"We are not far from the goal of marketization of automatic transmissions for automobiles. It is basically no problem in three to five years." On June 11, Xia Dejiang, secretary general of the Gear Processing Committee of the China Automotive Engineering Society, told reporters.
He said that in recent years, China's gear products have been upgraded from low-end to high-end, and after-sales service has also been converted to OEMs. "We have become a veritable gear manufacturing country."
"But we still have a big gap from the gear manufacturing powerhouse." Xia Dejiang reminded. At the 16th Annual Academic Meeting of the Gear Processing Committee of the China Society of Automotive Engineers held on the same day, the theme of “making fine and strong high-end gears and promoting the marketization of automatic transmissions†also seemed to be profound.
Accelerating industrialization
"If the engine is the heart of the car, then the automatic gearbox is the brain of the car. It is a combination of interdisciplinary, interdisciplinary, and mechatronics. The technical difficulty is very large." Xia Dejiang told reporters, "but China is now market-oriented." Not far away."
Xia Dejiang listed several reasons for the reporter: "First of all, there is a strong demand for automatic transmission in the market. Secondly, the industry began to grasp the industrialization of automatic transmissions during the '11th Five-Year Plan period, and the relevant standards It has also been under development. Not to mention the products developed by some enterprises have entered the small-scale production and are in the experimental stage. It can be said that the industrialization of automatic transmissions has begun to make substantial progress; in addition, the industry has been actively promoting the automatic transmission of automobiles. The box assembly innovation alliance has also made great progress."
At the annual meeting of the Gear Processing Committee held on the same day, Li Shengqi, deputy secretary-general of the Gear Processing Committee, revealed that the Ministry of Science and Technology will hold a symposium recently, intending to officially include the Automated Transmission Assembly Innovation Alliance in the second batch of alliance start-up projects.
It is understood that the Gear Association has already completed the research topic of the status quo and development of China's automotive transmission industry with the China Automobile Association as early as 2004. From 2004 to 2008, the Dental Association organized the industry's automatic transmission assembly to innovate independently. After five years of organization and development, it has obtained a number of AMT, CVT, 6~8AT, DCT research and industrialization core technologies and independent intellectual property rights. And the original invented live tooth CVT.
“With the automatic gearbox as the representative, the strength of China's gear industry has been continuously enhanced in recent years, and the production capacity, equipment level, product quality and service level have been greatly improved.†Xia Dejiang said, but there is still a lot of work to achieve the gear power. To do.
Four major problems
At the annual meeting, Xia Dejiang opened the door and analyzed the gaps in the current industry.
First of all, China's gear industry is not competitive, its technological innovation capability is weak, and its design platform is backward. "In particular, key core technologies such as automatic transmissions, automotive electronics, high-precision high-strength gears, high-strength bearings and airtight parts are still not fully in control." Xia Dejiang listed one by one: the automatic transmission design and standard research did not follow up in time. Foreign-funded transmission design companies are rushing to China. Most of the key technologies and components are dependent on the introduction. As a result, the standard lags behind the industrialization of products. The gap between independent innovation is large. The product design is copied and copied. The original innovation and invention patents lag far behind the developed countries.
Secondly, gear processing enterprises are small and scattered, with low degree of specialization and uneven development. There is a big difference in the level, brand and quality of products between enterprises. In particular, the reliability of the vehicle gear is poor, the gear noise is large, the leakage is serious, the life is low, and the counterfeit and shoddy products have a great impact on the market. "There have been reports in the media that there were more than 6,000 complaints from auto users last year, 25% of which were vehicle gears. This issue needs to be brought to the attention of everyone." Xia Dejiang stressed.
Secondly, the gear manufacturing technology is highly differentiated, and the same equipment of the enterprise does not meet the same precision requirements, and the process capability is unstable. "This is mainly reflected in the poor precision stability of domestically produced equipment. The manufacturing quality of the clamps and cutting tools cannot meet the needs of special users. High-end gear materials, high-, large, fine, rare equipment and complex gears of gears still need to be imported. â€
Finally, modern management and technical talent development also need to focus on. "Enterprise talents can't stay, the liquidity is very big, and there are very few professional talents." Xia Dejiang told reporters, "Can you basically realize the gear science and technology power in the '12th Five-Year Plan'? A breakthrough was made in the short term."
High-end market to be strong
"The Automobile Industry Adjustment and Revitalization Plan" proposes to upgrade the key technologies of domestic auto parts to the international advanced level within three years. The gear industry must timely adjust and upgrade the industrial structure, product structure, market structure and technical structure. Dejiang said.
He suggested that manufacturing companies cannot bloom everywhere, overcome small and scattered disorderly competition, promote professionalization and large-scale production, and at the same time improve the level of supporting chains and achieve cluster development.
"To cope with market changes, increase technological transformation and investment in science and technology, establish high-end technology research and development centers, and do fine and high-end gears." Xia Dejiang told reporters that China should promote the structural adjustment and industrial upgrading of the transmission assembly industry, so that a single The market pattern dominated by manual transmissions has changed to a market pattern of approximately 50% for manual and automatic.
"We must adhere to high-start independent innovation and improve the equipment level of the gear industry." Xia Dejiang suggested, "It is necessary to consider tooling quick change and online measurement, and realize the automatic loading and unloading device of the processing unit to lay a solid foundation for production automation."
"At present, the international automobile gear manufacturing technology is in the process of upgrading. The basic development goal is integrated manufacturing and green manufacturing. The main development trend is high efficiency and high speed. The typical representative is cold precision forging and high speed hobbing." China Automotive Engineering Institute equipment Minister Chen Changnian said, "In which, the utilization rate of materials for cold precision forging has reached more than 90%, and a cold forging machine can replace hundreds of cutting equipment. The domestic gear factory has formed a large-scale production, enterprises should Change the concept, from cutting to cold finishing," he suggested.
"Now the gear materials commonly used in China have been in use for 60 years. Everyone is only trying to improve its processability and heat treatment deformability. In fact, to improve the quality of gears and gearboxes, we must first start with materials." At the meeting, Chen Yong, chief engineer of Zhejiang Geely Automobile Research Institute Co., Ltd. stressed that “in order to achieve high speed, we must first improve the materials and improve the quality of the materials.â€
In this regard, Xia Dejiang also believes that the key to gear quality lies in the raw material gear steel. “The tooth association has formulated the procurement standard for gear steel, which has greatly improved the quality of gear steel. However, the technical level and quality stability of domestic products are still far from the foreign countries. Foreign countries have been continuously researching and developing new materials. We must keep abreast of and keep up to date with the latest international technology, while constantly improving the stability of quality."
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