Development of CNC machine數控專業(yè)英語論文

1、development of cnc machineabstract chinas manufacturing must be from a big country to power, from low to high, from made in china to created in chinas transition. manufacturing technology to achieve this transformation, first, to high-tech, the second is to upgrade technology. cnc machine tools is t

2、he key to modern manufacturing equipment, countrys output of cnc machine tools and technology in a way representative of the national manufacturing technology level and competitiveness.history of the development of cnc in 1948, the u.s. company parsons raised conceived that the computer-controlled m

3、achine tools is possible. in 1952, the first successful trial by the large vertical profiling machine refitted coordinate cnc milling machine. soon began formal production, formally put into use in 1957. 1959, and the transistor element is made of a printed circuit board, so that the cnc device into

4、 a second generation. after 1960, cnc drilling and milling machine developed rapidly, so cnc machine tools in machinery manufacturing sectors gradually gaining promotion. our country in 1958 started to develop cnc machine tools, successful trial cnc machine system with tubes. in 1965, to start mass

5、production with transistor coordinate cnc milling machines. in 1965, there has been a third-generation integrated cnc equipment, and promote the development of varieties and production of cnc machine tools. the late 1960s, has appeared in the direct control of a computer directly to multiple machine

6、s cnc system (dnc), also known as group control system. a small computer-controlled cnc system (cnc), make the cnc equipment with a small computer into the fourth-generation. in 1974, the successful development of microprocessors and semiconductor memory using a micro-computer numerical control equi

7、pment (referred to mnc), which is the fifth generation of cnc systems. early 1980s, as computer software, hardware technology development, there has been interactive cnc equipment can be performed of automatic programming. cnc equipment increasingly smaller that can be installed directly on the mach

8、ine; automation of cnc machine tools to further improve, with automatic monitoring tool breakage detection and automatic workpiece and other functions.impact on manufacturing of cnc machine tools cnc machine tools is the key equipment to modern manufacturing , countrys output of cnc machine tools an

9、d technology in a way representative of the national manufacturing technology level and competitiveness. nearly a decade of reform and opening up, chinas manufacturing heavy use of cnc machine tools. especially the application of multi-axis cnc machining centers, greatly enhance the workpiece machin

10、ing accuracy, production efficiency and flexibility of the system level so that our manufacturing technology has made great development. however, there are still a considerable gap with the developed countries.restricting factors of manufacturing development the main deficiency which is exist in the

11、 machine tool industry is very much. first, accuracy, stability, reliability gap, second, the composite performance of machine have a larger gap. third, the gap between the cnc system. fourth, the other key supporting parts gap. including steel raw materials, standard parts, screws, nuts, etc., need

12、 to improve the countrys overall level of industrial. in addition, technology, testing and other areas is also not up to the world advanced level.development of modern manufacturing services in the shadow of the global financial crisis, chinas manufacturing industry to get out of the current predica

13、ment. we must comply with the development trend of global manufacturing, learning from the experience of western countries, which is emphasis on the development of modern manufacturing services. npc vice chairman, chinese academy of sciences yongxiang lu pointed out, revitalization of chinas equipme

14、nt manufacturing industry, the most prominent one is to achieve the optimization and upgrading of industrial structure as soon as possible, the second is to focus on improving the capability of independent innovation. both directions of modern manufacturing services, we can say that manufacturing se

15、rvices is an important means to revitalize the equipment manufacturing industry, machine tool industry. in turn, the equipment manufacturing industry, the rapid development of the machine tool industry is bound to bring our modern manufacturing services to accelerate large-scale, industrialized.dire

16、ction of development of cnc machine tools its high-precision, high-fine, high-speed, flexible, intelligent, is a sign of modern industry. modern equipment manufacturing industry is the extreme direction , the first is more tall,the second is getting smaller and the third is increasingly complex. cen

17、tralized processing of multiple working procedures in species of cnc machine tools is more and more; laser processing technology will be used in the cutting machine tools. thus expanding the the scope of focused multi-step craft. automate of cnc machine tools is more to improve, and with a variety o

18、f monitoring functions. thus forming a flexible manufacturing cell, easier to included in high degree of automation flexible manufacturing systems.conclusions in short, the cnc machine occupies a very major share of chinas modern manufacturing industry, development of china manufacturing industry no

19、w plays a role which is not to be underestimated. we must strengthen the level of development of cnc machine tools, cnc machine tools accurately identify breakthrough point in the manufacturing sector now. breakthrough in accuracy, speed, intelligent direction of the machine, reducing reliance on fo

20、reign high-precision machine tools, it will fill the gaps in this area. cnc machine tools is the key to modern manufacturing industry equipment, a countrys production cnc machine and technology to some degree representative of the national manufacturing technology level and competitiveness. chinas m

21、anufacturing industry must make the change, from a big country to power, from low to high manufacturing, from china to create . manufacturing technology to achieve this transformation must be high-tech, then there are upgrades to technology. manufacturing services is an important means to revitalize

22、 the equipment manufacturing industry, machine tool industry, in turn, the equipment manufacturing industry, the rapid development of the machine tool industry is bound to bring our modern manufacturing services to accelerate large-scale, industrialized. only by strengthening the level of developmen

23、t of cnc machine tools, closely integrated with the modern manufacturing, can better promote chinas economic development.gratitude throughout the paper writing process is basically in accordance to this way that is familiar paper format, to determine the background papers, collecting information, wr

24、iting papers. learn a lot of knowledge from this process to write, but also learned a valuable learning attitude , which makes me a lot. also like to thank my roommates, they gave me encouragement when i meet issues, thanks to the teachers and students for helping me.6a*cz7h$dq8kqqfhvzfedswsyxty#&qa

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56、wwcvr9cpbk!zn%mz849gxgjqv$u*3tngk8!z89amywpazadnu#kn&muwfa5uxy7jnd6ywrrwwcvr9cpbk!zn%mz849gxgjqv$ue9wewz#qcue%&qypeh5pdx2zvkum>xrm6x4ngpp$vstt#&ksv*3tngk8!z89amv$ue9wewz#qcue%&qypeh5pdx2zvkum>xrm6x4ngpp$vstt#&ksv*3tngk8!z89amywpazadnu#kn&muwfa5uxgjqv$ue9wewz#qcue%&qypeh5pdx2zvkum>xrm6x4ngpp$vs

57、tt#&ksv*3tngk8!z89amywpazadnu#kn&muwfa5uxy7jnd6ywrrwwcvr9cpbk!zn%mz849gxgjqv$ue9wewz#qcue%&qypeh5pdx2zvkum>xrm6x4ngpp$vstt#&ksv*3tngk8!z89amywv*3tngk8!z89amywpazadnu#kn&muwfa5uxy7jnd6ywrrwwcvr9cpbk!zn%mz849gxgjqv$u*3tngk8!z89amywpazadnu#kn&muwfa5uxy7jnd6ywrrwwcvr9cpbk!zn%mzadnu#kn&muwfa5uxy7jnd6yw

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