| The open numerical control system appeared in 1990s is a kind of advanced structure with excellent extension, convenient maintenance, good stability in operating and flexibly adaptability to different requirement. It is the future trends of the numerical control technology. With the rapid development of the technologies of the computer, the electronics and the modern control, it becomes more and more necessary to develop the modern CNC system cheaply and quickly with these advanced technologies.This dissertation realizes one open computer system for three axis numerical control engrave-milling machine using computer software, hardware, PLC and DSP technologies. The system is one PC-DSP principal and subordinate frame. PC means one general personal computer. DSP implies on GE300SV multi-axis motion controller made by Googol Technology (Shenzhen) Co. Ltd. The plant controlled is one right-angle coordinate, three axis flat roof for engrave-milling machine consisted of three set of servo motor and driver, exact grating-ruler, limit switch and so on driving one full- closed loop control servo system worktable.Engraving is a kind of traditional manual craftwork. It has a long history in business of craftwork, advertisement, architecture ornament and the like. However, with the development of the technology of CNC and CAD/CAM/CAPP, CNC processing is replacing this traditional manual processing gradually. The sev Engrave-milling machine which was made by the Mechanical and Electro-hydraulic Lab of Engineering training center of NCUT, can meet the two-dimensional and three-dimensional engraving of all kinds of characters or images. The CNC Engrave-milling system is a high-tech equipment which integrates CAD/CAM, digital image processing, high-speed milling(HSM),CNC, precision mechanical design and manufacture, motor driver technology and build-in motor spindle technology. The main purpose of this dissertation is to research and develop the system.The open numerical control Engrave-milling machine system of the PC+GE300SV-based motion controller has been discussed from software and hardware in detail in the dissertation. The system structure, modular design of numerical control system software and development process of Windows XP-based condition upper human-machine interface of the Engrave-milling machine system have been introduced. Finally, the author has been done some test based the former Engrave-milling machine in order to prove the finished product, which surface quality and process efficiency weather obtained the design aim. The machine had passed through the practical project test and has basically achieved the design goal.
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