目的 满足胶印机的研发和维护，为产品提供一种自我展示的虚拟平台。方法 选用型号为PZ1740E的四开单张纸单色平版胶印机为例，通过使用较为精准的测量工具实际测量，在三维建模软件3ds MAX中进行建模，以及模型的优化，最后导入Unity3D中完成虚拟装配系统的制作。结果 既可以实现自动装配功能，又可以手动进行拆分和装配操作，观察印刷部分的内外构造。结论 将虚拟现实技术、装配技术与胶印机相结合，使胶印机印刷部分的整体结构和功能以数字化的方式呈现，更好地应用于胶印机的工业设计、完善和维护。

The work aims to meet the research, development and maintenance of offset printing machines, and to provide a self-presenting virtual platform for products. With PZ1740E four-fold single sheet monochrome lithographic offset press as an example, a more accurate measuring tool was used for actual measurement, then the modeling and its optimization were completed in the software 3ds MAX. And finally the production of the virtual assembly system was completed in Unity 3D. The assembly system was able to separate and assemble the printed part of the offset press both automatically and manually, showing the internal and external structure of the printed part. The combination of the virtual reality technology, assembly technology and offset printing machine present the overall structure and function of the printing part of the offset printing machine in a digital way. It can be better applied to the industrial design, improvement and maintenance of offset presses.