In a manufacturing system, the digital tools such as CAD, CAM, and simulation systems has been usually used. Then, communication among these systems frequently occurs. However, interoperability among heterogeneous software systems and tools is generally not available. Moreover, existing machining information models lack the necessary information and are described in their own formats. Consequently, many models which include the same information exist. There is another problem that various simulations for a virtual machining system and adaptive control for a real machining system are inacculate. To solve this problem, a digital machining information (DMI) model to support a real-virtual machining system is proposed in this study.