Welding robots are industrial robots engaged in welding (including cutting and spraying). According to the definition of standard welding robot in the international organization for Standardization (ISO), industrial robot is a multi-purpose, programmable automatic control manipulator with three or more programmable axes, which is used in the field of industrial automation.
With the development of electronic technology, computer technology, numerical control and robot technology, the technology of automatic welding robot has become increasingly mature since it was used in production in the 1960s. It mainly has the following advantages:
1. Stabilize and improve the welding quality, and reflect the welding quality in numerical form.
2. Improve labor productivity.
3. Improve the labor intensity of workers and work in harmful environment.
4. Which reduces the requirements for workers' operation skills.
5. It shortens the preparation period for product transformation and reduces the corresponding equipment investment.
Welding robots have been widely used in all walks of life.
1. Application in production line
The welding robot production line is relatively simple in that multiple workstations (units) are connected by workpiece conveying lines to form a production line. This production line still maintains the characteristics of a 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 can not weld other workpiece for a period of time before changing the fixture and program.
The other is the welding flexible production line (fms-w). The flexible line is also composed of multiple stations. The difference is that all the welded parts are clamped on a uniform tray, and the tray can be matched with the positioner of any station on the line and clamped automatically. 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 overseas. The welding quality can be improved by this technology, so it is even attempted to replace some arc welding operations. The movement time in a 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. Application under water
As an important part of marine engineering equipment technology, marine welding has become an indispensable foundation and support technology for marine resource development and marine engineering construction.
