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1、英文翻译The Numerical Control Engine Bed TransformsFirst numerical control system development summary brief history and tendency In 1946 the first electronic accounting machine was born in the world, this indicated the humanity created has been possible to strengthen and partially to replace the mental
2、labor the tool. It with the humanity these which in the agriculture, the industry society created only is strengthens the physical labor the tool to compare, got up the quality leap, entered the information society for the humanity to lay the foundation. After 6 years, in 1952, computer technology a
3、pplied to the engine bed, the first numerical control engine bed was born in US. From this time on, the traditional engine bed has had the archery target change. Since nearly half century, the numerical control system has experienced two stages and six generation of development. 1.1 Numerical contro
4、l (NC) stage (1952 1970) The early computer operating speed is low, was not big to then science computation and the data processing influence, but could not adapt the engine bed real-time control request. The people can not but use numeral logic circuit to build to become an engine bed special purpo
5、se computer to take the numerical control system, is called the hardware connection numerical control (HARD-WIRED NC), short for numerical control (NC). Along with the primary device development, this stage has had been through repeatedly three generations, namely 1952 first generation of - electron
6、 tube; 1959 second generation of - transistor; 1965 third generation - small scale integration electric circuit. 1.2 Computer numerical control (CNC) stage (in 1970 present) In 1970, the general minicomputer already appeared and the mass production. Thereupon transplants it takes the numerical contr
7、ol system the core part, from this time on entered the computer numerical control (CNC) the stage (which should have computer in front of the general two characters to abbreviate). In 1971, American INTEL Corporation in the world first time the computer two most cores part - logic units and the cont
8、roller, used the large scale integrated circuit technology integration on together the chip, called it the microprocessor (MICROPROCESSOR), also might be called the central processing element (to be called CPU). The microprocessor is applied to 1974 in the numerical control system. This is because m
9、inicomputer function too strong, controlled an engine bed ability to have wealthily (therefore once uses in controlling the multi- Taiwan engine bed at that time, called it group control), was inferior to used the microprocessor economy to be reasonable. Moreover then small machine reliability was n
10、ot ideal. The early microprocessor speed and the function although insufficiently are also high, but may solve through the multi-processor structure. Because the microprocessor is the general-purpose calculator core part, therefore still was called the computer numerical control. In 1990, PC machine
11、 (personal computer, domestic custom had called microcomputer) the performance has developed to the very high stage, may satisfyingly take the numerical control system core part the request. The numerical control system henceforth entered based on the PC stage. In brief, the computer numerical contr
12、ol stage has also experienced three generations. Namely 1970 fourth generation of - minicomputer; 1974 five dynasties - microprocessor and 1990 sixth generation - (overseas was called PC-BASED) based on PC. Also must point out, although overseas already renamed as the computer numerical control (nam
13、ely CNC).Also must point out, although overseas already renamed as the computer numerical control (namely CNC), but our country still the custom called the numerical control (NC). Therefore we daily say numerical control, the materially already was refers to computer numerical control. 1.3 The numer
14、ical control future will develop tendency 1.3.1 Open style continues to, to develop based on the PC sixth generation of direction The software and hardware resource has which based on PC is rich and so on the characteristic, the more numerical controls serial production factory can step onto this pa
15、th. Uses PC machine to take at least its front end machine, processes the man-machine contact surface, the programming, the associationQuestion and so on net correspondence, undertakes the numerical control duty by the original system. PC machine has the friendly man-machine contact surface, will po
16、pularize to all numerical controls system. The long-distance communication, the long-distance diagnosis and the service will be more common. 1.3.2 Approaches and the high accuracy development This is adapts the engine bed to be high speed and the high accuracy direction need to develop. 1.3.3 Develops to the intellectualized direction Along with the artificial intelligence in the computer domain unceasing seepage and the developm
