提出了机械零部件三维模型库的构建思路与方法，介绍了三维建模、虚拟现实、数据库及网络技术。通过虚拟现实技术和网络技术实现了三维模型在网络上的传播及用户对三维模型的旋转、平移、放大及缩小等实时交互操作。

This paper presents the construction idea and methods of 3D models of mechanical parts library，describes 3D modeling， virtual reality，database and network technology． This system realizes real-time interactive functions through virtual reality technology，including the operation of 3D model such as translation， rotation， zoom out and in．