| Along with the very fast development of the scientific technology, many profound changes have been happened in the technology of machine manufacture. The traditional common processing equipments become hardly suit the requirement of the high quality and high efficiency of the market competition. Because in the core of numerical control technology,the present technology of manufacture is the important sign at the industry of machine manufacture. Numerical Control Machine Tool and Numerical Control Processing Center, which in the control of the microcomputer, have the high precision, and some capabilities, which can suit the processing of complex part.In order to adapt to market needs and enhance competition, Shanxi Diesel Engine Factory which is belong to the China Shipbuilding Company decided to transformate a common milling machine 6M612.Based on the transformation of the milling machine,through a full inspection of this milling machine,my subject confirmed the project of the transformation. And mainly research the FANUC 0i CNC system's performance and characteristics. Then, selecting CNC system according to the characteristics of the milling 6M612. Depth understanding of the structure and working principle , designing the PMC system of milling. Finally, connect and debug the transformation of CNC milling machine.After more the a year relation technical staff's effort, and through the repeat debugging and testing of this milling machine , the performance of milling machine, precision, process parameters had meet the requirements and passed the final checking.Transformation of the milling machine has made significant economic benefits. And compared to the new machine of the same function, the cost can be saved at least 60%. In addition, the performance and processing quality have greatly improved. Now, the CNC milling machine has been put into production.
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