基于solidworks机床夹具设计外文翻译Word文档格式.docx

1、Numerical control high speed cutting technology （High Speed Machining, HSM, or High Speed Cutting, HSC）, is one of the advanced manufacturing technology to improve the machining efficiency and quality, the study of related technology has become an important research direction of advanced manufacturi

2、ng technology at home and abroad. China is a big manufacturing country, in the world of industry transfer to accept the front instead of back-end of the transfer, to master the core technology of advanced manufacturing, or in a new round of international industrial structure adjustment, our country

3、manufacturing industry will further behind. Imminent research on the theory and application of advanced technology.1, high-speed CNC machining meaningHigh speed cutting theory put forward by the German physicist Carl.J.Salomon in the last century and early thirtys. He concluded by a lot of experimen

4、ts: in the normal range of cutting speed, cutting speed if the increase, will cause the cutting temperature rise, exacerbating the wear of cutting tool; however, when the cutting speed is increased to a certain value, as long as more than the inflection point, with the increase of the cutting speed,

5、 cutting temperature can not rise, but will decline, so as long as the cutting speed is high enough, it can be solved very well in high cutting temperature caused by tool wear is not conducive to the cutting problem, obtained good processing efficiency.With the development of manufacturing industry,

6、 this theory is gradually paid more attention to, and attracted a lot of attention, on the basis of this theory has gradually formed the field of high-speed cutting technology of NC, relatively early research on NC High-speed Machining Technology in developed countries, through the theoretical basis

7、 of the research, basic research and applied research and development application, at present applications have entered the substantive stage in some areas.The high-speed cutting processing category, generally have the following several kinds of classification methods, one is to see that cutting spe

8、ed, cutting speed over conventional cutting speed is 5-10 times of high speed cutting. Also has the scholar to spindle speed as the definition of high-speed processing standards, that the spindle speed is higher than that of 8000r/min for high speed machining. And from the machine tool spindle desig

9、n point of view, with the product of DN diameter of spindle and spindle speed, if the value of DN to （52000） * 105mm.r/min, is considered to be of high speed machining. In practice, different processing methods, different materials, high speed cutting speed corresponding to different. Is generally b

10、elieved that the turning speed of （7007000） m/min, milling speed reaches m/min （3006000）, that is in the high-speed cutting.In addition, from the practical considerations, high-speed machining concept not only contains the high speed cutting process, integration and optimization also contains the pr

11、ocess of cutting, is a can obtain good economic benefits and high speed, is the unity of technology and benefit.High-speed cutting technology is in the machine tool structure and materials, machine tool design, manufacturing technology, high-speed spindle system, high performance and fast feeding sy

12、stem, a high performance CNC system, tool holder system, high performance tool material and tool design and manufacturing technology, high efficiency and high precision measurement and testing technology, the mechanism of high speed cutting, high speed cutting process and other related hardware and

13、software technology are fully integrated into the development foundation. Therefore, high speed cutting technology is a complex system engineering, is a with the related technology development and the development of the concept of.2, the superiority of high-speed CNC machiningDue to the large amplit

14、ude of the increase of the cutting speed, high speed machining technology not only improves the cutting productivity, and compared with the conventional cutting also has some obvious advantages: first, small cutting force: in high speed milling, cutting adopts the form of small quantities, high cutt

15、ing speed, the cutting force is reduced by 30% compared to the conventional cutting, especially the radial cutting force greatly spindle bearing, tool, workpiece is reduced. Both to reduce tool wear, and effective control of the vibration machining system, improve the machining accuracy. Second, the

16、 material removal rate is high: the use of high speed cutting, cutting speed and feed rate are improved greatly, the same time the material removal rate is improved greatly. Thus greatly improve the processing efficiency. Third, thermal deformation small: in the high-speed cutting, cutting heat, mos

17、t of the time to the work piece by the outflow of high-speed chip away, so the heating time of the machined surface is short, not because of the temperature rise leads to thermal deformation, is helpful to improve the surface accuracy, physical and mechanical properties of the machined surface proce

18、ssing method is better than the common. Fourth, high precision machining: high speed cutting usually feed is relatively small, so that the machined surface roughness is greatly reduced, at the same time as the cutting force is smaller than the conventional vibration cutting, machining system is redu

19、ced, the machining process more smoothly, so that good quality, can realize high accuracy, low degree of rough machining. Fifth, the green environmental protection: when high speed cutting, workpiece machining time is shortened, the use of energy and equipment rate, high processing efficiency, low p

20、rocessing energy consumption, at the same time, due to the high speed cutting can be achieved even without dry cutting, reduce the cutting fluid, reduce pollution and consumption.Research and application of numerical control high speed cutting technology, 3In view of the above characteristics of hig

21、h speed machining, the technology has great application potential in the field of traditional processing weak. First of all, the workpiece for thin-wall parts and slender, uses the high-speed cutting, the cutting force is significantly reduced, the heat is chipping away, can be very good for using t

22、he traditional method of the deformation problem caused due to the influence of cutting force and cutting heat, greatly improving the processing quality. Secondly, because of the cutting resistance is small, to reduce tool wear, materials of high manganese steel, hardened steel, austenitic stainless

23、 steel, composite materials, wear-resistant cast iron is difficult to be processed by traditional methods, can be studied using numerical control high speed cutting technology to process. In addition, in the automotive, aerospace, mold, manufacturing field, some integral components require relativel

24、y large material removal rate, the feed speed CNC high speed cutting with the cutting speed increase and the corresponding increase in unit time, so that the material removal rate is greatly improved, thus in the mold manufacturing, automobile manufacturing, aerospace manufacturing application of nu

25、merical control high speed cutting technology, will produce the enormous economic benefits. Fourth, because of the high-speed cutting, machining process is stable, the vibration is small, compared with the conventional cutting, high speed cutting can significantly improve the precision of 12, can be

26、 cancelled completely finishing, and subsequent, adopt numerical control high speed cutting technology, can achieve and rough, finishing on the overall structure of complex parts in a machine, reduces the likelihood of locating error transfer process, which is also conducive to improve the machining

27、 accuracy. Therefore, high speed cutting technology has a wide application prospect in precision manufacturing. Aluminium mould such as a business process, the mold cavity length is 1500mm, the required size error of 0.05mm, surface roughness Ra0.8 m, manufacturing process the original: rough planin

28、g - semi finish planing - finishing - Manual scraping - manual polishing, manufacturing cycle is 60 hours. Using high speed milling, after semi-finish machining and finish machining, the processing cycle is only 6 hours, not only improve efficiency, but also greatly improve the quality of mold.4, re

29、search on Key Technologies of high-speed CNC machiningNC High-speed machining is a complex systems engineering, involves cutting mechanism, cutting machine, cutter, cutting process monitoring and processing technology and other related hardware and software technology, implementation and development

30、 of numerical control high speed cutting technology, rely on this system of various elements, the key technology to realize high-speed CNC cutting technology cannot do without, specifically in the following aspects:1） the mechanism of high speed cutting: the various materials in high speed machining

31、 conditions, the chip formation mechanism, variation of cutting force, cutting heat, tool wear patterns and effects on the surface quality, the basic theory above experiments and research, will be conducive to promoting the high-speed cutting process for determining and cutting the amount of choice,

32、 and provide a theoretical basis for the processing of specific parts and material formulation, which belongs to the technical principle. At present, to determine the process specification of high speed cutting and cutting ferrous metals and difficult to machine materials, is one of the difficulties in the production of high-speed cutting, and is also the focus of research in the field of high speed machining.2） technology of high speed cutting machine tool module: high-speed cutting machine needs high-speed spindle system, feeding system and high-speed CNC control system. Able to work