外文翻译-数控机床改造（中文共计9500字）
毕业设计（外文翻
译）
题目 数控车床无级变速主轴箱设计
专 业：
学 生 姓 名：
班 级：
学 号：
指 导 教 师：
完 成 时 间：
The Numerical Control Engine Bed Transforms
First 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 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 applied 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 control (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 purpose 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 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 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
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. 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 machine 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
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 control 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 (namely 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 numerical 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
path. Uses PC machine to take at least its front end machine, processes the man-
machine contact surface, the programming, the association
Question and so on net correspondence, undertakes the numerical control duty by
the original system. PC machine has the friendly man-machine contact surface, will
popularize 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 development, the numerical control system intellectualized degree
unceasingly will enhance.
(1) Applies the adaptive control technology
The numerical control system can examine in the process some important
information, and the automatic control system related parameter, achieves the
improvement system running status the goal.
(2) Introduces the expert system instruction processing
The skilled worker and expert's experience, the processing general rule and the special
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毕业设计（外文翻译）题目数控车床无级变速主轴箱设计专业：学生姓名：班级：学号：指导教师：完成时间：TheNumericalControlEngineBedTransformsFirstnumericalcontrolsystemdevelopmentsummarybriefhistoryandtendencyIn1946thefirstelectronicaccountingmachinewasbornintheworld,thisindicatedthehumanitycreatedhasbeenpossibletostrengthenandpartiallytoreplacethement...
作者：闻远设计
分类：课程设计课件资料
价格：10光币
属性：17 页
大小：85.5KB
格式：DOC
时间：2022-10-21
