The accuracy of welding robots is affected by many factors, including the load on the robotic arm, tool wear, and the complexity of the workpiece. Besides using high-precision measuring instruments, accuracy can be compensated for through welding auxiliary equipment and welding control systems. Furthermore, with the continuous improvement and development of welding robot technology, the tolerance for errors in weldment requirements is relatively small.
Develop a dedicated welding process
Develop welding processes specifically for welding robots, with strict process specifications for part dimensions, weld bevels, and assembly dimensions during programming. Generally, the tolerances for part and bevel dimensions are controlled within ±0.8mm, and the assembly dimension errors are controlled within ±1.5mm. This can significantly reduce the probability of welding defects such as porosity and undercut in the weld.
Use auxiliary equipment to ensure accuracy
High-precision assembly fixtures are used to improve the assembly accuracy of the weldment. The welding positioner can hold the weldment within the welding range of the welding torch, reducing the distance between the weld and the welding torch. This allows the welding torch to lower the welding material precisely to fill the weld, ensuring a beautiful and strong weld. The automatic weld tracking technology allows the control system to identify the weld specifications, adjust appropriate welding parameters, and enable the actuator to precisely weld the weld.
Welding robotic arm load capacity
Welding robots can achieve stable welding in harsh environments thanks to the load capacity of the welding machinery. If the weight of the workpiece is controlled within the load capacity of the welding robot arm, the welding robot arm can maintain stable welding quality while ensuring flexibility. The robot arm can also achieve precise welding during the swinging process.
Keep the equipment clean.
The weld seam should be kept clean. Before welding, ensure there is no oil, rust, welding slag, cutting slag, or other debris. A weldable primer is permissible. Otherwise, the success rate of arc ignition will be affected. Tack welding should be changed from shielded metal arc welding to gas shielded welding. Simultaneously, the tack weld area should be ground to avoid residual slag or porosity, which could lead to unstable arcs or even spatter.
Multi-layer multi-track welding
Multi-layer, multi-pass welding involves depositing two or more weld layers to complete the welding of the entire seam. This reduces the heat input during repeated operations, thereby lowering the incidence of welding defects and ensuring accuracy in repetitive activities.
