"At present, the gear industry in our country taking a new step is at a turning point. To promote the building of a powerful country with gear is a major task facing China's gear industry. Driven by innovation and driven by industrial upgrading, it is an inevitable choice for China's gear industry." China Machinery General Zero Shi Zhaoyao, executive deputy secretary-general of the Gear Branch of the Component Industry Association, said at the 2014 National Gear Technology Symposium hosted by him.
This seminar was organized by China Machinery General Parts Industry Association Gear Branch Organization, Beijing University of Technology Machinery Industry Precision Measurement and Control Technology and Instruments Key Laboratory, Jiangyin City Tools Factory and Jiangyin Dorset Precision Tools Co., Ltd., the conference around the "technological innovation R & D Management ", a series of invited reports and technical exchanges were arranged, attracting more than 200 experts, scholars and enterprise technicians from the industry.
It is believed by everyone that the report of this meeting is rich in content and high in technical level. It not only reflects the international technological frontier but also combines with the actual situation of China's gear industry. It has strong pertinence and practicability and plays an important role in promoting the technological progress of the gear industry. In particular, Prof. Wang Liding, Chinese Academy of Sciences, "High-precision harmonic drive steel wheels, flexspline grinding and measuring", Associate Professor Zhang Yueming of Beijing University of Technology, "The Key Technology and Industrialization of RV Robot Reducer" and other reports, Hot spots, cutting-edge technology, enthusiastic response.
Focus on high-end innovation-driven industrial upgrading "gear in the equipment manufacturing industry is an important and indispensable basis for parts in the mechanical basis of the industry scale, a prominent role." China General Machine Components Industry Association Wang Changming, executive vice president At the presentation gear industry situation, affirmed the gear industry in the common parts and components industry's position and role. "Since the 11th Five-Year Plan, the gear industry has witnessed a rapid development. The sales revenue of the entire industry has grown from 68 billion yuan at the beginning of the 11th Five-year Plan to 208 billion yuan now. In the past two years, Parts industry development difficulties, the rapid decline in the development of the case, the gear industry is still maintained a relatively steady pace of development in the first quarter of this year, the gear industry sales of 45 billion yuan, an increase of 8% over the same period the entire general components industry Especially in exports, according to customs statistics. In the first quarter of this year, the export value of gear was 1.36 billion U.S. dollars, up 18% year-on-year, making it a prominent highlight in the export of the whole industry. "
"Great progress has also been made in the design and manufacture of gearboxes, such as wind power gearboxes that have been reintroduced after the initial introduction and digestion, and at present several major industrial gear backbone enterprises in China have mastered the growth gearboxes above 2MW Design and manufacturing technology, South High tooth has been successfully developed 6 MW offshore wind power transmission box; in nuclear power, Zhengzhou Institute of Machinery has successfully developed cooling pump front gear box; in the high-speed rail, Qishuyan Locomotive Research Institute, The successful development of high-speed rail gearboxes over 300 kilometers per hour; the successful development of gearboxes, retarders and other products of large backbone enterprises represented by Fast in heavy-duty vehicle gears has reached the international advanced level; In respect of a group of enterprises represented by Shanghai Automotive Transmission Company, various types of automatic transmission products have been developed. In terms of construction machinery and marine engineering gearboxes, Hangzhou Forward Gearbox Group and other enterprises have developed their own intellectual property rights Series of products. "
However, Wang Changming also pointed out that the gear industry in our country has the same outstanding problems as the entire mechanical basic parts industry, with large but not strong, and high-end and low-end excess high-end issues. Most of the high-end gear products needed by the country's strategic emerging industries rely on imports. Such as high-speed passenger train gearbox all imports; car automatic transmission mainly rely on imports, the first quarter of this year, the automatic transmission of cars with a value of 1.8 billion US dollars, accounting for 52% of China's total imports of gear products; China's high-end Gear processing equipment and measuring instruments are also mostly dependent on imports.
Wang Changlu, general secretary of China Machinery General Component Industry Association Gear Branch, summarized the shortcomings in technology development and innovation of China's gear industry in the conference speech. First, there was a lack of basic research and basic data. Lack of gear fatigue limit stress, microstructure and other related basic research, the lack of new tooth shape research, load spectrum test, the basic research of processing technology, product design and manufacture of a lack of data support, resulting in China's high-end gear Product design and manufacturing capacity was clearly inadequate, high-end products are monopolized by foreign long-term. In addition, the development and application of professional software lags behind, and multidisciplinary integrated design techniques and tools are outdated. Second, the lack of technological innovation and testing services platform. One of the shortcomings of the industry-wide gear common technologies and cutting-edge technology research and development, an important platform for the transformation of scientific and technological achievements and engineering application of innovative platform; two missing for the industry to provide product performance testing and testing services platform, the lack of guidance gear and its transmission design , Manufacturing test improvement and reliability improvement test evaluation service system. Third, China's gear heat treatment process is not high. Carburizing and quenching deformation large; susceptible to quenching prone dedendum; low carburization efficiency, the depth of the layer, although the rare earth catalysis achieved good results, but still has greater limitations; the lack of effective process control methods. Fourth, processing and testing equipment and tools compared with the obvious gap between foreign countries. Cemented carbide tools and the gap between developed countries, efficient hobbing tools, dry cutting tools, high-grade CBN cutting tools and high-grade grinding wheel almost all imports; efficient machine tools , high-grade CNC grinding machine is still basically dependent on imports; large And small gear gauge and in-position rapid measurement machine is still blank. Fifth, the production of low efficiency, poor quality and stability. Although China imports a lot of high-grade gear manufacturing equipment, it has poor quality and stability, low production efficiency and high energy consumption due to the differences in the use of knives and equipment, selection of manufacturing process parameters and production management.
This seminar was organized by China Machinery General Parts Industry Association Gear Branch Organization, Beijing University of Technology Machinery Industry Precision Measurement and Control Technology and Instruments Key Laboratory, Jiangyin City Tools Factory and Jiangyin Dorset Precision Tools Co., Ltd., the conference around the "technological innovation R & D Management ", a series of invited reports and technical exchanges were arranged, attracting more than 200 experts, scholars and enterprise technicians from the industry.
It is believed by everyone that the report of this meeting is rich in content and high in technical level. It not only reflects the international technological frontier but also combines with the actual situation of China's gear industry. It has strong pertinence and practicability and plays an important role in promoting the technological progress of the gear industry. In particular, Prof. Wang Liding, Chinese Academy of Sciences, "High-precision harmonic drive steel wheels, flexspline grinding and measuring", Associate Professor Zhang Yueming of Beijing University of Technology, "The Key Technology and Industrialization of RV Robot Reducer" and other reports, Hot spots, cutting-edge technology, enthusiastic response.
Focus on high-end innovation-driven industrial upgrading "gear in the equipment manufacturing industry is an important and indispensable basis for parts in the mechanical basis of the industry scale, a prominent role." China General Machine Components Industry Association Wang Changming, executive vice president At the presentation gear industry situation, affirmed the gear industry in the common parts and components industry's position and role. "Since the 11th Five-Year Plan, the gear industry has witnessed a rapid development. The sales revenue of the entire industry has grown from 68 billion yuan at the beginning of the 11th Five-year Plan to 208 billion yuan now. In the past two years, Parts industry development difficulties, the rapid decline in the development of the case, the gear industry is still maintained a relatively steady pace of development in the first quarter of this year, the gear industry sales of 45 billion yuan, an increase of 8% over the same period the entire general components industry Especially in exports, according to customs statistics. In the first quarter of this year, the export value of gear was 1.36 billion U.S. dollars, up 18% year-on-year, making it a prominent highlight in the export of the whole industry. "
"Great progress has also been made in the design and manufacture of gearboxes, such as wind power gearboxes that have been reintroduced after the initial introduction and digestion, and at present several major industrial gear backbone enterprises in China have mastered the growth gearboxes above 2MW Design and manufacturing technology, South High tooth has been successfully developed 6 MW offshore wind power transmission box; in nuclear power, Zhengzhou Institute of Machinery has successfully developed cooling pump front gear box; in the high-speed rail, Qishuyan Locomotive Research Institute, The successful development of high-speed rail gearboxes over 300 kilometers per hour; the successful development of gearboxes, retarders and other products of large backbone enterprises represented by Fast in heavy-duty vehicle gears has reached the international advanced level; In respect of a group of enterprises represented by Shanghai Automotive Transmission Company, various types of automatic transmission products have been developed. In terms of construction machinery and marine engineering gearboxes, Hangzhou Forward Gearbox Group and other enterprises have developed their own intellectual property rights Series of products. "
However, Wang Changming also pointed out that the gear industry in our country has the same outstanding problems as the entire mechanical basic parts industry, with large but not strong, and high-end and low-end excess high-end issues. Most of the high-end gear products needed by the country's strategic emerging industries rely on imports. Such as high-speed passenger train gearbox all imports; car automatic transmission mainly rely on imports, the first quarter of this year, the automatic transmission of cars with a value of 1.8 billion US dollars, accounting for 52% of China's total imports of gear products; China's high-end Gear processing equipment and measuring instruments are also mostly dependent on imports.
Wang Changlu, general secretary of China Machinery General Component Industry Association Gear Branch, summarized the shortcomings in technology development and innovation of China's gear industry in the conference speech. First, there was a lack of basic research and basic data. Lack of gear fatigue limit stress, microstructure and other related basic research, the lack of new tooth shape research, load spectrum test, the basic research of processing technology, product design and manufacture of a lack of data support, resulting in China's high-end gear Product design and manufacturing capacity was clearly inadequate, high-end products are monopolized by foreign long-term. In addition, the development and application of professional software lags behind, and multidisciplinary integrated design techniques and tools are outdated. Second, the lack of technological innovation and testing services platform. One of the shortcomings of the industry-wide gear common technologies and cutting-edge technology research and development, an important platform for the transformation of scientific and technological achievements and engineering application of innovative platform; two missing for the industry to provide product performance testing and testing services platform, the lack of guidance gear and its transmission design , Manufacturing test improvement and reliability improvement test evaluation service system. Third, China's gear heat treatment process is not high. Carburizing and quenching deformation large; susceptible to quenching prone dedendum; low carburization efficiency, the depth of the layer, although the rare earth catalysis achieved good results, but still has greater limitations; the lack of effective process control methods. Fourth, processing and testing equipment and tools compared with the obvious gap between foreign countries. Cemented carbide tools and the gap between developed countries, efficient hobbing tools, dry cutting tools, high-grade CBN cutting tools and high-grade grinding wheel almost all imports; efficient machine tools , high-grade CNC grinding machine is still basically dependent on imports; large And small gear gauge and in-position rapid measurement machine is still blank. Fifth, the production of low efficiency, poor quality and stability. Although China imports a lot of high-grade gear manufacturing equipment, it has poor quality and stability, low production efficiency and high energy consumption due to the differences in the use of knives and equipment, selection of manufacturing process parameters and production management.
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