As CAD/CAM unifinication technology and technology of local area network gain ground and apply, at present most enterprise weaves in development of new products plan, process and got rising apparently on the efficiency of to program of numerical control machine tool and quality, the technical management of the enterprise and manufacturing management had entered network period. The main problem before net of couplet of machine tool of 1 numerical control1. 1 program transmits a respectOpposite to demand of volume of a few programs less numerical control machine tool, it is to use the most primitive manual clavier to input means all the time, the malady of this kind of method is: Efficiency is low; Take up grow when machine; Easy make mistake. And the numerical control machine tool with larger amount of input of a few orders, use computer of a table to be put in machine tool edge to be used technically at the program to transmit. The defect of this kind of method is: 1.1.1 environments are harsh, the computer safeguards difficulty. 1.1.2 communication software is DOS version, upgrade replacement is difficult. A 1.1.3 computer is aimed at machine tool of a numerical control, equipment resource is wasteful. 1.1.4 operation method are complex, tall to the quality requirement of handlers. 1.1.5 much people operate a computer, the management of program document is confused. 1. 2 programs run a sideTo make program name and part drawing date mutual and corresponding, must person specially assigned for a task is in charge of having record government to the program, this job makes mistake multifariously, easily. The manufacturing efficiency that affecting treatment of my company numerical control badly, accordingly urgent need searchs a kind of effective method that improves current situation of numerical control machine tool, have the government of systematization to its. 2 make a solution in the light of the problemThrough undertaking many sided survey, think at present my company in-house local area network had expanded certain scope, its are CAD/CAM unifinication application is already special and general, because machine tool of this numerical control takes the way of network management,be to solve always optimal choice. 2. The composition of 1 systemSystem of network of machine tool couplet includes: Network server; Line of local area network; CAD/CAM computer; CNCLINK-4. 0 management system; Couplet network system advocate accuse machine; Long-range communication interface; Telecommunication cable; Numerical control machine tool. Among them system of line of network server, local area network, CAD/CAM and several control machine tool are the resource that the enterprise already existed; Machine of CNCLINK-4.0 system government is one installed couplet network the computer of industrial level PC of special software, can, client government upright software installs an any computers in the local area network, moving UNIX operating system, its action is accept each workstation attemper, send a statement to all numerical control machine tools on the network, realize the centralized management of machine tool information; Equipment of long-range communication interface is special at advocate the much alloter stringing together a mouth that accuses the communication between machine and machine tool, its characteristic is implementation is transmitted remotely and can not have signal loss; Telecommunication cable is common cable of 4 core screen, two end add photoelectricity isolator in order to avoid at faze signal. 2. The main function of system of network of couplet of 2 machine toolsThe 2.2.1 situations that cast off manual input program and stand-alone input program thoroughly, realize Sunday run to be transmitted from traverse foreword. The 2.2.2 PCs that are used at management can set any positions in the local area network, do not suffer the effect of the distance, and advocate the farthermost distance that charges machine tool of machine space numerical control allows to achieve 1500m. 2.2.3 collateral transmission programs, namely advocate accuse machine is OK face my unit at the same time: At present machine tool of 16 numerical control undertakes data corresponds. 2.2.4 operations are simple, need not have the aid of is other the help of equipment or process designing personnel, jockey person inputs relevant statement on the operation face plate of the machine tool, can upload or download spare parts machine program. 2.2.5 advocate control machine 24h job, the numerical control machine tool that goes up to the network at any time carries out management and data communication, 3 when won’t affect a machine tool fall or holiday works overtime move. 2.2.6 transmission reliability are high, know exactly about sth of special software itself occupies desired result function, won’t appear commonly in transmission process so mistake, if wrong computer calls the police instantly,special situation falls. Software has the examination function that upload and downloads a file at the same time, an examination file all can be returned after every file uploads, ensure the safety of data. 2.2.7 programs can realize long file name to manage on WINDOWS platform, can realize the administrative way with file name and spare parts uniform number thereby, changed what program name manages to NC program to manacle thoroughly. Name of the date that the transmission log function of software of 2.2.8 have the aid of can examine data to transmit, time, file, upload or the content such as download, the unit process of cargo bandling of handlers of record of in order to and make mistake information. Machine tool of every 2.2.9 numerical control all can be visited or download the NC program below this machine tool catalog and public directory. 2.2.10 pairs have the numerical control system of DNC function, DNC treatment can come true on the network. Amount of net of couplet of machine tool of 2.2.11 numerical control is unlimited. Can see from inside systematic sketch map, couplet network system advocate accuse machine it is to install what go up in company local area network, it is OK on the net to be told from the principle installation is many more aleatoric advocate accuse machine, and every advocate accuse machine can connection machine tool of 32 numerical control. The effect after 3 plan are carried outAfter realizing net of couplet of numerical control machine tool, my company transmitted a respect to have clear improvement in management of numerical control program and program. After net of couplet of numerical control machine tool, rely on special network to govern the function of software, all programs that had woven all are put in fall at the catalog of every machine tool to Gao Shuiping, every program weaves according to part drawing date name, won’t produce the phenomenon that weigh a name, the process that handlers understands a network to go up through the instruction at any time downloads use. Contrast of couplet net around has below a few apparent change: 3.1 shorten the time of transmission program, namely managing the charge when machine of expensive numerical control machine tool. 3.2 accuracy are tall, part program repeats when using although be transmitted afresh,also can assure absolutely and correct. Bring down of intensity of 3.3 handlers labor, need to inputted simple instruction to finish a program to transmit in machine tool face plate only. 3.4 it is easy to revise, if the program that uses first undertook modification in the spot, after uploading, can offer call next time. 3.5 program management came true to unite change. 3.6 responsibility are clear, once appear problem, very easy analysis gives process designing reason or handle an account. 4 conclusionThe system of network of couplet of machine tool of CNCLINK4.0 numerical control that at present we run is to be based on the network system that RS232 strings together a communication technology and builds, as the development of numerical control machine tool, had the numerical control system that runs on aether net to receive wide application gradually, because of the net of couplet of numerical control machine tool this henceforth systematic general and the local area network with interior company make a centralized system, its are safeguarded will become more quick and convenient with management.