數(shù)控專業(yè)畢業(yè)設(shè)計外文翻譯---數(shù)控系統(tǒng)發(fā)展簡史及趨勢-數(shù)控設(shè)計-全文預(yù)覽
【正文】 roprocessor and 1990 sixth generation (overseas was called PCBASED) based on PC. Also had to point out, although overseas already renamed as theputer numerical control (namely CNC), but our country still thecustom called the numerical control (NC). Therefore we daily say Numerical control In the essence already refers to Computer numerical control . The numerical control future will develop tendency open style continues to, to develop based on the PC sixthgeneration of direction Open, the low cost, redundant reliable, the software andhardware resources has which based on PC is rich and so on thecharacteristic, the more numerical controls serial production factorycan step onto this path. At least uses PC machine to take its frontend machine, processes question and so on manmachine contact surface,programming, working correspondence, undertakes the numericalcontrol duty by the original system. PC machine has the friendlymanmachine contact surface, will popularize to all numerical controlssystem. The longdistance munication, the longdistance diagnosisand the service will be more mon. 2. approaches high speed and the high accuracy development This is adapts the engine bed to be high speed and the highaccuracy direction need to develop. 3. develops to the intellectualized direction Along with the artificial intelligence in the puter domainunceasing seepage and the development, the numerical control systemintellectualized degree unceasingly will enhance. (1) applies the adaptive control technology The numerical control system can examine in the process someimportant information, and the automatic control system relatedparameter, achieves the improvement system running status the goal. (2) introduces the expert system instruction processing The skilled worker and expert39。附 錄 Numerical control system development brief history andtendency In 1946 was born in the world the first electronic accounting machine,this indicated the humanity created has been possible to strengthenand partially to replace the mental labor the tool. It with thehumanity these which in the agriculture, the industry society createdonly is strengthens the physical labor the tool to pare, got up thequantitive leap, entered the information society for the humanity tolay the foundation. After 6 years, namely in 1952, the puter technology applied on theengine bed, were born the first numerical control engine bed in this time on, the traditional engine bed has had the archerytarget change. Since nearly half century, the numerical control systemhas experienced two stages and six generation of development. The early puter operating speed is low, was not big to then scienceputation and the data processing influence, but could not adapt theengine bed realtime control request. The people can not but usenumeral logic circuit Builds Bees an engine bedspecial purpose puter to take the numerical control system, iscalled the hardware connection numerical control (HARDWIRED NC), iscalled for the numerical control (NC). Along with the primary devicedevelopment, this stage has had been through repeatedly threegenerations, namely 1952 first generation of electron tube。 General Two characters have abbreviated). To 1971, AmericanINTEL Corporation in the world first time the puter two most corespart logic units and the controller, used the large scaleintegrated circuit technology integration on together the chip, calledit the microprocessor (MICROPROCESSOR), also might be called thecentral processing element (to be called CPU). The microprocessor is applied to 1974 to the numerical control is because miniputer function too strong, controlled an enginebed ability to have wealthily (therefore once uses in to control manyengine beds at that time, called it group control), was inferior toused the microprocessor economy to be reason
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