Study Of CNC Machine Network System

With the computer network and the rapid development of communication technology, digital technology toward intelligent, information technology and network development, manufacturing more flexible automation, integrated and intelligent. In order to increase productivity, reduce costs and facilitate the production and management, must be the development of CNC machine tools networking system.To achieve a computer numerical control machine tools for multiple processing of the upload and download, DNC processing, multiple CNC machine tools to monitor the work of the state (police, processing, processing of non-state), according to remind the maintenance requirements of machine tool maintenance, management Members decide whether or not to lock machine tool operation, machine tool control of editing, that is, processing procedures to protect must be to develop easy-to-use, cost-effective, high-reliability to meet the actual needs of CNC machine tools networking system.Numerical Control Machine Tool Group in the development of the system should address the following questions:1) Parallel processing of multi-taskingFull use of numerical control system with the PLC resources for the completion of each numerical control machine tools to carry out the task of real-time parallel processing.2) Real-timeReal-time means the industry should have a monitoring system, to a limited period of time to respond to external events features. As a real-time system for collecting data in a timely manner of storage, display and alarm equipment and dealing with abnormal situations, real-time system relies on an acceptable delay in the process of dynamic features.3) High reliabilityIn computers, networking systems, numerical control machine tools to work, shop at the scene when the environment changes, through the use of unshielded twisted pair cables, and other measures of hardware and software design and reasonable to ensure the stability of its operation.4) SecurityNetworking system to provide a comprehensive security mechanism, the operators and managers to set different operating authority to ensure the safety of CNC machine tools to normal operation.5) Good maintainability and scalabilityNetwork systems modular design of the development of different modules have different functions, and their relative independence. At the same time from the NC machine tool numerical control systems and restrictions on the number of CNC machine tools, can be carried out to facilitate the expansion.In this paper, CNC machine tools based on the serial networking system program, design principles, software programming and debugging the installation process. One after another of CNC machine tools, CNC system and the interface shows detailed information on RS-232-C interface, as well as PLC, touch-screen principle.Based on the serial port of CNC machine tools networking systems, including network devices: a touch screen, PLC, the composition of the control panel in the control system, control system in the control panel, through RS 232C cable communication with the DNC and computer networking NC Machine tools to connect, each numerical control machine tools, CNC numerical control devices are installed and network control panel, control devices in the control panel by controlling the CNC machine tools and cable network control panel connections.Based on the serial port of CNC machine tool shop network system requires less investment and more effective, reducing the number of links in management, plant managers do not have to live as long as in the control room can monitor the status of each machine's processing as well as the actual working hours and processing The number of parts, machine tools can be required to maintain when the machine locked in a timely manner so as to avoid unnecessary losses; in the management of the processing machine to increase the protection procedure, the operator in the absence of authorization of the machine can not modify the processing procedures, Delete, and other operations to ensure the safety of the processing machine. The machine tool technology program is not the number of restrictions on the type of CNC machine tools from the restrictions, is a affordable.Based on the serial port of CNC machine tools networking system, a set of solutions, through debugging and passed the acceptance and ultimately accepted by users, a full description of the serial port of CNC machine tools based on the network system has been successful.