结构-视图模型下零件可变型设计方法

Part Variable Design Method Based on Structure-View Model

提出基于功能结构-结构视图模型的零件族建模方法,将零件变型设计的对象层次定义到有一定工程语义、表达工程功能的结构,将零件描述为由功能结构以一定的组合关系构成的可扩展网络.组成零件的功能结构通过施加空间布局约束和拼接约束建立零件族模型.通过修改参数尺寸可以实现零件大小的变化;通过对功能结构的修改或替换达到零件实例结构的变型和变异;通过提高零件变型对象的层次实现零件功能结构的变异.

Part family modeling based on structure-view model is introduced in this paper. The model describes the object level of part variable design as a structure, possessing certain engineering context and engineering functions. In this paper, the part is described as an expandable net, composed by functional structures in certain combination relations. The part is build-up by structures in the way of adding the layout and combination restriction. Modification of parameters can lead to the change of the actual part size, and the modification or substitution of the structure can lead may raise the object level of the part variable design and to the derivation and change of the actual part. It implement the variation of the part structure.