Application of computer vision in welding

2022-08-22
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Application of computer vision in welding

Application of computer vision in welding Abstract: working principle and characteristics of centrifugal pump from compound machine tool to flexible production line cost-effective lean production hole processing technology development trend foreign enterprises gradually carry out domestic production superhard tool enterprises how to move towards the international market new development of modern new tool materials (Part 1) Fatigue test method of weld metal and welded joint controlled by PLC gb/t2656 ⑴ anti interference problem in the application of 981 system Hanjiang Machine Tool Development of the first tap grinder in China the selection of electrostatic instrument the work of temperature control valve is that it realizes the versatility principle of universal testing machine and related knowledge introduction of NC Macro Instruction (Central China) Analysis and treatment of power supply failure caused by harmonic wave of frequency converter the market prospect of China's machining center is promising, the development trend of CAD technology and suggestions for deepening the promotion and application of outsourcing processing in the aviation industry promote the rapid development of PCBN tool technology, the latest progress in efficient machining of large diameter deep holes, HTS drill head vibration cutting technology and parts processing surface integrity statistical analysis method considering the mechanical reliability during maintenance, the use characteristics and requirements of CNC machine tools [tag: tag] with the rapid introduction of electronic technology, computer technology, automatic control technology, information and software technology into the welding field, the automation and intellectualization of welding production have become an important direction of the development of welding technology in the 21st century. Computer vision has been widely used in the field of welding because of its large amount of information, high accuracy and large detection range, which provides a powerful means to realize the automation of welding operation. Borrow

with the rapid introduction of electronic technology, computer technology, automatic control technology and information and software technology into the welding field, the automation and intellectualization of welding production have become an important direction of the development of welding technology in the 21st century

computer vision has been widely used in the field of welding because of its large amount of information, high accuracy and large detection range, which provides a powerful means to realize the automation of welding operation. With the help of CCD camera, infrared camera, X-ray flaw detector, high-speed camera and other image sensing equipment and intelligent image processing methods, many robots and specific automatic welding machines also have certain visual functions. They can not only simulate the visual perception ability of skilled welders, but also transcend the limitations of people, such as acquiring and processing weld images under strong arc light and splash interference, Extract the characteristic parameters of the welding pool in real time, predict the welding organization, structure and performance, and realize the automatic welding construction in special occasions (such as underwater, space nuclear radiation environment, etc.) where it is difficult for humans to work directly, so as to ensure the stability and reliability of the weld quality

visual sensing in welding generally includes: single light point one-dimensional visual sensing with single or several photoelectric receiving units (including line array) as detection components; Planar array imaging two-dimensional vision sensor with mechanical scanning or electrical scanning; Three dimensional vision sensing is usually realized by comprehensively processing the information obtained by multiple low dimensional sensors

with the joint efforts of researchers at home and abroad, computer vision is widely used in the fields of weld tracking, weld pool shape and penetration control. Each year, the construction industry consumes about 1/4 of the total plastic production, weld bead morphology detection and control, and has made important contributions to welding production and process automation and intellectualization. In view of the complexity of the welding process, the higher-level requirements of advanced manufacturing industry for welding technology and the higher performance price ratio requirements of users for the new visual sensing system, it is also necessary to solve the problems of complexity and reliability, real-time and accuracy, controllability and intelligence of the system at present

looking forward to the future, adopting the latest computer vision theory, developing visual sensing and control technology for welding robots, and developing intelligent welding robots that can recognize the target environment, accurately track the trajectory at any time and adjust welding parameters have become one of the important development trends in the welding field. Many researchers at home and abroad have carried out fruitful research on the application of robot vision system in welding joint feature recognition, welding parameter optimization, torch pose adjustment, welding path planning, weld tracking, weld penetration control and so on. Foreign well-known welding robot manufacturers such as KUKA, GMF, Motoman, adept, etc. have successively developed robots equipped with new visual sensing systems. Compared with ordinary robots, new robots are widely welcomed in the market because of their broader application fields, more powerful functions and superior performance, and their price is usually twice that of ordinary robots. China has also successively developed intelligent special robot products with visual sensing function. Robots with visual function have been used in the production of automobiles, aerospace and heavy components, and in the welding production of boilers, pipelines and large spherical tanks

it can be predicted that in the near future, intelligent robots with visual functions will completely replace welders to complete welding operations in workplaces with harsh conditions such as deep water, outer space and nuclear radiation environment

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