一个基于图基约束集映射的参数化设计模型

A Parametric Design Model Based on the Mapping of Constraints for Graphical Primitives

文中提出了一个基于图基约束集映射的参数化设计模型 .对图基的概念作了阐述 .提出了一个适合于图基参数化的数据模型和约束集的多元组表示与映射方法 .给出了基于图基实例的约束求解方法和定位算法 ,并对计算方法作了归纳 .在此基础上 ,给出了一个基于图基的一致联动方法 .实践证明 ,基于图基联动的设计方法摆脱了传统的基于点、线、圆、圆弧低层次线素繁琐的交互设计工作 ,提高了 CAD系统的自动化程度 ,使设计人员对产品的设计、维护以及后续分析等过程都具有十分重要的意义 .

A new approach for 2D parametric design based on the mapping of constraints for graphical primitives is presented. A data model suitable for representing the parametric design of graphical primitives, an expression of the multi element constraint set as well as its mapping method are also proposed. Then an algorithm for solving the constraint graph is derived. Appling this method, the product design process can be carried out effectively.