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Jiangxi Ping Steel Industry Co., Ltd. Jiujiang Branch original one 30 tons of wire rod production line , after modernization reach an annual output of more than one million tons of high-speed wire rod production line , in the project of transformation , the transformation of the flying shear system is an important part of the flying shear control system at the technical level in the 1980s into a modern start-stop flying shear control system PLC plus DC speeder combining interactive interface to match the currently popular . Original flying shear accuracy is not high , the speed of response lag , frequent malfunctions and rolling line faster , greatly affect the production of the finished product rate . Transform the entire control part through the use of modern popular computer and network technology , the system increases the axis positioning control , control of high-speed counting , logic control , and data processing and other functions , and have a good man-machine interface , increase the state of the system failure alarm function , while the software is relatively independent of each module , the degree of coupling between modules , and easy maintenance of the software . Powerful control system CPU , running processing data higher speed , more reliable , and easier to operate . Through the practice of online debugging and production applications , the flying shear transformation projects fully meet the high-speed wire rod project required rapid response , precise cut function, to achieve the desired design requirements . Practice shows that research and design ideas as well as the method is reasonable , practical , certain guiding significance and practical value for Start-stop flying shear control system development . Ramp-up for the the Ping Steel Jiujiang Branch High Line renovation project to lay the foundation for enterprises to obtain the benefits . In this paper, for the renovation project of the flying shear control system hardware and software to analyze and the flying shear Control system control principles and process analysis , flying shear high-speed high-precision operation , modular software design and good people machine interface, the software and hardware in order to achieve a high degree of coupling, simple and convenient operation and maintenance purpose .
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