數(shù)控專業(yè)畢業(yè)設(shè)計(jì)外文翻譯---數(shù)控系統(tǒng)發(fā)展簡(jiǎn)史及趨勢(shì)-數(shù)控設(shè)計(jì)(已修改)
2025-06-01 01:33 本頁(yè)面
【正文】 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。 1959secondgeneration transistor。 1965 third generation small scaleintegration electric circuit. To 1970, the general miniputer already appeared and the massproduction. Thereupon transplants it takes the numerical controlsystem the core part, from this time on entered the puter numericalcontrol (CNC) the stage ( which should have the puter in frontof。 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 reasonable. Moreover then smallmachine reliability was not ideal. The early microprocessor speed andthe function although insufficiently are also high, but may solvethrough the multiprocessor structure. Because the microprocessor isthe generalpurpose calculator core part, therefore still was calledthe puter numerical control. To in 1990, PC machine (personal puter, domestic custom had calledmicroputer) the performance has developed the very high stage, maysatisfiedly take the numerical control system core part the numerical control system henceforth entered based on the PC stage. In brief, the puter numerical control stage has also experiencedthree generations. Namely 1970 fourth generation of miniputer。1974 fifth generation of microprocessor 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
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