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ＣＡＤ／ＣＡＰＰ／ＣＡＭ／ＭＰＳ（加工过程仿真）是虚拟制造的关键技术。本系统针对非回转体零件，基于ＳＴＥＰ标准，利用商品化ＣＡＤ／ＣＡＭ软件——Ｐｒｏ／Ｅ为平台，在完成ＣＡＭ与ＣＡＤ、ＣＡＰＰ、ＭＰＳ信息集成的基础上，利用Ｐｒｏ／Ｅ的加工功能实现加工过程的自动化，并为加工过程仿真与ＮＣ代码仿真提供信息需求。本ＣＡＭ系统通过获取ＣＡＤ的零件建模信息，ＣＡＰＰ的工艺规划信息，对Ｐｒｏ／Ｅ的ＣＡＭ信息获取进行重新设计，对Ｐｒｏ／Ｅ的加工功能进行二次开发，实现ＣＡＭ与ＣＡＤ、ＣＡＰＰ、ＭＰＳ的无缝集成，完成零件的自动加工过程仿真，大大减少了工程技术人员的工作量。实际应用表明：此方法集成度高、柔性大。
CAD / CAPP / CAM / MPS (Process Simulation) is the key technology of virtual manufacturing. Based on the STEP standard, this system uses the commercial CAD / CAM software - Pro / E as a platform. Based on the integration of CAM, CAD, CAPP and MPS information, this system uses the processing function of Pro / E Automating the machining process and providing information requirements for machining process simulation and NC code simulation. The CAM system redesigning CAM information acquisition of Pro / E by acquiring part modeling information of CAD, process planning information of CAPP, secondarily developing processing function of Pro / E, realizing CAM and CAD, CAPP, MPS The seamless integration of components to complete the automatic machining process simulation, greatly reducing the workload of engineering and technical personnel. Practical application shows that this method is highly integrated and flexible.