| NC (numerical control) machine tool is a standard for a country's development. As the esscence of the NC machine, the research of the NC system has far-reaching meaning. With the development of embedded systems, especially the development of the high-performance embedded micro processors, it will be a trend that using embedded processor to construct NC platform in the future.The front control system of the NC machine is introduced in this article, including the hardware implementation of the front controller and the the design of the interactive system. In the hardware implementation of the ARMS3C2440 is used as the master control chip of the front controller. In addition to the master chip, the electrical source model, memory, FLASH and other corresponding parts of an appliance are chosen to construct the minimum hardware system. At the same time, related external resources are expanded to support other functions of the front control system, such as UART circuit,SD card interface circuit,LCD interface circuit,JTAG debug interface circuit and so on.In the part of the software, the interactive system of the NC machine is designed. The embeded Linux is used as the Operating System of the interactive system. In addition, the MiniGUI is adopted as the image interface system to realize the interaction between the operator and the machine. The numerical control program manages the module's running at the background and designs to translate and deposit the program in order to realize the interactive system.Through testing, it shows that the minimum hardware works steadily, related external circuits is in a good condition and the system can meet the reqirement of the front control system of the NC machine. At the same time, the software runs steadily, it can exactly deal with several numerical control programs, including reading, writing and translating. Finally the software can finish the simulation of moving positon of the reamer through interactive system. |
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