In order to deepen the understanding of professional knowledge, expand knowledge, recognize the professional development direction and understand the development status of China's machinery industry, in April 2003, under the leadership of Mr. Du, Mr. Gong and Mr. Ma, all the students of our mechanical class conducted a one-week graduation internship in Beijing. During the probation period, we visited Beijing Machine Tool Research Institute and participated in the 8th China International Machine Tool Exhibition (CIMT2003), and gained a lot. [Article-Looking for a model essay, here]
I. Introduction
Machine tool is a symbol of high efficiency and an essential tool for producing all kinds of high-tech products. Since the birth of machine tools, human beings have continuously improved and innovated them to meet the needs of all aspects of society. Especially after human beings endowed machine tools with humanity, the relationship between modern machine tools and people became more and more harmonious.
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The machine tool of the past was a cold guy. When we give it a set of G codes, modern machine tools have a language that can communicate with human beings.
The machine tool used to be a guy with no eyes and no mouth. When we install a man-machine interface on it, modern machine tools can communicate with human beings without obstacles.
The machine tool of the past was an thoughtless guy. When we input CAM, modern machine tools are as smart as robots.
-In the past, the machine tool was a dangerous guy, always invading people's limbs from time to time. When we design according to the people-oriented concept, modern machine tools are more and more convenient to operate and more friendly to human beings.
In the past, machine tools were a guy who destroyed the environment. When we follow the requirements of environmental protection, modern machine tools become more and more harmonious with the environment.
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-In the past, the machine tool was a lonely guy who didn't want to communicate with his surroundings. When we connect it with other systems and even the Internet, modern machine tools are like a flexible personal computer.
Two. Overview of CIMT2003
China International Machine Tool Exhibition, sponsored by cmtba and assisted by China International Exhibition Center Group Co., Ltd., is one of the four world-famous machine tool exhibitions recognized by the international machinery manufacturing industry. The 8th China International Machine Tool Exhibition was held in China International Exhibition Center on April 22nd, 2003. This is the largest international professional exhibition held in China after China's entry into WTO. This exhibition has had a great influence on the world.
China's huge market potential has brought infinite business opportunities for this exhibition. Driven by the policy of expanding domestic demand, investment in fixed assets has increased, investment in textile, machinery, metallurgy and other industries has increased rapidly, and private investment has increased. Foreign businessmen are also optimistic about China, which has become a hot spot for their investment. Market funds are abundant, there are many kinds of projects, and the demand for equipment is large. The rapid economic growth makes the machine tool industry market grow continuously and rapidly. The consumption of metalworking machine tools was $20147 billion, which increased to more than $5.5 billion in 2002, making it the first machine tool consumer and the first machine tool importer in the world. It is estimated that by 2005, the consumption of machine tools in China will exceed 7 billion US dollars, and the import of machine tools will exceed 3.5 billion US dollars.
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There are many exhibitors in this exhibition, which has obvious international authority. There are delegations from 26 major machine tool manufacturing countries and regions, including the United States, German, Japanese, Swiss, Italian, Korean, Chinese mainland and Taiwan Province Province. More than 1200 exhibitors set a new record for this exhibition. There are more than 500 overseas exhibitors, accounting for more than 42%. Almost all the famous machine tool factories in the world are gathered in Beijing. Representative manufacturers include German Demaggie Company, Siemens Company, American Harding Company, Cincinnati Company, Gleason Company, Haas Company, Swiss Archie Xia Mier Company, Le Sauer Company, Dixie Company, Japanese Madzak Company, Moriseiki Seiki Company, Daewoo Company, Fanuc Company, Korean Daewoo Company, Spanish Danobat Company, Italian Salvagni Company, and Swedish sandvik Company. China's machine tool manufacturers are also dressed up for battle. Among them, the representative manufacturers are Beijing, Shenyang, Shanghai, Dalian, Shaanxi, Chongqing Machine Tool Group, Jinan Second Machine Tool Group Co., Ltd., Harbin Measuring Tool Factory, Taiwan Province Taichung Seiki, etc. The Swiss ambassador to China said in his congratulatory letter to this exhibition that Swiss machine tool manufacturers have shown great interest and enthusiasm since the first exhibition. This exhibition has gathered the most influential machine tool manufacturers all over the country, and this exhibition will certainly live up to expectations. In this exhibition, machine tool buyers from all over the world, domestic machinery, military industry, railway and other important industrial departments, major groups such as automobiles and aviation, major cities such as Beijing, Shanghai, Shenyang and Chongqing all organized economic and trade delegations and visiting delegations, and the vast number of machine tool industry enterprises, import and export companies, teachers and students of colleges and universities also went to observe, reflecting that CIMT is increasingly attractive to high-quality audiences and powerful economic and trade delegations.
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Three. Brief introduction of CIMT2003 exhibits
CIMT2003 is the latest grand event in the contemporary era. More than 0/000 sets of high-quality products and new products are gathered, and the level of exhibits is the highest ever. It highlights the new level of the development of contemporary manufacturing technology. Exhibits reflect the general trend of "high speed, compounding, precision, intelligence and environmental protection" and become the epitome of contemporary machine tool manufacturing technology and equipment level.
The total exhibition area of this exhibition is 72,000 ㎡, which once again broke the belly of the national exhibition. Not only is the scale unprecedented, but the level of exhibits also exceeds previous ones. There are 39 five-axis machining centers (domestic 18, foreign 2 1), and high-speed and high-precision compound machining machines are exhibited in batches, and the application of new technologies is increasing. Among them, a number of new products and fine products were exhibited for the first time. For example, the first high-speed machining center driven by linear motor (Booth No. 3-003) Spindle speed 15000r/min, rapid movement 60m/min；; DHSC500 high-speed horizontal machining center of Dalian Machine Tool Group Corporation (boothNo8B-202), spindle speed 18000r/min, rapid movement 60 m/min; BW60HS high-speed horizontal machining center of Shenyang Machine Tool Co., Ltd., spindle speed 12000r/min, rapid movement 60 m/min; Ningjiang machine tool group co., ltd. 8B-303)NJ-5HMC40 five-axis horizontal machining center, with spindle speed of 40000r/min and rapid movement of 60m/min；; The μ 1000/3v and μ 1000/5v high-precision vertical machining centers (8B-40 1) of Beijing Machine Tool Research Institute, the CKG300 sub-ultra-precision CNC lathe and the CNC EDM machine tool driven by GW745L linear motor are all exhibited for the first time.
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For the first time, domestic machine tool factories exhibited five-axis linkage and compound machining machine tools in batches. For example, Jiangsu Multi-edge CNC Machine Tool Co., Ltd. (boothNo. 8B-20 1) exhibited XH7 16/5X-SM five-axis linkage machining center, CXH7525 turning and milling compound machining center and XH2725/5X- 10 gantry mobile five-axis machining center; Shenyang machine tool co., ltd. 3-002) Exhibition of SSCKZ80-5/2000 five-axis turning and milling center, SSCKZ40-5 and CX6 154 turning and milling center; Guilin machine tool co., ltd (boothNo8B-203) exhibited XK7 16-5X five-axis lathe bed milling machine, etc.
Many well-known foreign machine tool manufacturers also exhibited many high-tech new products, some of which were exhibited in China for the first time. For example, DML60HSC high-speed laser milling of German DMG company (booth number 1A- 1), DMS35 ultrasonic vibration high-speed machining center, DMC64V vertical machining center, DMU80FD five-axis turn-milling machining center and DMC60S, which continuously strike the workpiece at the frequency of 20000s- 1. Germany EMAG company (booth number1b-801) VG1kloc-0/0ds vertical reverse milling center, VL3 inverted lathe, VSC250DUO double vertical axis inverted lathe; SCHAUDT MIKROSA BWF hard turning grinder (booth no. 1 b-605)； Germany GROB Company (booth No.
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1B-903)BZ500L horizontal machining center; German SPINNER company (booth no. 10- 120) has turning centers TC65MC, TC32MC, RV-6SP precision machining center and TS66L-SMC 1 double spindle turning center; INTE is from Madzak Yamazaki (boothNo. 8B-003)？ Grex200Ⅲ ST compound turning center in STARRAGHECKERT, Switzerland, HX 15 1 five-axis blade milling machine (Booth No. 4-0 10); UCP800DURO five-axis linkage machining center and HSM400 high-speed machining center of Mikron Company (booth No.4-040); W408B five-axis bar machining center of WILLEMIN Company in Switzerland (boothNo4-0 1 1); K 197 five-axis high-speed milling machine (booth no. 5-023); CHIRON/ Huajia FZ- 15KS five-axis vertical machining center (booth No.4-003); DIXI/ Huajia DHP80 Horizontal Machining Center (Booth No.4-003); MG- 1020-5AX five-axis vertical machining center of Taiwan Province Ou Ma company (boothNo. 8a-103); Italy IMT company (booth 5-39) W24T4 twin-tower profile vertical lathe; CINCINNAT FTV850- 1800 Spindle Mobile Vertical Machining Center (Booth No.2-306); 500- Moore CPW five-axis coordinate grinder (booth No.2-301); Niles form grinder (Booth No. 1 b-702)； CORVUS five-axis tool grinder in Schneeberg, Switzerland (booth No.4-064); Gleason's PHOENIX275G bevel gear grinder (Booth No. 2-202); Vollmer company's QWD760 diamond cutting line etching machine (booth no. 1 b-70 1)； ADDSON company (booth no. 2- 10 1)ADDATA G+ pipe measuring machine; GL-30 robot of India Precision Automation Robot Company (booth No.7-304); 4-040) ROBOFIL240CC high-precision CNC wire cut cutting machine (booth No.4-040) of AGIE-CHAMILLES, Switzerland; MC430L linear drive machining center (boothNo6-20 1) of Japan SODICK company; Japan OKUMA company (booth number 8A-0 10)LU300 CNC turning center; TV-400/W4 vertical dual-position hub lathe (booth no. 6-202); Doosan, Korea (booth No.7-203) V420t CNC double-shaft vertical lathe.
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Fourthly, the problems reflected in CIMT2003.
We know that CNC machine tools have become the mainstream products in China market, and the demand is increasing year by year. In recent years, the numerical control rate of machine tool production output value has increased by 2-3 percentage points every year, and in 2002, the numerical control rate of machine tool production output value has exceeded 30%.
Judging from the products exhibited in CIMT2003, China's CNC machine tools have made remarkable progress in industrialization and product development in recent years, especially in the aspects of high speed, multi-axis, compounding and precision. The products of book-controlled machine tools have gradually gained the trust of users, and their satisfaction has increased year by year. However, in terms of high-speed machine tools, foreign linear motor drive technology has been applied and popularized, while China has only developed exhibits, and the technical gap is obvious. In the aspect of compound machining machine tools, turn-milling compound and turn-milling compound multiplex compound have developed rapidly abroad in recent years. In recent years, China has introduced technology and developed its own products, but it mainly relies on imports.
Domestic CNC lathes can basically meet the market demand, based on domestic. High-performance turning centers, in recent years, through joint ventures and technology introduction, some products can also meet the market demand, but the import volume is still very large, especially Y-axis and C-axis turning centers, double spindle turning centers and high-precision turning centers.
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Among domestic machining centers, vertical machining centers are relatively mature in technology, and their performance level is comparable to that of international machining centers. There are many manufacturers, some of which have certain batches, which have been recognized by domestic users. Moreover, it has certain advantages in cost performance and can meet the market demand. At present, the key is to improve quality and reliability and strengthen pre-sale and after-sale services. There is still a certain gap between horizontal machining center and similar foreign products in accuracy and performance. Foreign products are equipped with temperature compensation function to maintain the stability of machining accuracy, but none of the domestic machine tools have this technology. Foreign products can be manufactured and accepted according to VDI344 1 standards or international standards, but most domestic products do not implement international standards. Five-axis machining center, although various enterprises have developed various new products in recent years, most of the products have not passed the production test and won the approval of users, and only stay in the sample stage. The key to the future lies in commercialization.
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Verb (abbreviation of verb) My opinion: The main task of machine tool industry in the future is to improve the market share of domestic CNC machine tools. First of all, we should speed up the transformation of enterprise system and mechanism, establish a modern enterprise system and improve economic efficiency. Secondly, enterprises should speed up product structure adjustment, increase the proportion of development funds in sales, attract domestic and foreign senior talents, and strengthen the development of new CNC machine tools. It is suggested that the state set up a new product development fund to subsidize the expenses of enterprises from samples to commodities, encourage enterprises to use and evaluate new products for users free of charge, and shorten the process of new products to commodities. The third is to further improve product quality, strengthen pre-sale and after-sales service and shorten delivery time. The fourth is to accelerate the implementation of enterprise information engineering, that is, PLM (product life cycle management) implements information management from marketing, development to manufacturing, and realizes concurrent engineering. Finally, enterprises should speed up the pace of cooperation and joint venture, introduce capital, advanced management and advanced technology and products, and improve the overall strength and competitiveness of the industry.
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