本文实现了在JAVA3D 场景中构建B/S 模式的虚拟装配平台。分析了零件模型的三角片表示方法和数据存储方法，并在此基础上实现了基于三角片的碰撞检测方法，给出了一个应用实例。关键词：虚拟装配 碰撞检测 JAVA3D 路径规划Abstract: In this paper we present a virtual assembly platform of Browser/Server model inJAVA3D scene.After analyzing discribe and store of model based on convex triangle information,and realizing the collision detection of model with triangle,and a example are given.Keywords: Virtual Assembly Collision Detection JAVA3D Path Planning