NC Machining On Network And The Research And Application Of DNC Integrated Manufacturing Technology

The fast development of computer network and information technology brings continual innovation of manufacturing. NC Machining on Network has been one of important method to enhance competition. The article analyzes and compares domestic-overseas present status of the correlation technique, bases on database, local area network, field bus technique etc, researches the constitution and contact method of NC Machining on Network and DNC integrated system, designs the plat software that realizes the function of integratting with CAD/CAM system, database management and communication, And puts forward executive plan. The system hardware of the article regards high-powered microcomputer as main body, CAN field bus adapter and converter, network adapter as communication interface. It includes both the extensive used economy NC machining tool and possessed DNC interface NC machining tool, realizes communication between NC machining tool and DNC computer, between DNC computer and LAN or even internet.2 The system operating software is realized from three aspects: assistant NC programme, database management, and realtime communication. This software regards Windows 2000 as operating deck, C++ builder6.0 as foreground development tool, Microsoft SQL server 2000 as background database. Platform software can integrate others CAD/CAM software, edit automatic generated NC programme and log them in database. At the same time, the software realizes CAN network communication by means of programming to CAN intelligent interface card, setting the parameter to converter, that makes DNC computer can transit data with numerical control equipment in industry scene each other. This system also has functions, such as NC file management, equipment management, initializing system, etc. The operating software has friendly man-machine interface, operates simply, improves the production efficiency of enterprises and automatic level effectively. The system has strong expansibility, fine portability, which lays a very good foundation to integrate with other systems such as FMS, CIMS, etc afterwards further. It has extensive application prospect and higher practical value.