Development Of CNC System Based On Windows Platform For Ammunition Hydraulic Press

In the thesis,the current status and development tendency of forge press in domestic and abroad are investigated. The work principle of ammunition hydraulic press and its CNC system are studied and developed. The software of the CNC system is developed through object-oriented technology. Merits of this method are enumerated and an application is given in this thesis. Two key technologies that adopted in the CNC system based on Windows platform-the multi-thread technology and the precise timing for real time control system are deeply studied.The hydraulic press CNC system implements its multiple tasks based on Windows multi-thread technology. The synchronization problem in multiple-thread application is investigated and resolved. At the same time,the precise timing of the CNC system which accomplish the real-time tasks in the control system is achieved through the multimedia timer and the VxD technologyAccording to the requirements of velocity control in the hydraulic press,a new method that based on experiment is presented in this thesis. The empirical velocity control equation and its corresponding curve is established using the MATLAB software. The interface of C++Builder and MATLAB is also discussed.At the end of the thesis,the future study and improvement of the CNC system is discussed and suggested.