Technical level difference analyses domestic and international high-powered machine tool to use bearing

1. Horn contacts domain of main shaft of ball bearing report

Home has a level: In machining center and respect of main shaft of report of numerical control milling machine, luoyang bearing institute developed oil gas to lubricate model main shaft of machining center report, rated power and 22kW of highest turn up, 24000r/min; Main shaft of report of the permanent magnetism synchronism that Hunan university develops machining center, rated power 35kW, 18000r/min of top rotate speed, radial round jumpy 1.5m, g0.4 of dynamic balancing precision, deploy HSK – A63 knife handle, use oil gas to lubricate with compulsive water-cooling means. Ball bearing of pottery and porcelain of high-power of high speed of development of Shenyang building university highest turn up reachs unit of electric main shaft 30000r/min, power amounts to 20kW; Those who develop development without unit of main shaft of report of complete pottery and porcelain of inner ring type top rotate speed achieves 30000r/min, most high-power achieves 15kW, circumgyrate precision 1m. Grinding respect of the main shaft that use phone, value of Dmn of product of main shaft of Luoyang bearing institute achieves 170 ~ 2 million Mmr/min; Bearing ferrule grinds the main shaft that use phone most high-power is amount to 32kW (S6 ~ 60% ) , top rotate speed is 120000r/min; Path board grinds Gao Tie course to amount to 150kW with electric main shaft (S1 ~ 100% ) , 2000r/min of top rotate speed; Working life general is ubiquitous 1500 ~ 2000h.

Level of international advanced technique: In machining center and respect of main shaft of report of numerical control milling machine, the grease on international is lubricant model machining center uses electric main shaft top rotate speed is 60000r/min, oil gas is lubricant model numerical control mill is highest rotate speed is 140000r/min, and the power of high-power report main shaft can amount to 80kW, rotate speed is 10000r/min, its are the biggest torsion can amount to 380Nm. Grinding respect of the main shaft that use phone, the bearing Dmn value of product of international main shaft is as high as 2.4 million Mmr/min, choose oil gas lubricant means, output power is global than going up generation product increases 50% the left and right sides, its work life also grows 50% generally to control.

Machine tool of national numerical control weighs target of old special technique: Rated power and top rotate speed are ① 50kW, 20000r/min (it is 30kW, 30000r/min and 10kW, 40000r/min twice additionally) . ② has bearing trends to be tightened beforehand adjust a function. 5000h of time of ③ average failure free operation. 1.0m of < of precision of circumgyrate of ④ main shaft. 300Nm of stiffness of ⑤ shafting all. Class of G0.4 of precision of ⑥ dynamic balancing. ⑦ constant power 14. Limits of wave motion of ⑧ rotate speed 0.04% the following. Buy of ⑨ C position of axle controls precision 10. Interface of coder of ⑩ high resolution can support 17 coder most (131072 pulse / R) . 11. Have interface of bus line of two kinds of spots.

2. Liquid (move) static control territory of bearing report main shaft

Home has a level: The liquid that Shanghai achieves limited company of main shaft of accurate machine tool to develop formerly (move) the static main shaft that suppress report, rated power and top rotate speed achieve 34kW, 8500r/min, radial and jumpy 1m. The liquid that firm of Oriental seed profit produces (move) the static main shaft that suppress report, rated power / top rotate speed achieves 17kW, 8000r/min, radial and jumpy 1m, radial stiffness 500Nm. Hunan university is aimed at the circle outside exceeding high speed / camshaft grinder developed liquid of type of the buy inside electromotor (move) the static main shaft that suppress report, rated power and 35kW of highest turn up, 10000r/min, radial circle is jumpy 1m; Still be aimed at grinder of the circle inside high speed at the same time, developed activity of liquid of type of the outfit inside electromotor of 12kW, 30000r/min to press electric main shaft. The limited company of Beijing northing nicety of subordinate of Beijing aerospace university developed set (move) static control main shaft product, rated power and top rotate speed achieve 7.5kW, 48000r/min, circumgyrate precision can achieve 0.5m less than. Inside the circle is ground (move) static control main shaft aspect, home already produced turn up 20000r/min, the main shaft product of 28mm of main shaft diameter. At present domestic liquid (move) static the circumgyrate precision that presses main shaft is the most high-energy achieve 0.1m.

International is advanced level: German HYPOSTATIK company develops outside the round main shaft that obliterate report, top job rotate speed is 7600r/min, power is 50kW, 320Nm of emery wheel radial stiffness; Cam grinds main shaft of concave side grinding, rotate speed 25000/35000r/min, emery wheel radial stiffness is 120/60Nm; Milling is static the main shaft that suppress report, top job rotate speed is 42000r/min, power is 15kW, bearing stiffness is 200/160Nm.

(Be over)

Method for numerical control introduced the latest research and development of CNC floor-type boring and milling machining center

held in the last month of the seventh China debut of the nc machine tool exhibition FV200 type CNC floor-type boring and milling machining center cause the high attention of the industry, the reason mainly concentrated in two aspects, one is its reach the international advanced level of high spindle speed and feed rate, the second is the manufacturer of shandong method because of the background of CNC machinery co., LTD.

method for numerical control the company was founded ten years has been engaged in steel structure of the secondary processing equipment specializing in the production of industry knowledge, its original product category mainly includes three categories, respectively, in the service of tower steel structure, construction steel structure and large plate processing field.In recent years, began to try to expand the company’s products range, in addition to the direct application of steel structure industry, has gradually extended to the wind, nuclear power, the central refrigeration, desalination and other industries.

the introduction of FV200 type CNC floor-type boring and milling machining center used military-industrial complex, nuclear power, wind power, energy, metallurgy, shipbuilding, aerospace, transportation and other machinery manufacturing industry of large complex workpiece rough and finish machining, milling, boring, drilling, tapping dimpling and other functions, in terms of its performance, high, the same industry at home is come.

the ground boring and milling machining center is the method for company and Italian Colgar cooperation development of new products, its technical source for Col pride gar company, from in the process of development to product market has been more than two years.Colgar Italian company was founded in 1945, is one of the machinery factory enjoys a high reputation in the European market, with the technical structure and production of flexible structure, in areas such as large boring machine, large bending machine attainments deep, on a global scale has a larger market share.

is the personage inside course of study thinks, this cooperation will become a method for numerical control companies to adjust product structure, break through the traditional steel structure the beginning of secondary processing equipment scope.According to mutual agreement signed earlier for CNC production by Colgar company’s proprietary technology FV200 type boring and milling machining center, will be named “Fin&Colgar” (Fin) method for trademark trademark together, except Russia in Australia in Asia and Africa public sale, other than the Mediterranean and enjoy the exclusive rights to these areas.

method for numerical control the cooperative production and Colgar company FV200 vigorously develop foreign markets for the company not only adds a powerful Jordan farmar, and shows the direction of adjustment of product structure and determination.
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Pan Jin city produces per year base of machining center of 1000 vertical numerical control to already threw batch to produce

Pan Jinxing China mechanical production limited company depends on abundant technology force, established industrial dimensions to produce per year base of northeast of machining center of machine tool of 1000 vertical numerical control, had thrown batch production at present, fill of this one project the blank of production industry of equipment of Pan Jin city.

The modernization of course of study of Chinese machine tool chooses

Industry of machine tool tool is advanced not only the primary production shift of the carrier of production technology and mechanical equipment industry and cornerstone, what still matter to national economy progress and national defence career at the same time is strategical industry. As Chinese industrialized process accelerate, industry of tool of Chinese machine tool also got great progress, industry of tool of machine tool of preliminary and alive bound held position. One, modern level is insufficientThe the Chinese Academy of Social Sciences concerns the research positive result that level of Chinese industry modernization evaluates to make clear recently, the modern level of industry of tool of Chinese machine tool is equivalent to the 27.65 % of the developed country only. This task research is main from the overall efficiency of industry of machine tool tool, technology degree of advanced sex, internationalization, industry organizes the aspect such as rationalize degree, undertake be evaluatinged integratedly to the modern level of industry of tool of Chinese machine tool. specific target, in respect of efficiency of industry of machine tool tool, chose business income of average per capita to regard the basic opinion that measures manufacturing efficiency as index, in technology of machine tool tool advanced sex respect, chose R&d to throw intensity and crop numerical control to change rate regard basic evaluation as index; In field of level of internationalization of industry of machine tool tool, the proportion that chose exit to hold total output regards basic evaluation as index; Rationalize aspect is organized in industry of industry of machine tool tool, the crop that chose single company regards basic evaluation as index. In the meantime, still chose a few auxiliary index to have complement in evaluation. About the referenced value of main index, basically be a basis in recent years average level defines developed country of industry of machine tool tool. Through be opposite each index reference is worth modernization of industry of machine tool tool decide and the analysis of each Chinese index, according to formula of computation of aggregate index of level of modernization of industry of machine tool tool, we can be calculated the aggregate index that gives level of modernization of industry of tool of Chinese machine tool. Specific computation expresses place to show as follows as a result. In the watch we reflect the numerical value of real target, referenced index according to providing, and corresponding weight undertakes direct calculation, reach the index is the modernization of industry of machine tool tool of our country 27.65. Can see from inside the watch, industry of tool of our country machine tool in overall efficiency, technology respect of advanced sex, internationalization is returned with international advanced level exists bigger difference, be equivalent to international respectively the 6.2 % of advanced level, 32.8 % and 21.2 % . Accordingly, how does the main problem that place of industry of tool of prospective China machine tool faces realize this industry namely from industrialized phase to industrial modernization phase span. 2, demand directs + innovatesDemand directs is the guide that implementation of industry of tool of Chinese machine tool spans. The technology of industry of machine tool tool overtakes behavior also has very strong demand to guide tropism pledges, overtake from technology of Japanese machine tool industry experience will look, the competition ability difference of American enterprise and Japanese enterprise is not the difference that comes from the fundamental technology that uses at them, the business that reflected 2 markets however designs the difference of innovation respect in equipment of numerical control machine tool, and the demand structure difference that generation divergent reason is 2 markets, market demand of Japan is lead the main development direction of technology of enterprise general numerical control is mixed neatly to make certainly labor cost is managing, is not the accuracy that improves facility in that way like American enterprise is mixed repeat use sex, make oneself machine tool industry held due position on the world thereby. Additional, demand is oriented still behave in industry of machine tool tool and client interact and learn, actually, this among them accumulate the innovation method option that containing an enterprise to implement specific aim more. With respect to industry of tool of our country machine tool character, capture native land demand, innovate for the foundation with this, appear more objective with reality. Look from international experience, this kind interacts to be behaved not only supply in equipment square with demand square information communicates, and the associated research and development between the industry of machine tool tool that expresses higher now administrative levels and client, in fact, associated research and development has made a trend of activity of innovation of industry of machine tool tool. Germany ever had launched an extensive investigation that the name is Isi Manufacturing Innovation Survey in the light of activity of manufacturing industry innovation 1999, data shows, the machine tool enterprise of 52 % and client begin associated research and development. In light of the element that innovates from industry of machine tool tool, although be in respect of ability of research and development, our country enterprise is put in bigger difference with transnational corporation, but the respect waits to be put in the advantage however in development ability of the understanding degree to demand of native land market, market. Accordingly, our country enterprise chooses to go up in innovation strategy, should adopt it is oriented innovation strategy with demand, should make full use of the resource advantage of this respect, satisfy this locality requirement, increase technical supply capacity ceaselessly in the process that grasps market opportunity, promote the own innovation of industry of machine tool tool capability. In the meantime, those who be worth to emphasize is, innovate independently in promotion ability process while, need handles the relation of good transfer of technology and innovation. Own innovation itself is not meant do not need transfer of technology, should pass however introduce, the most advanced technology on integrated world, implementation innovates. For example, the exploration sex technology that Japan is introducing technical respect to pay attention to new to abroad development very much is introduced patently, need to undertake according to oneself next again research and development, apply in industrial production again finally, this is the key that Japan introduces a technology to gain a success. Additional, in 20 centuries 559 time, once also put forward in development of Japanese machine tool industry ” entrance of a machine, 2 machine are homebred ” catchword of transfer of technology. Actually, undertake innovating on the foundation that Japan introduces a technology in great quantities through be in namely, ceaseless development gives his technology. Additional, industry of tool of our country machine tool is on the key of innovation, still should achieve a breakthrough in the light of industrial core technology. Current, in development of estate of tool of our country machine tool, tool carrier of library of numerical control system, knife and manipulator, numerical control and revolving stage, main shaft is unit (the main shaft that contain report) , ball guide screw deputy with scroll slideway deputy, high speed defends and the crucial function component of the numerical control machine tool such as numerical control cutting tool still counts an import. In fact, the United States and Japan are on development of industry of tool of stimulative machine tool, adopted ” with the law hurried innovates ” , ” with policy hurried innovates ” practice, specific aim ground develops technical innovation, the breakthrough restricts the core technology bottleneck that the industry grows.

Industry of sea day energy always invests start working of project of machine tool of 2 billion yuan of large numerical control

On June 26, traffic of orbit of peaceful wave city a line start working of first phase project, pulled open peaceful wave city to accelerate advance new the heavy curtain that round of major project builds. This year, peaceful wave city shares start working of 14 major projects, a project lays a foundation, involve transition of infrastructure, industry to upgrade, project of the people’s livelihood, total investment amounts to 22 billion yuan. Among them, industry of sea day energy is large reach exceed project of machine tool of large numerical control group of day of You Ningbo sea invests, always invest 2 billion yuan, after predicting to go into operation builds by 2010, produce body year after year machine tool of large numerical control 180 productivity, realize annual produce 3 billion yuan, taxation 240 million yuan, make sea day group becomes the throughout the country the machine tool of large numerical control of influential force produces top-ranking, whole world base; Project of center of configuration of blue sea resource will make the Ning Bo that always invests 500 million yuan be year of service trade income exceed synthesis of 60 billion yuan contemporary service line of business, already introduced Zhejiang products, China at present 5 mine, medium 6 enterprises such as iron goods and materials, bao Gang, Bao Gang, head the 10 Yu Jiada enterprises such as steel, saddle steel are preliminary already reach be stationed in intent, predicted 2 billion yuan to increase service trade income newly 2009. In addition, the project of 2 the people’s livelihood that includes sewage treatment plant inside also will at the same time start working. Guilin machine tool and couplet female trade makes household content shed the market togetherThe development that to comply with Guilin old city plans asks, trade of couplet female of Inc. of Guilin machine tool and city develops limited company to come to an agreement formally a few days ago, machine tool of joint development Guilin casts 150 mus of land inside plant area, both sides signed cooperative agreement on June 26. This one denounce endowment the development project that 300 million multivariate, last a period of time completes 3 years is two companies foundation program of whole of Guilin city town and layout of progress of economy of the region that fold colour plan to ask, pass what two months reach after 7 rounds of palaver. According to the agreement that both sides decides, guilin machine tool casts a factory to carry out ” retreat 2 into 3 ” , enter with plant area land endowment with joint development of couplet female trade builds contemporary household content to spread the market and commercial house, plan to build commercial appearance to be in among them above of 100 thousand square metre. After market building, both sides allocates in proportion and have property right severally. As we have learned, what border with this plot is one large one-stop household decorates building materials market — , couplet female household, this will form a whole with its after project building anew, hopeful becomes Guangxi the biggest, contemporary household content that does not fall behind 20 years sheds the market group, predict every year to be able to generate 20 million yuan revenue, drive the city zone to economy grows and increase social obtain employment.