1、江汉大学机建 学院 2011 年毕业论文 -外文翻译 姓名： 薛斯林 学号： 016507202906 第 1 页 毕业设计（论文） 外文翻译 题目 C620 普通车床数控改造总体方案设计 专 业 名 称 机械设计制造及其自动化 班 级 学 号 09031322 学 生 姓 名 吴皇勇 指 导 教 师 赵学海 填 表 日 期 2013 年 2 月 25 日 江汉大学机建 学院 2011 年毕业论文 -外文翻译 姓名： 薛斯林 学号： 016507202906 第 2 页 The Numerical Control Engine Bed Transforms Harvey B.M ackey F
2、irst 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 labor the tool. It with the humanity these which
3、 in the agriculture, the industry society created only is strengthens the physical labor the tool to compare, got up the quantitive leap, entered the information society for the humanity to lay the foundation. After 6 years, in 1952, computer technology applied to the engine bed , the first numerica
4、l control engine bed were 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 control (NC) stage (1952 1970) The early computer
5、 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 purpose computer to take the numerical control s
6、ystem, is called the hardware connection numerical control (HARD-WIRED NC), Jian Chengwei numerical control (NC). 江汉大学机建 学院 2011 年毕业论文 -外文翻译 姓名： 薛斯林 学号： 016507202906 第 3 页 Along with the primary device development, this stage has had been through repeatedly three generations, namely 1952 first gener
7、ation of - electron 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
8、the numerical control 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
9、 units and the controller, 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
10、. This is because minicomputer 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 machin
11、e reliability was not 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 (personal computer, domestic custom had called microcomputer) the performance has developed to the very high stage, may satisfiedly take the numerical control system core part the request. The numerical control system henceforth entered based on the PC stage.
