Abstract:

According to virtual tools used in assembly, firstly, assembly tools were categorized as three types by operational type, then assembly tool library was built in virtual environment. Each tool was expressed by displaying model, collision model and logic model. Secondly, assembly process using the tool kinds in virtual environment was given, including position between virtual tool and operated object, as well as assembling between operated object and related object. Finally, an assembly example of a simulation process using virtual tools in workplace planning of automobile engine assembly line was given to validate the feasibility and the validity of the method.

Key words: virtual assembly, assembly tool library, tool model, assembly simulation

摘要：

为了实现虚拟工具的装配操作，首先根据操作方式以及自动化程度把工具分成自动工具、半自动工具和手动工具三类，在虚拟环境下建立装配工具库，提出了包含显示模型、碰撞模型、逻辑模型的虚拟工具表达方式；其次根据工具的类型，实现了虚拟环境下使用各类工具对零件的装配过程，包括虚拟工具与操作对象的定位以及操作对象与待装配体的装配过程；最后以汽车发动机装配线的工位规划为例，验证了所述方法的正确性和有效性。

关键词: 虚拟装配, 装配工具库, 工具模型, 装配仿真