Welding technology, as a traditional basic process and technology in manufacturing, has a long history of application in industry, but its development is very rapid. Welding robots are developed on the basis of industrial robots on advanced welding equipment, it is engaged in welding (including cutting and spraying) of industrial robots, mainly used in industrial automation, which is widely used in the manufacture of motor vehicles and parts, motorcycles, construction Machinery and other industries have been widely used in the four major production processes of stamping, welding, painting and final assembly of automobile production. Among them, arc welding and spot welding are the most widely used.
Typical welding robot systems are available in the following forms: welding robot workstations, welding robot production lines, and welding special machines. The welding robot system is generally suitable for medium and small batch production. The weld seam of the welded workpiece can be short and many, and the shape is more complicated. Flexible welding lines are particularly suitable for use in a wide variety of products, with very few batches per batch. The welding special machine is suitable for products with large batch size and slow modification. It is also suitable for workpieces with small number of welds and long shape and regular shape. As for the type of automatic welding production, it depends on the actual situation of the enterprise.
Typical application in the automotive field
Looking at the welding status of the entire automotive industry, it is not difficult to analyze the development trend of the automotive industry's welding: development of automated flexible production systems. Industrial robots, because of the combination of automated production and flexible production characteristics, have been used in large and rapid use of robots in recent years. In terms of welding, spot welding robots and arc welding robots are mainly used. Especially in recent years, domestic automobile manufacturers pay great attention to the automation of welding. For example, the automation rate of 13 production lines of the Jetta body welding shop introduced by FAW is over 80%, and each line is controlled by a computer (programmable controller PLC-3) to automatically complete the workpiece transfer and welding. The welding is carried out by a total of 61 R30 polar coordinate robots and G60 toggle robots. The robot drive is controlled by a microcomputer, digital and text display, and tape recorder input and output programs. The robot's action uses a point-to-point sequence trajectory with a high level of welding automation, which improves working conditions, improves product quality and productivity, and reduces material consumption.
Similar high-level production lines have been introduced in Shanghai and Wuhan. However, these are still far from adapting to the rapid development of China's national automobile industry. We must adhere to technological innovation, accelerate the development of energy-efficient new welding materials, new processes and new equipment, develop and apply robotic technology , and develop lightweight and smart smart devices. To establish an efficient and economical welding automation system, it is necessary to transform traditional industries with computer and information technology to improve the grade.
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