Since the launch of the "Yun 10" to the launch of the large aircraft project, although it has been extended for more than 20 years, it is enough to make the "flying dream" of a generation of civil aviation people no longer out of reach. On May 11, 2008, China Commercial Aircraft Co., Ltd., a project company responsible for the independent development of China's large aircraft, was established in Shanghai. The company's registered capital reached 19 billion yuan. The entire development process will last for more than 10 years and will play a positive role in stimulating the growth of related industries.
As the “working machine†of the equipment manufacturing industry, the machine tool industry is responsible for providing excellent equipment for the manufacture of large passenger aircraft. Zhang Hui, general manager of China Aviation Technology International Industry and Trade Co., Ltd. believes that the aviation industry needs more equipment manufacturing products. This is a national behavior, and enterprises must respond. At the same time, the state must also actively guide.
In order to adapt to the development needs of China's aviation industry, China's aviation industry system has undergone new reforms at the end of 2008, and the former aviation industry group I and the second group were merged into a new China Aviation Industry Corporation, indicating that the country needs to concentrate. Resources and energy to develop the firm will and determination of the high-tech aviation industry represented by large aircraft. According to the relevant budget, from the research and development expenses of the large aircraft in the early stage to the production capacity construction, and finally to the final release of the products, the relevant investment will exceed 200 billion yuan.
Aerospace industry product parts are characterized by high temperature resistance, high strength and difficult processing. At the same time, there are many alloy materials and composite materials, many complicated structural parts and high process requirements. The plates or forgings used for the blanks of beams, frames, ribs and siding of large aircraft are large pieces weighing several hundred kilograms or even tons, which must be processed by heavy-duty, super-heavy machine tools.
After the large aircraft was established, Chinese equipment manufacturers heard the "machine" dance, and carried out various aspects of work around the large aircraft project. The machine tool industry is one of them. It is hoped that in the "big aircraft" project, opportunities will be obtained to improve product quality and improve industrial energy levels.
75%~95% of the blank material needs to be milled and milled, so it needs large-scale, high-speed, precision, multi-axis high-performance CNC floor milling machine and machining center; precision machining center and coordinate boring and milling machining center are needed for engine machining. There is also a need for a large number of high-rigidity, high-efficiency special machine tools and flexible automatic production lines.
In addition to machine tools, the domestic multi-channel modular CNC system is available, which can simultaneously process and operate more than 16 processes such as milling, grinding and drilling. Especially, the one-loading technology greatly improves the machining accuracy of the workpiece.
In addition, the machine tool industry must not only design, manufacture, install machine tools, flexible production lines and machining centers for aircraft manufacturers, but also provide consulting services, equipment packages, engineering contracting and turnkey projects for aircraft manufacturers. Therefore, the large aircraft manufacturing has given rare opportunities for the development of the machine tool industry, and the machine tool industry will take the opportunity to take off.
Demands are focused on modern aircraft to meet the performance requirements of high speed, high maneuverability, high load and long range. A large number of new technologies, new structures and new materials are used, and their parts are becoming more and more large in size and complicated in structure. Lightweight, material diversification and precision manufacturing. For example, typical parts of aircraft fuselage structural members, such as beams, frames, ribs, siding, purlins, and key components of aero-engines, various types of blades and integral leaf discs, have large outlines and different shapes.
Because modern aviation manufacturing is often faced with production tasks of multiple varieties, small batches, and short production cycles, the process system is required to have a high response speed. Typical parts of the aerospace manufacturing industry that require machining are mainly organic structural parts, engine key parts, landing gear parts and airborne product parts. Due to their different structural and performance requirements, the demand for machine tools is also different.
Aircraft fuselage structural parts mainly include beams, frames, ribs, siding and other parts. Most of these parts are made of aluminum alloy or titanium alloy. They are generally large in outline size and are thin-walled multi-cavity integral frame structure, mechanical cutting. The amount of removal is large and the surface quality is high. The processing of such parts requires large and heavy-duty machine tools, and requires a work platform with a load of more than 10 tons and a high-rigidity machine with an effective stroke of more than 15 meters.
The key components of the aircraft engine include compressors, combustion chambers, and turbines. Most of the parts of such products are high-temperature alloys or high-temperature resistant composite materials, which are generally shaped annular structures with poor rigidity, high precision, complex profiles and difficult processing. Large and medium-sized multi-function, high-precision CNC machine tools are required to process such parts. The equipment requires high flexibility, excellent numerical control system, powerful online measurement function, multiple working positions, large tool magazine capacity, such as large-scale precision CNC vertical turning. Center, five-axis linkage machining center and multi-axis CNC gantry milling, in addition to the development of high-performance impeller machining machine for engine impeller.
Aircraft landing gears are generally machined from forged blanks of high strength steel. Forging blanks require 10,000-ton presses, and the processing of blanks requires medium and large CNC floor boring and milling machines, five-axis linkage gantry machining centers and other equipment. There are many types of airborne product parts, complex structures, diverse materials and different performances. Processing such parts requires medium and small high-precision multi-function CNC machine tools and high-speed CNC milling machines, such as high-precision vertical and horizontal machining centers and high-precision machine tools such as turning, milling and grinding composite machining centers.
After the high-end gap China's large aircraft project, the CNC machine tool industry began to actively develop and produce machine tools for large aircraft parts. Huazhong CNC is a domestic enterprise engaged in the research and development and production of CNC systems. The five-axis CNC Milling Machine can process complex machine parts such as aircraft turbines. . Wuzhong and Huazhong CNC, two leading enterprises in the machine tool industry in Hubei Province, are also planning to cooperate in production, learning and research to provide high-quality machine tools for the production of large aircraft.
“The number of parts for large passenger aircraft ranges from 3 million to 5 million.†Liu Jihong, a professor at the Department of Aircraft Manufacturing Engineering at Beijing University of Aeronautics and Astronautics, said in an interview with this reporter that the “big aircraft†project will promote the development of the equipment manufacturing industry. Speed ​​up the development of high-end mechanical equipment.
“The aircraft itself is an equipment, made up of many other equipment.†He said, “In the process of developing the 'big aircraft', a large-scale precision high-end CNC machine tool is needed. For example, the large-scale structural components that make up the wing require more machine tools. Axle linkage and high-speed machining performance. It is understood that the main bearing structure of modern aircraft such as beams, frames, ribs and large siding blanks are all plates or forgings, weighing a few hundred kilograms or even tons, but the blank Many of the materials will be processed, so the processing workload is extremely large, and the use of high-speed CNC machining technology is a trend.
At present, the capacity of China's large-scale precision high-end CNC machine tools needs to be improved. The "Several Opinions of the State Council on Accelerating the Revitalization of the Equipment Manufacturing Industry" listed high-end CNC machine tools as one of 16 major development projects. "High-end machine tools also need the support of basic components, such as sensors, high-speed precision spindles, gears, etc. In this regard, there is a gap between China's related enterprises and foreign countries, there is a lot of room for improvement." Liu Jihong said, the Ministry of Science and Technology "Eleven In the five-tech support plan, many basic components, including the above components, will be listed as the focus of breakthroughs and developments in mechanical manufacturing technology.
In order to adapt to the development of the aviation industry, China's equipment manufacturing industry has achieved some results, such as the development of a beam-moving gantry five-axis machining center for large-scale aircraft parts processing, which can deep-process aircraft wings, turbines and propellers.
It is worth mentioning that the establishment of the 80,000-ton heavy-duty forging hydraulic press initially reflects the pull of the “big aircraft†project on the equipment manufacturing industry. As a key heavy equipment needed to support the large-scale independent research and development of large-scale aircraft in the country, the construction plan of the forging hydraulic press project is not only conducive to the development of “big aircraftâ€, but also promotes the manufacture of large-scale forging equipment and large-sized discs and structural parts in China. .
Urgent need to upgrade The aviation industry has always been the leading industry in the development of machine tools, and also a major consumer of machine tools. The implementation of the large aircraft project has presented new challenges to China's machine tool industry.
Although China has successfully developed regional aircraft, its manufacturing equipment cannot meet the complex, efficient and complex processing requirements of large aircraft for ultra-heavy and heavy-duty parts. Aviation manufacturers are facing upgrade options for large processing equipment.
At present, the machine tool equipment for processing key parts of aircraft in China's aviation manufacturing industry mainly relies on imports, and these machine tool equipments are products that are difficult to import from abroad or are not exported to China. Therefore, the large aircraft project is to improve the domestic production of high-end machine tools in China. The technical level raises urgent requirements.
The industry believes that we should vigorously develop multi-functional composite machine tools. Although some machining centers have realized the combination of various machining processes such as turning, milling, boring, grinding and polishing on one machine tool, this still cannot fully satisfy the processing of key parts of aviation in the future. The combination of machining and laser, electric, chemical, ultrasonic and other different processing methods, combined with a variety of different process characteristics of composite processing machine tools in the future aerospace manufacturing industry will have broad development and application prospects.
In addition, it is imperative to coordinate the development of machine tool and CNC system, functional components, cutting tools and measuring equipment, improve product functions, and improve the independent development and manufacturing capabilities of key supporting equipment. Equipment services in the process, in order to achieve the close integration of technology and equipment, machine tool enterprises must understand and familiar with the user process, pay attention to the development of user manufacturing process technology, accurately market positioning of products, research and development of new equipment to meet user requirements. Strive to provide users with machine tools and equipment, as well as provide overall solutions in process technology to enhance the competitiveness of enterprises and products.
At the same time, we attach importance to system design, integrate information technology, promote digital manufacturing, and vigorously improve the manufacturing process level of machine tools and the reliability and stability of the whole machine. In the technical route of machine tool equipment research and development, we insist on digitalization as the main body, integration as a means, featuring compositeization, aiming at high speed, precision and green, highlighting automation, networking, and finally achieving intelligence.
The stone of other mountains The development needs of major national equipment have pointed out the direction for the development of the machine tool industry. In view of the demand and development characteristics of aerospace equipment, how to meet the needs of the aerospace industry for manufacturing equipment, and better serve the aerospace industry is a problem that machine tool enterprises must solve.
Zhang Hui, general manager of China Aviation Technology International Industry and Trade Co., Ltd., told reporters according to his observation that many foreign equipment manufacturers have set up development departments that serve aviation production enterprises. They have been involved in the initial stage of development of a model aircraft. Collect information on the needs of aerospace manufacturing companies, convey this information to the product design department, and then develop procedures for the production of aerospace parts on machine tools, and track the development trend of aviation manufacturing, analyze this trend, and transform it into a company. Technical reserve. Many foreign equipment manufacturers have set up aviation customer sales managers in China, which are responsible for sales in the Chinese aviation manufacturing market, in order to strengthen contact with aviation manufacturing companies and feedback the needs of the aviation manufacturing market.
The development experience of foreign countries proves that the development of the aviation industry has its own laws, which must be demand guidance and market guidance. It is a common practice in the foreign countries to provide products for the trial of aviation companies by state investment, schools and equipment manufacturing enterprises. This is also the embodiment of the national will in the aviation industry. Now many advanced machine tools used in foreign aviation industry are invested by the state. What is produced is that the state funds to guide the market.
China has also been advocating to consider its own manufacturing equipment, but the equipment required by the aviation industry is very special. The design of the machine tool is completely determined according to the parts it produces. It is often a professional machine tool that only processes one type or one type of parts. . Due to cost, economic benefits, risks and other considerations, domestic machine tool equipment manufacturers often do not grasp this opportunity, the main reason is the lack of pioneering and cooperation awareness.
Zhang Hui believes that from the high-tech leadership of the aviation industry and the current status of China's aviation industry, China is required to carry out work in supplier management and life-time procurement in the technical transformation of aviation industry to improve procurement management. The level allows aerospace manufacturing enterprises to purchase equipment with stable quality, reasonable price and perfect service, thereby improving the R&D and manufacturing capabilities of aerospace manufacturing enterprises, enhancing their core competitiveness and realizing the industrial progress of the aviation industry.
As the “working machine†of the equipment manufacturing industry, the machine tool industry is responsible for providing excellent equipment for the manufacture of large passenger aircraft. Zhang Hui, general manager of China Aviation Technology International Industry and Trade Co., Ltd. believes that the aviation industry needs more equipment manufacturing products. This is a national behavior, and enterprises must respond. At the same time, the state must also actively guide.
In order to adapt to the development needs of China's aviation industry, China's aviation industry system has undergone new reforms at the end of 2008, and the former aviation industry group I and the second group were merged into a new China Aviation Industry Corporation, indicating that the country needs to concentrate. Resources and energy to develop the firm will and determination of the high-tech aviation industry represented by large aircraft. According to the relevant budget, from the research and development expenses of the large aircraft in the early stage to the production capacity construction, and finally to the final release of the products, the relevant investment will exceed 200 billion yuan.
Aerospace industry product parts are characterized by high temperature resistance, high strength and difficult processing. At the same time, there are many alloy materials and composite materials, many complicated structural parts and high process requirements. The plates or forgings used for the blanks of beams, frames, ribs and siding of large aircraft are large pieces weighing several hundred kilograms or even tons, which must be processed by heavy-duty, super-heavy machine tools.
After the large aircraft was established, Chinese equipment manufacturers heard the "machine" dance, and carried out various aspects of work around the large aircraft project. The machine tool industry is one of them. It is hoped that in the "big aircraft" project, opportunities will be obtained to improve product quality and improve industrial energy levels.
75%~95% of the blank material needs to be milled and milled, so it needs large-scale, high-speed, precision, multi-axis high-performance CNC floor milling machine and machining center; precision machining center and coordinate boring and milling machining center are needed for engine machining. There is also a need for a large number of high-rigidity, high-efficiency special machine tools and flexible automatic production lines.
In addition to machine tools, the domestic multi-channel modular CNC system is available, which can simultaneously process and operate more than 16 processes such as milling, grinding and drilling. Especially, the one-loading technology greatly improves the machining accuracy of the workpiece.
In addition, the machine tool industry must not only design, manufacture, install machine tools, flexible production lines and machining centers for aircraft manufacturers, but also provide consulting services, equipment packages, engineering contracting and turnkey projects for aircraft manufacturers. Therefore, the large aircraft manufacturing has given rare opportunities for the development of the machine tool industry, and the machine tool industry will take the opportunity to take off.
Demands are focused on modern aircraft to meet the performance requirements of high speed, high maneuverability, high load and long range. A large number of new technologies, new structures and new materials are used, and their parts are becoming more and more large in size and complicated in structure. Lightweight, material diversification and precision manufacturing. For example, typical parts of aircraft fuselage structural members, such as beams, frames, ribs, siding, purlins, and key components of aero-engines, various types of blades and integral leaf discs, have large outlines and different shapes.
Because modern aviation manufacturing is often faced with production tasks of multiple varieties, small batches, and short production cycles, the process system is required to have a high response speed. Typical parts of the aerospace manufacturing industry that require machining are mainly organic structural parts, engine key parts, landing gear parts and airborne product parts. Due to their different structural and performance requirements, the demand for machine tools is also different.
Aircraft fuselage structural parts mainly include beams, frames, ribs, siding and other parts. Most of these parts are made of aluminum alloy or titanium alloy. They are generally large in outline size and are thin-walled multi-cavity integral frame structure, mechanical cutting. The amount of removal is large and the surface quality is high. The processing of such parts requires large and heavy-duty machine tools, and requires a work platform with a load of more than 10 tons and a high-rigidity machine with an effective stroke of more than 15 meters.
The key components of the aircraft engine include compressors, combustion chambers, and turbines. Most of the parts of such products are high-temperature alloys or high-temperature resistant composite materials, which are generally shaped annular structures with poor rigidity, high precision, complex profiles and difficult processing. Large and medium-sized multi-function, high-precision CNC machine tools are required to process such parts. The equipment requires high flexibility, excellent numerical control system, powerful online measurement function, multiple working positions, large tool magazine capacity, such as large-scale precision CNC vertical turning. Center, five-axis linkage machining center and multi-axis CNC gantry milling, in addition to the development of high-performance impeller machining machine for engine impeller.
Aircraft landing gears are generally machined from forged blanks of high strength steel. Forging blanks require 10,000-ton presses, and the processing of blanks requires medium and large CNC floor boring and milling machines, five-axis linkage gantry machining centers and other equipment. There are many types of airborne product parts, complex structures, diverse materials and different performances. Processing such parts requires medium and small high-precision multi-function CNC machine tools and high-speed CNC milling machines, such as high-precision vertical and horizontal machining centers and high-precision machine tools such as turning, milling and grinding composite machining centers.
After the high-end gap China's large aircraft project, the CNC machine tool industry began to actively develop and produce machine tools for large aircraft parts. Huazhong CNC is a domestic enterprise engaged in the research and development and production of CNC systems. The five-axis CNC Milling Machine can process complex machine parts such as aircraft turbines. . Wuzhong and Huazhong CNC, two leading enterprises in the machine tool industry in Hubei Province, are also planning to cooperate in production, learning and research to provide high-quality machine tools for the production of large aircraft.
“The number of parts for large passenger aircraft ranges from 3 million to 5 million.†Liu Jihong, a professor at the Department of Aircraft Manufacturing Engineering at Beijing University of Aeronautics and Astronautics, said in an interview with this reporter that the “big aircraft†project will promote the development of the equipment manufacturing industry. Speed ​​up the development of high-end mechanical equipment.
“The aircraft itself is an equipment, made up of many other equipment.†He said, “In the process of developing the 'big aircraft', a large-scale precision high-end CNC machine tool is needed. For example, the large-scale structural components that make up the wing require more machine tools. Axle linkage and high-speed machining performance. It is understood that the main bearing structure of modern aircraft such as beams, frames, ribs and large siding blanks are all plates or forgings, weighing a few hundred kilograms or even tons, but the blank Many of the materials will be processed, so the processing workload is extremely large, and the use of high-speed CNC machining technology is a trend.
At present, the capacity of China's large-scale precision high-end CNC machine tools needs to be improved. The "Several Opinions of the State Council on Accelerating the Revitalization of the Equipment Manufacturing Industry" listed high-end CNC machine tools as one of 16 major development projects. "High-end machine tools also need the support of basic components, such as sensors, high-speed precision spindles, gears, etc. In this regard, there is a gap between China's related enterprises and foreign countries, there is a lot of room for improvement." Liu Jihong said, the Ministry of Science and Technology "Eleven In the five-tech support plan, many basic components, including the above components, will be listed as the focus of breakthroughs and developments in mechanical manufacturing technology.
In order to adapt to the development of the aviation industry, China's equipment manufacturing industry has achieved some results, such as the development of a beam-moving gantry five-axis machining center for large-scale aircraft parts processing, which can deep-process aircraft wings, turbines and propellers.
It is worth mentioning that the establishment of the 80,000-ton heavy-duty forging hydraulic press initially reflects the pull of the “big aircraft†project on the equipment manufacturing industry. As a key heavy equipment needed to support the large-scale independent research and development of large-scale aircraft in the country, the construction plan of the forging hydraulic press project is not only conducive to the development of “big aircraftâ€, but also promotes the manufacture of large-scale forging equipment and large-sized discs and structural parts in China. .
Urgent need to upgrade The aviation industry has always been the leading industry in the development of machine tools, and also a major consumer of machine tools. The implementation of the large aircraft project has presented new challenges to China's machine tool industry.
Although China has successfully developed regional aircraft, its manufacturing equipment cannot meet the complex, efficient and complex processing requirements of large aircraft for ultra-heavy and heavy-duty parts. Aviation manufacturers are facing upgrade options for large processing equipment.
At present, the machine tool equipment for processing key parts of aircraft in China's aviation manufacturing industry mainly relies on imports, and these machine tool equipments are products that are difficult to import from abroad or are not exported to China. Therefore, the large aircraft project is to improve the domestic production of high-end machine tools in China. The technical level raises urgent requirements.
The industry believes that we should vigorously develop multi-functional composite machine tools. Although some machining centers have realized the combination of various machining processes such as turning, milling, boring, grinding and polishing on one machine tool, this still cannot fully satisfy the processing of key parts of aviation in the future. The combination of machining and laser, electric, chemical, ultrasonic and other different processing methods, combined with a variety of different process characteristics of composite processing machine tools in the future aerospace manufacturing industry will have broad development and application prospects.
In addition, it is imperative to coordinate the development of machine tool and CNC system, functional components, cutting tools and measuring equipment, improve product functions, and improve the independent development and manufacturing capabilities of key supporting equipment. Equipment services in the process, in order to achieve the close integration of technology and equipment, machine tool enterprises must understand and familiar with the user process, pay attention to the development of user manufacturing process technology, accurately market positioning of products, research and development of new equipment to meet user requirements. Strive to provide users with machine tools and equipment, as well as provide overall solutions in process technology to enhance the competitiveness of enterprises and products.
At the same time, we attach importance to system design, integrate information technology, promote digital manufacturing, and vigorously improve the manufacturing process level of machine tools and the reliability and stability of the whole machine. In the technical route of machine tool equipment research and development, we insist on digitalization as the main body, integration as a means, featuring compositeization, aiming at high speed, precision and green, highlighting automation, networking, and finally achieving intelligence.
The stone of other mountains The development needs of major national equipment have pointed out the direction for the development of the machine tool industry. In view of the demand and development characteristics of aerospace equipment, how to meet the needs of the aerospace industry for manufacturing equipment, and better serve the aerospace industry is a problem that machine tool enterprises must solve.
Zhang Hui, general manager of China Aviation Technology International Industry and Trade Co., Ltd., told reporters according to his observation that many foreign equipment manufacturers have set up development departments that serve aviation production enterprises. They have been involved in the initial stage of development of a model aircraft. Collect information on the needs of aerospace manufacturing companies, convey this information to the product design department, and then develop procedures for the production of aerospace parts on machine tools, and track the development trend of aviation manufacturing, analyze this trend, and transform it into a company. Technical reserve. Many foreign equipment manufacturers have set up aviation customer sales managers in China, which are responsible for sales in the Chinese aviation manufacturing market, in order to strengthen contact with aviation manufacturing companies and feedback the needs of the aviation manufacturing market.
The development experience of foreign countries proves that the development of the aviation industry has its own laws, which must be demand guidance and market guidance. It is a common practice in the foreign countries to provide products for the trial of aviation companies by state investment, schools and equipment manufacturing enterprises. This is also the embodiment of the national will in the aviation industry. Now many advanced machine tools used in foreign aviation industry are invested by the state. What is produced is that the state funds to guide the market.
China has also been advocating to consider its own manufacturing equipment, but the equipment required by the aviation industry is very special. The design of the machine tool is completely determined according to the parts it produces. It is often a professional machine tool that only processes one type or one type of parts. . Due to cost, economic benefits, risks and other considerations, domestic machine tool equipment manufacturers often do not grasp this opportunity, the main reason is the lack of pioneering and cooperation awareness.
Zhang Hui believes that from the high-tech leadership of the aviation industry and the current status of China's aviation industry, China is required to carry out work in supplier management and life-time procurement in the technical transformation of aviation industry to improve procurement management. The level allows aerospace manufacturing enterprises to purchase equipment with stable quality, reasonable price and perfect service, thereby improving the R&D and manufacturing capabilities of aerospace manufacturing enterprises, enhancing their core competitiveness and realizing the industrial progress of the aviation industry.
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