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NC slicing equipment implemented the automatic cutting function by using electrical methods. The hardware design of main control board uses STM32F103VCT6 ARM chip as the main chip , implemented the real-time feedback function of 2 axis servo motor control and encoder signal processing, to ensure the system Running distance precision, at the same time, implemented the RTU protocol and MODBUS communication interface and SPI touch s-creen based on data storage function, character in user-friendly man-machine interface and multi section type parameter storage; the software is developed by the implementation of modular, using the timer module to implement the function of the servo control and encoder input, SPI module for storage, serial communication module of display. The successful development of the NC slicing system, will improve the efficiency and accuracy of slicing greatly, promote enterpriser genomics.