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1、12009 届学生毕业论文（设计） 存档编号：_毕业论文外文翻译题目：数控技术及其产业发展 部 （系） 机械与建筑工程学部_专 业 机械设计制造及其自动化姓 名 彭伟雄学 号 20051503010109指导教师 李 列2009 年 月 日21. About numerical control system design development gaugeAs noted previously, there are better commonability , flexibility , adaptability , expanding in the open numerical contro
2、l system, countries such as U.S.A. , European Community and Japan ,etc. implement the strategic development plan one after another , carry on research and formulation of the systematic norm of structural numerical control of the open system (OMAC , OSACA , OSEC ), 3 of world heavy economy carry on t
3、he same science plan and standardize formulation nearly in a short time most, have indicated a new arrival of period of change of the technology of numerical control. Our country started research and formulation which standardized the frame of ONC numerical control system of China too in 2000.2 .Abo
4、ut the numerical control standardThe numerical control standard is a kind of trend of information-based development of manufacturing industry. Numerical control technology information exchange of 50 year born , to based on ISO6983 standard, adopt G , M code describes how processes, its essential cha
5、racteristic faces the processing course, obviously, he cant meet demands of high-speed development of the technology of modern numerical control more and more already. For this reason, studying and making a kind of new CNC system standard ISO14649 (STEP-NC ) in the world, its purpose is offering a k
6、ind of neutral mechanism not depending on the concrete system , can describe the unified data model in whole lifespan of the products , thus realize the whole manufacture process, and even the standardization of each industrial field product information.The appearance of STEP-NC may be a revolution
7、of the technical field of the numerical control, on development and even the whole manufacturing industry of the technology of numerical control , will exert a far-reaching influence. First of all, STEP-NC puts forward a kind of brand-new manufacture idea , in the traditional manufacture idea, NC pr
8、ocesses the procedures to all concentrate on single computer. Under the new standard, NC procedure can be dispersed on Internet, this is exactly a direction of open , networked development of technology of numerical control. Secondly, STEP-NC numerical control system also can reduce , process (about
9、 75% ) drawing , process procedure work out (about 35% ) time and process (about 50% ) time greatly.At present, American-European countries pay much attention to the research of STEP-NC, Europe initiates IMS plan (1999.1.1- 2001.12.3 ) of STEP-NC. 20 CAD/CAM/CAPP/CNC users , manufacturers and academ
10、ic organizations from Europe and Japan participated in this plan. STEP Tools Company of U.S.A. is a developer of the data interchange software of manufacturing industry in the global range, he has already developed and accused of the super model (Super Model ) of information exchange of machine tool
11、ing by counting, its goal is to describe all processing courses with the unified norm. Such new data interchange form has already been verified in allocating the SIEMENS , FIDIA and European OSACA-NC numerical control at present.33Pairs of basic estimations of technology and industry development of
12、numerical control of our countryThe technology of numerical control of our country started in 1958, the development course in the past 50 years can roughly be divided into 3 stages: The first stage is from 1958 to 1979, i.e. closed developing stage. In this stages, technology of foreign countries bl
13、ockade and basic restriction of terms of our country, the development of the technology of numerical control is comparatively slow. During Sixth Five-Year Plan Period , the Seventh Five-Year Plan Period of the country in second stage and earlier stage in the Eighth Five-Year Plan Period , introduce
14、technology , digest and assimilate, the stage of establishing the system of production domesticization arisesing tentatively. At this stage , because of reform and opening-up and national attention , and study the improvement of the development environment and international environment, research , d
15、evelopment and all making considerable progress in production domesticization of the products of the technology of numerical control of our country. The third stage is that on the later stage in the Eighth Five-Year Plan Period of the country and during the Ninth Five-Year Plan Period , implement th
16、e research of industrialization , enter market competition stage. At this stage, made substantive progress in industrialization of the domestic numerical control equipment of our country. In the Ninth Five-Year Plan latter stage, domestic numerical control domestic market share of lathe reach 50% , mix domestic numerical control system (popular ) to up to 10%.Review the development course in the past 50 year
