Study Of The NC Technology Under Net-worked DNC

With the rapid development of Computer network technology and information technology, the manufacturing industry has changed much. Numerical control (NC) technology in networked environment has become an important means for modern enterprises' winning in the competitions. In this paper, it studies the key technologies of networked manufacturing in the workshop through combining the computer technology and manufacturing technology. By the research of the present studies of related technology at home and abroad, and on the basis of the database technology, network communications technology, this paper has built the network structure of the hardware platform, and set up the management plan of the NC technology under net-worked DNC, and designed the software to achieve it. The major contents are including:Firstly, this paper introduces the development of the manufacturing industry and its network manufacturing technology, then brings out the network manufacturing management platform, and discusses the different modules of the platforms in detail.Secondly, it uses networking control protocol conversion method to set up the hardware platform, using high-performance computer as the host, with the serial server to achieve such a protocol conversion function.RJ-45 LAN network port links to the protocol conversion module then connects with CNC machine tools.Finally, this paper designs the software to achieve the integrated management of NC programs, mostly including user management, NC program management, task management, equipment management and machine tools communication models. It focuses on the module of NC programs management, including the NC programs' conversion and query. It has achieved the NC program conversion among different numerical control systems. The task and equipment management module primarily supply the manufacturing information through querying for the workshop production scheduling; machine communication module mainly solves the communication problems between the heterogeneous tools. It proposes to build generic DNC communication system and set different parameters to support the communication between the heterogeneous tools in the same platform.This paper has applied Visual C + + and SQL Server programming to design the system and used NPort5410 from MOXA as serial server, set up a network CNC machining platform, completed the framework design of the platform, achieved the important module of the system, verified the whole network manufacturing. Finally, the article displays the running interface and runs on the FTC-30 multi-function lathe centers and CNC Machining Center to get the desired results.