Recently, the relevant information disclosed the progress of domestic composite material automatic laying machine for the first time. The improvement of domestic composite material automatic laying machine has been used in the production of a certain type of wing body fusion body, S intake port and other components, which has improved manufacturing efficiency and laid a foundation for mass production of aircraft a solid foundation.
From this description, it can be speculated that these components are likely to be components of the J-20 stealth fighter. In order to reduce the aircraft's RCS, measures include wing body integration, S inlets, etc. The mass production of the J-20 has been or is about to progress. Into the fast lane.
Many parts of the J-20 require automatic composite wire laying machine to produce many parts of the J-20 require automatic composite wire laying machine to produce. For stealth fighters such as the J-20, on the one hand it needs to reduce RCS, so it is necessary to use a wing body. The design of fusion, S intake port, etc., on the other hand, it must reduce the weight of the aircraft structure and increase the proportion of composite materials. The proportion of carbon fiber used by F-35 fighters has exceeded 35%. Successfully developed T800 and T1000 grade carbon fibers can be used in the production of fighter -20 fighters. However, with qualified carbon fibers, it is necessary to use supporting processing equipment to process the corresponding components. Therefore, advanced composite material processing equipment has become the fighter -20 mass production. key.
The early composite materials were manually laid, with low labor efficiency, high reject rate, and limited production speed. Since then, automatic composite tape laying machines have appeared. It uses an automated system to replace manual to lay composite materials, thereby achieving automatic laying and automatic molding. Improved labor efficiency and reduced production costs. In the 1980s, the composite material automatic tape laying machine was used for military aircraft manufacturing. The B-2 bomber was manufactured using this technology. The country broke through the automatic material tape laying technology in the new century. Strongly support the development of new domestic combat aircraft.
Production of hundreds of F-35 fighters, the key to the role of automatic wire laying machine for composite materials. Production of hundreds of F-35 fighters, the key to automatic wire laying machine for composite materials. Components, such as wings, tails, etc., cannot process parts with high curvature. This disadvantage limits its use on the fourth-generation stealth fighter. As mentioned earlier, the fourth-generation stealth fighter uses a large number of curved components, such as S intake. It is difficult to produce such a part with an automatic tape laying machine, and in this case, an automatic wire laying machine for composite materials has appeared.
The composite material automatic laying machine uses a computer to lay the carbon fiber tow. Due to the computer-controlled laying trajectory, the tow can be individually controlled and released, and it can be turned and laid. The performance in all aspects is further improved than the automatic laying. First, It can manufacture composite curved parts, and there are no restrictions on the size of the manufactured parts, which can be large or small, with higher manufacturing efficiency and lower costs. It can be said that the automatic wire laying machine has laid a solid foundation for the large-scale application of composite materials in aircraft.
There should be no obstacles in the production of stealth aircraft. There should be no obstacles in the production of stealth aircraft. Due to the important role of automatic composite wire laying machines, foreign countries have imposed strict embargoes on our country. After efforts, domestic related units have broken through the automatic laying of composite materials. The development technology of the silk machine has achieved localization. According to relevant information, the domestic composite automatic wire laying machine allows one-way prepreg ribbon to be continuously and fully laid in any direction on the forming mold, and adapts to the change in surface curvature of the part to complete the pre-processing. The dipping tow, positioning, ultrasonic cutting, rolling, tape tension control, defect detection and other actions, the equipment is often compact, which can fully meet the requirements for automatic laying of composite components of aircraft fuselage. At present, the production of components such as the aircraft S intake duct and wing body fusion has been completed.
It is precisely due to the advancement of domestic materials and manufacturing processes that the development of the J-20 fighter has been carried out smoothly. Especially in the production stage, the ramp-up of production capacity has been completed quickly and the mass production stage has been entered. From the overseas data, the J-20 fighter was in 2011. It flew for the first time in 2016 and delivered troops in small batches in 2016. The first combat brigade has been formed in early 2019. It is expected that it will enter the full-speed production stage after 2020. In comparison, the Russian Su-57 fighter is still struggling to finalize the design. Not long ago, it was reported that the United States has decided to embargo the Russian MS-21 passenger aircraft, leaving this project at a standstill, indicating that Russia still has deficiencies in composite materials and manufacturing processes, which has restricted the development and production of Su-57 fighters.