First, the importance of automatic welding positioning
Welding positioning refers to ensuring that the welding gun or welding robot can be accurately aligned with the part to be welded during the welding process. Accurate positioning can ensure the quality of welding and avoid welding defects caused by deviation, such as weld deviation and unstable welding. At the same time, good positioning can also improve production efficiency, reduce scrap rate and save costs.
Second, the commonly used automatic welding positioning method
1. Mechanical positioning
Mechanical positioning is achieved by clamping and fixing devices. The advantages of this method are simple structure, low cost, and suitable for mass production and regular shape of the workpiece. However, for production lines with complex shapes or requiring frequent workpiece changes, mechanical positioning is not flexible enough.
2. Visual sensor method
This method utilizes machine vision technology to identify and locate welding locations. By installing a vision sensor on the welding workpiece and using the corresponding software to process and analyze the image, the automatic recognition and positioning of the welding position can be realized. This method has the advantages of accurate positioning, fast speed and wide application range, but there are also some challenges, such as the influence of lighting conditions, sensor calibration and so on.
3. Laser sensor method
This method uses laser measurement technology to locate the welding position. By installing the laser sensor on the welding workpiece and using the corresponding software to process and analyze the laser signal, the precise measurement and positioning of the welding position can be realized. Laser sensor method has the advantages of high measurement accuracy, fast speed, and suitable for complex shape workpieces, but the cost is high and the equipment installation is relatively complicated.
4. Arc tracking
Arc tracking calculates the offset between the weld and the programming by touching the two faces of the base metal, and then adjusts the position of the welding gun through the corresponding algorithm or mechanism to achieve accurate welding.
There are many ways to locate the welding position in automatic welding, and each has its own advantages and disadvantages. In practical application, it is necessary to choose the appropriate positioning method according to the specific situation. At the same time, with the continuous development of technology, it is believed that more advanced automatic positioning technology will be applied to the field of automatic welding in the future, providing strong support for improving welding efficiency and quality.
