation software,the data structure of part models,condition of constraint feature recognition,and constraint feature verifying process are proposed.The effectiveness of the method is validated by examples in the software.

关 键 词：虚拟装配 装配约束特征 自动识别 动态创建 

分 类 号：TH166[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]