A machining unit of an aerospace enterprise was taken as the research object in the view of some issues including difficulties of equipment control and acquisition,low digitized degree,slow system response existing in the digital control of machining units,and the business process of the unit was analyzed.An information architecture for interworking of the unit in which static basic data and dynamic business data were separated was proposed,and a hardware-oriented data communication module was constructed to realize real-time acquisition and encapsulation of multi-source heterogeneous devices.Based on the design of reactive system,the finite state machine was introduced to carry out the research of production scheduling control strategy,and the robot and workpiece were respectively used as scheduling objects for behavior modeling.Using object-oriented method,the program structure of state machine based on event-driven was improved.Based on these,the system software of the machining unit was developed for digital control of the whole process by using the .NET technology.Finally,the effectiveness and reliability of the as-built system were verified at the production site.