特征建模技术是CAD、CAPP及CAM等集成系统的关键技术之一,是产品模型设计的核心。它为全局集成产品模型提供了有效的造型手段。特征造型的核心思想就是力图使设计师将主要精力集中到模型的高层设计上,并通过关联产品模型中的功能信息与形状信息来实现三维造型。然而,在实际应用过程中,特征造 Feature modeling technology is one of the key technologies of integrated systems such as CAD, CAPP and CAM, and is the core of product model design. It provides an effective modeling tool for globally integrated product models. The core idea of ​​feature modeling is to try hard to make designers focus on the high-level design of the model and realize the 3D modeling through the functional information and shape information in the related product model. However, in practice, features are built