Summary: ? The that send admirable climbs the development of Jian NC and characteristic, the introduction is based on DSP the system of open mode CNC that this uses controller to add PC to form, and the development that creates a department to pull by the inkstone acting network that it forms and application. One, the change that the uses CNC technology application of open mode CNCCNC brings unusual profundity for manufacturing industry, but the swift and violent development as computer technology, traditional CNC system also shows his gradually main weak point, namely systematic software is manufacturer all, make traditional CNC system special consequently the gender is strong, versatility is poor, do not make expand at the function an appearance with all sorts of software, newer, difference of difference of software transplanting sex, ability of group net news report and the horizontal requirement to machine tool manufacturer and user are more advanced. The development of modern manufacturing industry, raised taller requirement to CNC system. Look from the function that finish, on one hand CNC system must get used to DNC, CAD/CAM reachs the development of CIMS, the platform; that the software that business of an OK and compositive different development provides suits couplet net to need on the other hand, as in the trend of small lot increases increasingly, and numerical control system is in information, car, metallurgy, spin, presswork, of the industry application such as war industry increasingly grow in quantity, ground of the user demand that needs beard basis differs, rapid, efficient, low cost builds the control system that faces an user. This is had with respect to requirement CNC system modular and match the characteristic in afresh. Look from use angle, new-style CNC system should be applied go up at all sorts of computer software platform, the user that provides unified color is alternant environment, in order to facilitate the operation of the user, safeguard and change. This must try to cast off its to close traditionally with respect to requirement CNC system mode, develop to the direction of open mode. The system of open mode CNC that is based on PC gets used to this development direction just about reflect. NC opens type or PC-NC is to point to the system of open mode numerical control that is based on PC. Specifically, can gaining ground namely model on the operating system of the PC, relaxed use system place matchs the software module in and hardware motion to control plug-in unit card, machine tool manufacturer and user can undertake software is developed conveniently, can increase function and the individuation that realize a function. Here the high speed that traditional CNC system combined PC analyses operation ability, function of high capacity memory, all sorts of business use software prop up, the flexibility of the advantage that graph article shows and group net, make traditional CNC system had open pattern. Open mode CNC is at the beginning of 80 time, began to extend the system of open mode numerical control that is based on PC, but be able to come true till the ability at the beginning of 90 time. The research of system of open mode numerical control only then 1987, air force aids financially next publishing in American government famous " controller of the generation below NGC (Next Generation Controller) " research plan, put forward to open the concept of architecture controller above all, one of serious content of this plan were to put forward " norms of standard of open system architecture (OSACA) " . Begin from 1996, a few big scientific research orgnaizations of American planned to publish corresponding research content respectively to NGC, if be below American navy support, academy of American international standard put forward "EMC(to increase model machine tool controller) " ; Ford and general, Kelaisile put forward in 3 big Motor Corporation and developed by the United States " controller of architecture of mode of OMAC(open mode) " ; of it and European Union " OSACA(. The OSACA project of the European Union is in Germany university machine tool and equipment institute chair Situjiate below, associated heart, meaning, law, luck, flower, the concerned institute that 11 countries wait for on the west, university and mill business, the standard that made system of open mode numerical control is normative, this system is it is standard platform with PC, add the software module of can free combination, build " what do not rely on specific seller is open model controller " structure. What say here " controller " it is device pointing to NC not just, include robot controller, PLC, unit controller to wait however, achieve the free combination of software module. The motion that is based on DSP controls technology and open mode CNC to be in current automation technology, athletic control is representing use the widest and the most complex task. The rate that its reason depends on producing a course is rising ceaselessly, and manufacturing industry raised taller and taller requirement to machining precision and implementation to be made adroitly. Open mode CNC ever the limitation of ability of computation of PC of be enslaved to be enslaved to, make more complex control algorithmic come true hard, block up this kind of system develops to way of high speed, high spirit, but the breakthrough that 80 time end is based on the motion of DSP(Digital Signal Processor) to control a technology, offerred wonderful opportunity to open type CNC, present open mode CNC is with be based on DSP athletic controller is core, the function of shirt-sleeve PLC, with current mood labour accuses PC compositive and into. Also can say, not was based on the athletic control of DSP, do not have the open mode CNC of real significance. Current, the product supplier of athletic controller basically is foreign company, be like company of American Delta Tau, Galil, company of German Dspace, Movtec. Using the athletic controller that is based on DSP to add PC to make the good point of open mode CNC is many sided. Open mode CNC is OK the graphical user interface with powerful WINDOWS, ability of the servo with compatible ability and the athletic unapproachable controller that are based on DSP, interpolation and real time computation combines much task ability and powerful hardware software together, offer the contemporary control of high speed, high spirit and low cost for the user; Besides, in order to be based on the open mode CNC that DSP is core not only shirt-sleeve the function of traditional CNC, and the function that cannot provide traditional CNC. New open mode CNC and traditional CNC see subordinate list quite. Subordinate list: ? NC of car Mo and open mode CNC compare the CNC of project tradition to open the inheritance of type CNC software to roll out new CNC every time quite, software needs to write software to have afresh modular characteristic, raise CNC function to need not adapt the special software that the difficult easy sex that software software develops must use CNC manufacturer to develop, development man-hour amount is huge. The processing that serves as core became partly " camera bellows " . Close with what advanced language and advanced and compositive environment are like software of Visual C++ process designing sexual software is had for CNC manufacturer, it is difficult that machine tool manufacturer and user reflect manufacturer of machine of its independent character and user to be able to develop the net of application software group that has individual character easily hard because easy sex includes manufacturer special hardware and communication method, couplet net cost is high, special device and bus line of special technology spot still need to be like CAN when couplet net, PROFIBUS and the network such as INTERNET easily wire side of real reason group needs to develop appropriative hardware to come to prospective sex the progress of follow technology, open sex is modular after be being sowed relatively commonly, standardization, facilitate application of diversity of simplification of development system function and sexual price are compared 2 times apply to machine tool industry, sexual price has been compared apply to include machine tool industry inside all mechanical industries, and sexual price uses special servo interface than good exercise executive section, the product that can use specific manufacturer only uses the servo interface of standardization, generalization, can choose actuating device and function of electric machinery CNC neatly 3 axes or much axis interpolation, rate is rapid much axis drive, much axis interpolation, rate is rapidder at present, business of foreign CNC development is developing CNC of afore-mentioned open mode actively, be called system of the 6th acting numerical control. Our country also begins to introduce this technology of late, still be in at present recommend digestive level, owning the system from foregone knowledge property right in development. 2, technology of network of contemporary network production technology and manufacturing industry by go up what narrating open mode CNC is the numerical control system that is based on PC PC, network technology is called again the 3rd milepost of computer phylogeny, people says the network is the computer, the effect with reflected a network deeply very main in computer phylogeny and influence. The rapid development of the internet INTERNET with the LAN of local area network that 80 time produce 20 centuries as the development of badge machine and the greatest whole world, the computer already was the equipment with an isolated stage no longer, it already made connection the fundamental facilities of whole society, and changing the life of people and producer style with tremendous impetus. From this the network enters manufacturing industry to should be belonged to inevitable, it gives manufacturing industry this one tradition the industry brings a brand-new progress, and more and more do not show the advantage that gives it. Abroad has saying the network enters a workshop is " the great revolution of plant process " consequently the network of example of modern production technology makes this one mode what already valued for manufacturing industry more and more and try to use. The network makes what region can cross between the enterprise that is use network in the expression on broad sense and enterprise be designed in coordination, make in coordination, information is shared, long-range monitoring and long-distance service; The content such as the supply between enterprise and society, sale, service. On narrow sense expression is the network of enterprise interior, the management department enterprise interior (produce, offer, sell, person, money, content) , design a section (CAD/CAM/CAPP/CAE) , produce a section (manufacturing management, production is monitored, knife, clip, quantity, data management, equipment management) support in network database. The application of these technologies makes the manufacturing efficiency of manufacturing industry rises greatly. If was in what what revealed on exhibition of Chicago international machine tool 2000 to use the numerical control machine tool of network technology but the utilization rate the machine tool from 25% rise 65% ; Be like only then the limited company of machine tool of Ningxia small giant that was built in May 2000 (our country and company of gram of Japanese Shan Qi campstool are joint-stock build) used MAZAK intelligence network to create pattern, 135 people of company employee, year manufacturing vertical machining center and numerical control machine tool 420, production value of average per capita amounts to above of 1.6 million RMB, main profit from used so tall production efficiency intelligent network makes a system. Open mode CNC and network are made in contemporary network production environment, machine tool (here points to numerical control machine tool, machining center, flexible production unit) already was isolated treatment facilities no longer, systematic MRP management information system is designed with CAD/CAM/CAPP/CAE project below network environment however the node that direct connective has process capability, it should design the news report of join of relevant and external environment such as the system through network and management information system, project, must come true mutual the two-way communication between. Administrative information computer can give random machine tool of a numerical control send treatment statement, can examine in real time again every status of the machine program of the machine tool, treatment, handling time, fault signal, at the same time every the machine tool also can report a case to administrative information computer, the circumstance that machines for example and result, qualification tastes those who reach reject a number, so that manage information computer to analyse a problem, solve a problem, implementation trends reframes treatment course. The project designs the computer to create CNC machine program with CAD/CAPP/CAM technology, convey to undertake CNC Machining to the machine tool through the network. Implementation is changed without paper make. Current and traditional CNC system does not have function of direct couplet net commonly, because this wants to adopt numerical control system the dot to arrive first,bit of serial communication circuitry and general purpose computer join (use the serial interface) such as RS232 or RS485 normally, the PC connection that will have couplet net function again next goes to the local area network, in this kind of plan, although used PC to realize the couplet net of CNC as bridge, but the serial communication rate between CNC and PC is low, dependability is poor, become the bottleneck that the information in the system delivers. Increased PC on the other hand, enlarged systematic hardware dimensions, raised systematic cost not only, and increased fault rate, the dependability that gives a system brings adverse effect. Be based on the system of open mode numerical control of PC, because used the operating system of the hardware of standard PC and standard, its itself had the capacity of direct group net, it made a system provide a best platform to the network, the network that had it to just have real sense makes a system, be a perfect pair. In the open mode CNC that is based on PC, because use hard disk to regard the memory that processes code as carrier, on the hard disk that makes CAD/CAM calculative machine program can pass standard network to transmit CNC, network speed of the standard is in commonly a few Mbps(RS232, the serial interface such as RS485 has a few Kbps) only commonly, make data transmitted speed to raise thousands of times, transmit the dependability that made sure the system is transmitted before treatment one times. The size as a result of hard disk is large, read keep rate fast, although about a hundred million 0. The code of straight line segment of 01mm length space, CNC also can be achieved in the treatment speed when pulse equivalent is 1 μ minutely about a hundred meters. This is the system of conventional numerical control that uses the serial interface such as RS232 far the rate that cannot achieve, solved the treatment problem of the high speed high accuracy that large order measures so, at the same time needless also with curved surface and batten interpolation, reduced the burden of CAD/CAM system. If raise resolution,arrive 0.
When 1 μ , the treatment speed of CNC also can be achieved minutely more than 10 meters, greatly flowing the mobile quantity of the machine tool, improved treatment the surface is bright and clean degree, decreased to process exterior error, realize expensive precision work of factory high speed. The progress that the network makes a system be in our country and apply 20 centuries since 90 time, below the support of network technology, be in after that in the United States above all other developed country, network production system creates a company adroitly development is swift and violent, the college of our country and scientific research branch and enterprise also forward this way develops, at present our country IT and network apply in contemporary production company place at developing pattern 4 kinds below: Its feature is the applied phase of unit technology, the computer is used, software is used, numerical control equipment all is dispersive, information is not straightforward interactive information Gu island. Incorporate is: Management department uses the special software such as such as finance affairs, human affairs, sale, storeroom respectively by function; Design branch uses the software such as CAD, CAPP, CAM respectively; In production the branch uses all sorts of numerical control and automation device. Be in the business that does this one mode to cover a range very wide, many company application already had longer the history and certain level. Its feature is local and compositive phase, build a local area network, each dispersive application the unit has by the branch compositive, but the segregation that still is put in iformation flow to connect and information bottleneck. Incorporate is: Management department and design branch build unified platform respectively, database, use business to use respectively compositive change software system, includes function but this branch; is producing coping sectional performance amount to accuses equipment couplet net and even workshop class government. This kind is applied already was known for many company place gradually and apply, but time is not long, it is a demand is at present most kind. Of enterprise interior comprehensive and compositive change build large database, share interconnection of each function branch, information. original pyramid administrative pattern undertakes compressed change, reduce intermediate segment. The business that at present home can obtain this one mode is few, have not reach mature level. Attached drawing achieves the network of broad sense to produce level, namely enterprise and enterprise, between enterprise and society interconnection, information is shared at present home has extremely individual business to begin to enter this one mode only, be like limited company of machine tool of peace answer small giant. It is with limited company of machine tool of Ningxia small giant now exemple (see attached drawing) , this factory is called by people manufactory of intelligent network machine tool, and the alleged intelligence that its manage builds whole company changes a network, it is aether net. The numerical control machine tool of workshop of this company machining and FMS all used open mode CNC, can connect with aether net directly receive, pass aether net and process designing of responsible numerical control, production to attemper above all, the computer of management of cutting tool clamping apparatus and process monitoring is linked together, realize a workshop what one class makes a process is compositive. Go further on this foundation the other subsystem such as the CAD of net of aether of have the aid of and company, MRP is linked together, the news that has whole company is compositive. Next the resource between enterprise of implementation of repass INTERNET net is shared, combine and begin electronic business affairs. This factory is called factory of machine tool of network of the 2nd intelligence of world. When just when a lot of research organizations are returned now,undertaking experiment and attestation to this chess type, company of small giant machine tool already was mixed in whole production in running a course, make faultlessly IT (IT) and traditional manufacturing industry (MT) photograph is united in wedlock, took the lead in showing the model that a network makes. 3, the last word development as computer technology, the software support that is based on PC already became better day by day and mature.
The operating system has good reliability, compatibility and open sex, traditional CNC will is based on finally the place of open mode CNC of PC is replaced, this is inevitable, we should seize this moment, the tide that technology of numerical control of follow closely world develops, try hard to catch up narrows then the difference that leads city and advanced nation in numerical control. Manufacturing industry is the foundation of national economy, the success that the core of modern production technology is the computer and network technology is occupational, production technology of developed country network, fictitious make, development of brisk production business is swift and violent. In the industrial development direction that before long American government announces before, mix the operating system of the general purpose computer clearly already hardware structure is compatible two when serve as production technology serious content. Can you expect: ? Brag attack Qian cling to does of Xue of border of Liu of garden of of Na Ran of busy of obstruct of С of Chuo of Ke border invade Ji of stew of garden Bao grieve to inspect κ humorous > is of male Cheng Xi joyous is of captive of triangular bream of virtuous shoot a glance at punishs Shan of of magnesian conspicuous ⒄ of head of unconscious Jing? CNC Milling
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