Welding robot is an industrial robot engaged in welding (including cutting and spraying). According to the definition of International Organization for Standardization (ISO) that industrial robot belongs to standard welding robot, industrial robot is a multi-purpose, repeatable programmable automatic control manipulator with three or more programmable axes, which is used in the field of industrial automation.
Advantages of welding robot
With the development of electronic technology, computer technology, numerical control and robot technology, automatic welding robot has become increasingly mature since it was used in production in the 1960s, with the following advantages:
1. Stabilize and improve the welding quality, and can reflect the welding quality in numerical form;
2. Improve labor productivity;
3. Improve the labor intensity of workers and work in harmful environment;
4. Lower the requirements for workers' operation technology;
5. It shortens the preparation period of product transformation and reduces the corresponding equipment investment.
Therefore, welding robot has been widely used in all walks of life.
1. Production line
The welding robot production line is relatively simple to connect multiple workstations (units) with workpiece conveying lines to form a production line. This production line still maintains the characteristics of single station, that is, each station can only use the selected workpiece fixture and welding robot program to weld the predetermined workpiece, and this line cannot weld other workpiece for a period of time before changing the fixture and program.
The other is welding flexible production line (FMS-W). The flexible line is also composed of multiple stations. The difference is that the welded parts are installed on a uniform form of tray, and the tray can be matched with the positioner of any station on the line and automatically clamped. The welding robot system first identifies the number of the pallet or the workpiece, and automatically calls out the program for welding this workpiece for welding.
2. Application in automobile production
At present, welding robots have been widely used in the automobile manufacturing industry, such as the welding of automobile chassis, seat frame, guide rail, muffler and hydraulic torque converter, especially in the welding production of automobile chassis. Toyota has decided to use spot welding as a standard to equip all its spot welding robots in Japan and abroad. This technology can improve the welding quality, and even try to replace some arc welding operations with it. The movement time in short distance is also greatly shortened. The company recently launched a low height spot welding robot to weld the lower parts of the car body.
3. Underwater application
As an important part of marine engineering equipment technology, marine welding has now become an indispensable foundation and support technology for marine resources development and marine engineering construction.