1、 英语原文： CAD/CAM is the technical expression, indicates the computer-aided design and the computer aided manufacturing.This is one item in the design and the production, carries out certain function technology about the use computer data.This technology is completing the design and the production dire
2、ction to the place develops.In these two traditions was considered is in the production process out of the ordinary, independent function.In brief, CAD/CAM will be able to provide the technology base for the future complete computer production. Looked from the computer science angle that, the design
3、 and the manufacture process is one has, processing, the exchange and the management process about the product information.The people use the computer to take the main technical method, from forms in one'；s mind to the product to put in the market in the entire process information to carry on the
4、 analysis and processing, produces and utilizes each kind of numerical information and the graph information, carries on the product the design and the manufacture.The CAD/CAM technology is not the traditional design, the manufacture flow method simple reflection, also is not limits in the partial u
5、se computer takes the tool in the individual step or the link, but is unifies the computer science and the project domain specialized technology as well as human'；s wisdom and the experience take the modern scientific method as the instruction, in the design, in the manufacture entire process eac
6、h completely manager, as far as possible use computer system completes the work which these duplication high, the labor big, the computation complex as well as depends on purely artificially completes with difficulty, but assists must replaces the engineers and technicians to complete the entire pro
7、cess, obtains the desired effec The CAD/CAM system as well as plans the hardware, the software for supports the environment, (subsystem) realizes through each function module to the product description, the computation, the analysis, optimized, the cartography, the technological process design, the
8、simulation as well as the NC processing.But the generalized CAD/CAM integrative system also should include aspects and so on production plan, management, quality control.Since 1946 first electronic accounting machine has been born in US, people on unceasing computer technology Introduces the machine
9、 design? Manufacture domain.As early as in the 50'；s, for the first time develops successfully the numerical control engine bed, may realize through the different numerical control procedure to the different components processing Afterwards, Massachusetts Institute of Technology'；s servo labor
10、atory succeeds with the computer manufacture numerical control paper tape, has realized the NC programming automation.In this foundation, the people proposed the following tentative plan: The APT software is feeds the path method realization computer assistance programming through the description, t
11、hat, can not describe feeds the path, but is direct description components itself? From this has had the CAD initial concept.The entire 50'；s, the electronic accounting machine also is in the electron tube time, uses the machine language programming, the computer mainly uses in the science comput
12、ation, also only has the output function for it disposition graph equipment.CADCAM system basic composition CAD/CAM system hardware disposition CAD/CAM system software composition CAD/CAM system software disposition Computer aided manufacturing (CAM) may define for uses the computer system to design
13、, to manage and controls a productive plan the movement, through direct or indirect planned production resources computer contact surface.If defines states, the computer aided manufacturing application has 2 big aspects: 1) computer supervisory control.This is the direct application, the computer wi
14、th the production process connection, uses in supervising directly and the control production process 2) produces the support application.This is the indirect application, middle the productive plan, the computer uses in supporting the production operation, but is not the computer and the production
15、 process links directly. Charting productive forces increase The CAD/CAM system may undertake the one whole set new charting theory to be able to strengthen the productivity.Again completes next step, keeps firmly in mind the entire design to be possible to store up the system.When the planner recei
16、ves one with has saved the blueprint specification similar work piece, he only must recollect, and adjusts it the work storage place, revises in the original blueprint not to conform to a new work piece request part, productivity enhances.The original work piece efficiency enhances, but this can enh
17、ance the next step working efficiency.This is a complete at times renewal database support, can facilitate the user to use Improve mapping analysis The charting analysis is another important work, it can by certain synthesize the CAD/CAM system automatic operation.This in pipeline design, in particu
18、lar an important application.The pipeline design paper very is usually complex moreover must conform to the precise industry specification. The other gifted CAD/CAM also can affect a company in other aspects the project system.It can enhance the entire physical process the efficiency, the permission
19、 present project plan and the report procedure appraisal.CAD/CAM can improve improves the quality of the product the guarantee technology.It can automatic accurate and the integrity document material, the maintenance partial data accurate and bill of materials accurate. Deficiency CAD/CAM insufficie
20、nt spot not that obvious, but they can destroy even the most perfect design, the biggest shortcoming is only can directly skips from the manual charting and the record preservation to CAD/CAM, the elephant installs a set of jet engine in the populace automobile.The automobile possibly can run quick
21、somewhat, but if the foundation enhancement has not coordinated the heavy pressure, the entire automobile can disperse the frame. CAD/CAM application SKETCHPAD, the CAD/CAM technology has passed through very long chi.It is already applied in the middle of each widespread industry.It uses in each asp
22、ect, controls from the airplane to the weapon research, manufactures from the map to the movement medical service, from circuit analysis to building steel analysis.CAD/CAM is being applied in each kind of charting and the production, installs the schematic diagram from the movie to the large-scale l
23、ong-distance monitoring direct set battleship, its application to is developing variously. Now CAD/CAM market. Now in the market has four kind of different CAD/CAM sellers.First is some subordinate companies sells comes from a big enterprise part or the branch CAD/CAM technology.The IBM CAD/CAM bran
24、ch is an example.If belongs to Mc-Donnell-Douglas McAuto； Belongs to General Electric Lalma, with belongs to Schlumberger Applican, if the multi-large number CAD/CAM subordinate company the main corporation has the massive service intercourse, not only sale supervisory system moreover when one'；s
25、 position is lowly one'；s words carry no weight service office.When they control the massive accounts also with provides the service, these companies on in optimum condition, because they may extract the massive profits.But they must undertake the complex administrative chain of command, this obs
26、tructs in them makes the fast response to the market tendency, or their itself studies and outside the development department, the merge improves on again their new production line the new technical development CAD/CAM technology and the product development road of future After many year promotions,
27、 the CAD technology already widely applied in professions and so on machinery, electron, astronautics, chemical industry, building.Played using the CAD technology enhanced the enterprise the rated capacity, the optimization design proposal, reduces technical personnel'；s labor intensity, reductio
28、n design cycle, beefed-up design roles and so on standardization.In recent years, our country CAD technology development and the application have obtained the considerable development, besides has carried on sinicizing and the re-development to many overseas softwares, but also was born many had the
29、 independent copyright CAD system, If high Chinese CAD, opens item CAD and so on, because these software price is cheap, conforms to our country national condition and the standard, therefore has received widespread welcome, has won the more and more big market share. But, our country CAD/CAM software no matter is from the product development level from the commercialization, the marketability degree all has not the small disparity with the developed country.Because the overseas CAD/CAM software appears early, the development and the application time is also long,
