英文文献Numerical control laser processing technology and application Pick to: as the main symbol of science and Technology development in the 20th century and the modern information society one of the pillars of optoelectronic Technology, Laser Technology, Laser Technology) and the development of Laser industry attaches great importance to by the advanced countries in the world. Numerical control and integrated the Laser and the optical system of the computer numerical control technology, advanced and high precision and automation of the workpiece positioning, the combination of formation, development and production of machining center has become a Laser machining, Laser Processing) is an important trend of development.Key words: CNC; Laser machining, Laser Processing); Level; applicationBefore: laser is regarded as one of the most important scientific discoveries of the twentieth century, as soon as it was caused the great attention of materials scientists. In November 1971, gm pioneered the use of a 250 w CO2 laser to improve wear resistance materials using laser radiation test and research, and in 1974 successfully completed automobile redirector shellsurface (malleable iron material) laser quenching process, the wear-resisting performance of the hardened parts up to 10 times higher than that of untreated before. This is the first time laser surface modification technology of industrial application. Over the years, the nations of the world into a large amount of money and manpower to laser, laser processing equipment and laser processing and the study of material science, laser processing has been rapid development, and have gained great economic and social benefits. Now in China, the laser technology has been in industry, agriculture, medicine, war industry and get widerin people's modern life Widely used, and gradually realize industrialization of laser technology, countries will it as a research one of the key projects of the ninth five-year plan. Overview, Laser Technology, Laser Technology)Laser processing technology is the use of the characteristics of the interaction between laser and material on the material (including metal and nonmetal) for cutting, welding, surface treatment, punch and a processing technology of micro processing, etc. Laser processing technology is involved in optical, mechanical, electrical, materials and testing different subjects, such as, a comprehensive technology, its research scope in general can be divided into:1. The laser processing system. Including laser, light system, machine tools, control system and testing system.2. Laser processing technology. Including cutting (laser beam cutting), Welding, laser Welding), surface treatment, punching, marking, marking, trimming, etc. Various kinds of processing technology.Has the mature processing technology include: laser rapid prototyping technology, laser welding, laser drilling, laser cutting, laser marking, laser to weight balance technology, laser etching, laser trimming technology, storage technology, laser marking, laser cleaning, laser heat treatment and surface treatment technology.Second, the application of laser processing technologyCO2 laser laser processing applications, the most widely in cutting and welding, accounted for 70% and 20% respectively, surface treatment is less than 10%. The YAG laser application in welding, mark (50%) and cutting (15%). CO2 laser in the United States and Europe accounted for 70-80%. In laser processing is given priority to with cutting accounted for 10%, of which more than 98% of the CO2 laser, power within the scope of the 1.5 kW ~ 2 kW, and given priority to with heat treatment accounted for about 15%, mostly for laser processingof automobile engine cylinder jacket. The economic and social benefits of this technology is very high, it has a great market prospect.In the auto industry, give full play to its advanced laser processing technology, fast and flexible processing characteristics. Such as in car prototype and small batch production extensive use of 3 d laser cutting machine, not only save the sample and tooling equipment, also greatly shorten the production preparation cycle; Laser beam on the surface of high hardness material and complex and bending spile, speed and does not produce damage; Laser welding in automobile industry has become a standard process, Japan's Toyota has laser welding used in automobile body panel, different thickness and different surface coating metal plates welded together, and then to stamping. Welding and cutting laser heat treatment abroad, though less common, but are still widely used in the automotive industry, such as cylinder liner, crankshaft, piston ring, commutator, gear and other parts of heat treatment. In the industrial developed country, laser processing technology and computer numerical control technology and flexible manufacturing technology, the combination of derived laser rapid prototyping technology. The technology not only canquickly manufacturing model, but also can directly by the molten metal powder and produce metal mould.In the 80 s, YAG laser in welding, cutting, punching and tag has played a more and more big function. Generally think of YAG laser cutting can get a good cutting quality and high cutting precision, but is restricted in the cutting speed. With the improvement of YAG laser output power and beam quality were breakthrough. YAG laser level has started to squeeze into kw CO2 laser cutting market. YAG laser is especially suitable for welding does not allow the thermal deformation and micro devices of welding pollution, such as lithium battery, heart pacemakers, sealed relay, etc. YAG laser punch it has developed into the largest laser processing applications.At present, foreign laser drilling is mainly used in aerospace, automobile manufacturing, electronic instrument, chemical industry, etc. The rapid development of laser drilling, mainly reflected in the punching with YAG laser average output power has been five years ago from 400 w to 800 w to 1000 w. Peak power of holing up to 30 ~ 50 kw, punch with narrow pulse width, repetition frequency is more and more high, the improvement of laser output parameters, to a large extent to improve the quality of drilling and improve drilling speed, alsoenlarged the application range of the punch. The application of laser drilling at present more mature is in the production of synthetic diamond and natural diamond die and watch jewel bearing production. YAG laser repetition frequency has amounted to 2000 times per second, diode array pumped Nd: YAG laser in the mean time to repair has increased from the original hundreds of hours to 1 to 20000 hours.With the further study of the interaction between laser and material, laser processing technology will be widely used in flexible manufacturing system. Realization of laser machining flexible systematic mainly refers to the laser head can be flexible to guide the laser beam to parts for processing position. From the complexity of the laser machine can processing parts, and points in a two-dimensional space and three-dimensional laser processing, high power laser 3 d processing is the development direction of the future direction of the laser processing, in order to achieve the flexibility of laser processing, 3 d laser optical system must be adopted. High-powerthree-dimensional YAG laser processing system usually adopt robots (or machine hand) with optical fiber transmission of the beam, by holding the laser robot to complete all kinds of sports, the laser through the optical fiber transmission to the laser head,reach the surface of the workpiece, the processing system, the beam transmission and focusing characteristics is not affected by processing position.Three, is the focus of the laser processing technology research and development can be summarized as:1, a new generation of industrial laser research, is currently in technical update period, its mark is the development and application of PuQuan diode pump solid state laser.2, fine processing, laser micro machining in the laser processing application statistics accounted for only 6% in 1996, and doubled up to 12% in 1997, has increased to 19% in 1998;3, intelligent machining system, system integration is not only the process itself, but with a real-time detection and feedback processing, with the establishment of the expert system, intelligent processing system has become the inevitable development trend.Laser technology in our country after more than 30 years of development, has made thousands of scientific and technological achievements, many have been used to the production practice, laser processing equipment production is growing at 20% per year on average, for the technical transformation of traditional industries, improve product qualityto solve many problems, such as chemical fiber laser hair technology is pushing, baosteel, benxi steel and other large steel mills will change our country automobile covering parts of steel completely dependent on imports, laser marking machine and laser welding machine quality, function, price is in line with the demand of the market at present, the market share of more than 90%.Four, the main problems:1, poor ability of scientific research achievements into products, the market prospect of achievements have been many stay in the laboratory prototype stage;2, the core component of laser processing system of laser small variety, backward technology, poor reliability. Abroad not only diode pumped solid-state laser has been used in the production process, and a diode laser is also used, and the diode pumped solid-state laser is still in its beginning stage of research and development.3, less study on processing technology, especially the study of fine machining technology is more weak, the study of ultraviolet wave laser processing are rare.4, laser processing equipment reliability, safety, maintainability, compatibility is poorer, difficult to meet the needs of industrial production.Conclusion: laser has good monochromaticity, high energy density, good space control and time control, and a series of advantages, it has been widely used in materials processing and other fields. Laser processing of industries including automotive, aerospace, electronics, chemical industry, packaging, medical equipment, etc. Combined with computer numerical control technology, laser processing technology has become the key technology of industrial production automation, has can't be matched by ordinary processing technology advantages. Such as laser machining for non-contact, high speed, no noise, high precision machining of various complex shape can be objective, and not usually in the sense of "tool" wear and tear, do not need to replace the "head". Predictably, with the development of laser technology and perfect, will play a huge role in economic construction and national defense construction. By the words we can find that laser processing has good compatibility with flexible manufacturing system, combine the two laser flexible manufacturing system, under the condition of good cooperatewith each other will certainly receive special effect and achieved good returns.reference[1] xiao-chun zhu Editor, the numerical control technology, mechanical industry publishing house; 2001[2] blue letter written by major such as, laser technology, science press. 2005[3] SiTuZhong editor, "mechanical engineering English", wuhan university of science and technology publishing house; 2001.7 [4] national engineering research center of laser machining, departments: the ministry of education[5] wash Yang Chen Hui-shan li, such as laser remanufacturing technology and its industrial application, the tianjin industrial university institute of laser technology[6] mischa, special processing methods and the content of the trend, Beijing university of aeronautics and astronautics engineering training center of advanced manufacturing中文翻译数控激光加工的技术水平以及应用摘要：作为 20 世纪科学技术发展的主要标志和现代信息社会光电子技术的支柱之一，激光技术(Laser Technology)和激光产业的发展受到世界先进国家的高度重视。