【摘要】 产品装配建模是对产品进行设计评价的基础，ＳＴＥＰ是支持产品整个生命周期的产品信息数据交换标准；本文提出了反映设计过程和装配过程的二叉树装配模型。采用面向对象的技术，用ＳＴＥＰ的ＥＸＰＲＥＳＳ－Ｇ 对装配单元进行描述，便于产品的可装配性评价及与其它应用领域如ＣＡＤ、ＣＡＭ 等的集成。更多还原

【Abstract】 Assembly modelling is the basis of evaluating product at design stage. STEP is an international standard that provides an unambiguous representation and exchange mechanism for computer interpretable product information throughout the lifecycle of a product. The paper describes in detail the binary tree assembly modelling based on design and assembly process. A representation using EXPRESS G of STEP is given so that the assemblability evaluation and application interface with different application systems such as CAD/CAM software are easy.更多还原