assembly relationships, assembly hiberarchy and assembly restraints are analyzed . the assembly modeling methods of bottom-up and top-down are put forward . the author summarizes the characteristics of panels, investigates the modeling technology of free-form curve and surface; the algorithm of surface joining and surface blending is also analyzed 闡述了面向裝配的設(shè)計方法的運行模式和體系結(jié)構(gòu);詳細(xì)探討了裝配建模的主要內(nèi)容,分析了裝配模型的裝配關(guān)系、裝配層次關(guān)系以及裝配約束,對裝配模型的信息組成進行了介紹,提出了自下向上的裝配建模方法和自頂向下的裝配建模方法。