The aviation industry has entered the golden development period, and the demand for high-precision machine tools is strong.

The aviation industry has entered the golden development period. The National Medium- and Long-Term Science and Technology Development Plan (2006-2009) has included large aircraft projects in 16 major projects, establishing the development of civil aircraft industry, opening up the civil aircraft market and becoming a major aviation country. And the basic development strategy of the aviation powers shows the firm will and determination of the country to develop civil aircraft represented by large aircraft. In 2008, China's aviation industry system reform, the aviation first and second group merged into China Aviation Industry Corporation, the new formation of China Commercial Aircraft Co., Ltd., is the country's major efforts and attempts to achieve this strategic vision.

The civil aircraft industry will use this as a starting point to form an emerging industry in China. This emerging industry has enormous potential and business opportunities. According to the latest forecast of Boeing in 2009, China needs 3,770 new aircraft in the next 20 years, with a total value of 400 billion US dollars. The ARJ21-700 regional aircraft with China's independent intellectual property rights has been in the airworthiness and evidence collection stage, but has 240 orders. In fact, large passenger aircraft and regional aircraft are only part of the classification of civil aircraft. The civil aircraft category includes not only commercial aircraft of large trunk passenger and cargo transport aircraft and regional aircraft, but also widely used in industry, agriculture, forestry, fisheries, mining, General-purpose aircraft in the fields of construction and other fields, as well as medical and health, disaster relief, meteorological exploration, marine monitoring, scientific experiments, remote sensing mapping, education and training, culture and sports, business flights, private aviation, tourism and other fields. In these areas, the demand for aircraft applications is increasing with the rapid development of the economy, and the application field of aircraft will be further expanded.

Driven by market demand, at present, China's aviation industry's independent innovation results have also gained a lot. The new advanced military aircraft, trainer aircraft and helicopter gunships represented by æ­¼10, æ­¼11, æž­é¾™, Feibao, Falcon, Mountain Eagle, K8, and Zhi 8, Wuzhi 10 have become the main force of our military equipment. The R&D and manufacturing industries of ARJ-700, Xinzhou 60, Xinzhou 600, Xinzhou 700 and other multi-purpose helicopters such as Zhi 9, Zhi 11 and EC 120 have made significant progress and have been or will be introduced to the market. These achievements have laid a solid foundation for the development of China's aviation industry.

At the same time, the aviation engine R & D and manufacturing bottleneck has also made a major breakthrough. The latest developments of aero-engines such as Kunlun, Qinling and Taihang have already or will soon end the bottleneck that restricts the development of China's aviation industry for a long time. The era of domestically produced aircraft using domestic engines has arrived. Although the aero engine is a part of the aircraft, it is a "crown diamond." The breakthrough of this technology has decisive significance for the development of China's aviation industry.

From the perspective of the external market environment, China's aviation industry has broad prospects for international cooperation, and the international market has great potential. The practice of world civil aircraft production is global procurement. Although the international financial crisis has had some adverse effects on the subcontract production of China's aviation industry, the development prospects of the international air transport industry are still optimistic, and its fast and convenient features are also other transportation industries. Can not be replaced. In addition, China's aviation products are characterized by high quality and low price, which is especially suitable for the needs of developing countries. Take the K8 trainer as an example. Up to now, it has exported more than 300 aircraft and has more than 150 hand-held orders worth more than RMB 5 billion to meet the three-year production needs of the company. After the 60th anniversary of the National Day military parade, global orders have shown rapid growth.

According to the relevant person in charge of China Commercial Aircraft Co., Ltd., the large aircraft project will invest 60 billion yuan within 3 to 5 years, of which 30 billion yuan will be used as the preliminary research and development expenses, and another 30 billion yuan will be used for capacity building, and finally put into the market, relevant The total investment will reach 200 billion yuan, equivalent to the total investment of the Three Gorges Project. Such a large investment scale is not the entire investment of China's aviation industry, as well as the investment of China Aviation Industry Corporation, which is responsible for large-scale transport aircraft missions, and the investment costs for military aircraft and various general-purpose aircraft. An emerging fast-growing industry with huge potential for development should have a very large investment scale. It is not difficult to draw such a conclusion when reviewing the scale of investment in the automobile industry after China entered the WTO.

Industry profile scan
In 2008, China Aviation Industry Corporation achieved a total revenue of 166 billion yuan, a year-on-year increase of 12.31%, and realized profits and income of 7.2 billion yuan, an increase of 11.58% year-on-year. Compared with less than 40 billion yuan in 1999, it achieved quadrupling growth.

In 2009, China Aviation Industry Corporation's total revenue and profit increased by 11.43% and 34.85% from January to September, respectively. The growth rate was higher than the average level of central enterprises and military industry groups, and the comprehensive benefit index increased by 2.7 percentage points year-on-year.

High-precision machine tools are in high demand
The aircraft is the most complex and technologically advanced product ever made by humans. A large aircraft consists of 3 to 5 million parts, and it is well known that the complexity of its parts and the near-rigid quality requirements have absorbed a large number of high-tech and high-quality equipment.

The demand for large aircraft for machine tools, first, because it belongs to the emerging industry, involves the field that China's machine tool industry has not been involved in before, giving the machine tool industry a new development opportunity. Second, because of the "big" size of the large aircraft, the original part of the manufacturing equipment can not meet its requirements for the "big" specification, which makes the manufacturing equipment of the large aircraft have the need for replacement. Third, the large aircraft includes the entire civil aircraft category. Due to its own commercial nature, it has its own special requirements and standards in terms of safety, economy, environmental protection, comfort, airworthiness, etc. The equipment will not be able to meet the processing technology requirements of its parts. Fourth, with the development of the materials industry, more and more new materials and high-tech composite materials are adopted by the aircraft manufacturing industry, and the corresponding manufacturing equipment needs to be dealt with. Fifth, in order to improve safety and reliability, minimizing the total number of parts, the adoption of the overall manufacturing technology is the development trend of the world aviation manufacturing industry, and undoubtedly puts new requirements on the variety, function and performance of the machine tool. In addition to the direct demand of the aviation manufacturing industry for machine tools, due to the close relationship with other industrial industries such as machinery, electronics, materials, metallurgy, instrumentation, and chemical industry, the rise of aviation manufacturing industry will also trigger the rise of demand in related industries, also for machine tools. Industry market expansion brings new opportunities.

Due to the wide variety of aircraft parts, the demand for machine tools is divided into two categories: machine structural parts processing and engine parts processing.

Three-to-five-axis gantry milling and milling machine with large specifications and working table size of 5000mm×20000mm or more for machining of structural parts of the body, for beam, wall and frame parts processing; five-axis linkage dedicated to wing beam processing Dingliang gantry mobile profiling composite machining center; vertical machining center and CNC vertical milling machine for machining wing longitudinal wall, half frame, rib and joint parts; five for machining high-precision parts Shaft horizontal machining center; Wuzhou elevated gantry profile milling machine with a width less than 1000mm and spindle speed of 30000r/min~40000r/min; turning and milling combined machining center and skin stretching machine for processing main frame and buffer strut of landing gear , skin roll forming machine, three-roll leveling machine and profile drawing machine.

The machine tools required for the machining of engine structural parts include CNC vertical and CNC precision vertical lathes, CNC horizontal lathes, vertical machining centers, vertical and horizontal conversion machining centers, CNC slow-feed grinding machines, CNC wire cutting machines, and electric spark honeycomb machines. Horizontal horizontal five-axis machining center, precision double-spindle turning and milling composite center, thread rolling machine with maximum rolling diameter up to mm80mm, CNC ultra-precision lathe, multi-stage electric pulse small hole processing machine, CNC EDM high-speed small hole machine, Five-axis blade machining center, CNC vertical table grinding machine, etc.

The requirements of the aviation industry for machine tools almost cover the full results of modern machine tools, which is why domestic machine tools are difficult to enter their core manufacturing. The machine tool industry should firmly grasp the rare opportunity for the aviation industry to enter the golden period of development, and vigorously improve the technical content and manufacturing level of the products.

Need new tool materials
In order to improve aircraft flight efficiency and reduce their life cycle costs, aircraft manufacturers are increasingly using composite materials and titanium alloys. For example, most of the fuselage of the Boeing 787 and Airbus A350 will be made of composite materials. In the commercial airliner market, Hawker Beechcraft's PremierIA and Hawker4000 aircraft will be made entirely of composite materials; the EV-20Vantage aircraft of the Aviation company will also be fully composited in the wings and fuselage. As composite materials, titanium alloys, and laminates made of two materials are increasingly used in aircraft structural parts, challenging requirements are required for cutting processes that require the use of high hardness, high toughness tool materials.

The use of composites facilitates the merging and joining of parts, reducing the number of fasteners required. However, most of the fasteners that have been eliminated are "area fasteners" - a large number of small diameter fasteners that can be machined in an automated process. Therefore, most of the fasteners retained have larger mounting holes and thicknesses, and are laminated with a variety of materials, making processing more difficult. Since the contact between the graphite composite and the aluminum may cause chemical current corrosion, the structural members mounted on the graphite composite are usually aluminum. Drilling of these two materials is difficult, and it is more difficult to combine them into a laminate for drilling. Therefore, in addition to the different drilling parameters than the traditional workpiece materials, different tool materials are required.

In addition to the challenges of drilling these new materials that are compounded by different materials, the current aircraft fuselage assembly presents new challenges to the performance and quality of drilling: for thick laminate composites Drilling larger diameter holes; increasing the assembly time of the fuselage, increasing the need for “one-off” drilling, dry or near dry drilling, and efficient assembly; these factors significantly reduce tool life . Therefore, in order to reduce the processing cost per hole and increase the productivity, new tool materials are needed.

In addition, in order to shorten the process time of the final assembly process, it is also necessary to increase the service life of the tool.

As the market demand for aircraft continues to grow, the tool industry ushers in a broad market opportunity. At the same time, it also puts forward higher requirements for domestically produced tools, and develops and supplies tools with better processing performance for China's aviation industry. Daoyuan.