Aerospace field laser welding robot application

Replacing the traditional riveted fuselage wall panel with the welded integral fuselage wall panel can greatly reduce the weight of the component, reduce the manufacturing cost, and improve the production efficiency, thus becoming one of the development trends of the large-scale civil aircraft manufacturing technology. Because the double laser beam welding is more effective for the weight reduction effect of the skin long raft structure, and has better spatial accessibility for complex components, it has received extensive attention. At present, aeronautical manufacturing companies such as Airbus have adopted laser-welded overall fuselage wallboard manufacturing technology on their various models. However, the welding-based overall fuselage wall manufacturing technology is one of the difficulties in contemporary civil machine manufacturing technology. At present, the new aluminum alloy welding technology of the fuselage wall panel in the design scheme of large passenger aircraft in China has its own characteristics.

Due to its high repeatability, reliability and applicability, robots are used in all walks of life. At present, the aerospace product manufacturing process is still labor intensive, complicated in process, poor working conditions, supplemented by a large number of fixtures and hand-made. Mainly. Insufficient automation production capacity has become a bottleneck restricting the reliability and production capacity of weapons and equipment. Under the background of China's vigorous development of aerospace, aerospace manufacturing enterprises use industrial robots for automated production, which is of great significance to the transformation and upgrading of production models and the improvement of advanced manufacturing capabilities of equipment, and the important links in the manufacturing process of welding formal aerospace products. The role of laser welding robots here is extremely important.

Robot laser welding technology is broad in the manufacturing market

The major industrialized countries in the world attach great importance to the role of welding research institutions, and basically form a three-level research and development system for university research enterprises. Welding institutes have been established in major industrialized countries, such as the Welding Research Institute (TWI) in the United Kingdom, the Edison Welding Institute (EWI) in the United States, the FWI in France, and the JRWI in Japan. , the Polish Institute of Electric Welding (PEWI) in Ukraine, the Welding Research Institute (ISF) of the University of Aachen, Germany, and the Welding Research and Training Center (SLV) of the German Welding Society (DVS), etc., and welding in Korea. The research center is located within the KITCH of the Korea Industrial Production Technology Research Institute of the Korea Institute of Modern Science and Technology (KAIST). They are all national welding research institutions.

The future research directions of robot welding technology are:

1) Intelligentization of the welding process control system. The development of electronic technology, computer microelectronics and automation technology has promoted the development of welding automation technology. In particular, the introduction of unit technologies such as numerical control technology, flexible manufacturing technology and information processing technology has promoted the revolutionary development of welding automation technology;

2) Conduct research on optimal control methods, including linearity and various nonlinear controls. The most representative are the fuzzy control of the welding process, neural network control, and the study of expert systems;

3) Welding flexibility technology. Combine various light, machine and electric technologies with welding technology to achieve precision and flexibility of welding. Renovating traditional welding process equipment with microelectronics technology is the fundamental way to improve the level of welding automation. The CNC technology is equipped with various welding machinery and equipment to improve its flexibility level;

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