Robot Workstation - What should be noted when using spot welding robots?

Firstly, when choosing a spot welding robot, the requirements for motion are generally not as strict as those for arc welding robots (theoretically, even requiring point-to-point motion control functions). The following points should be noted:
1. Like arc welding, the first issue is the robot's weight grabbing. Due to the relatively large weight of the spot welding pliers, the robot usually chooses 150-250kg for weight grabbing. In addition to considering the weight grabbing ability, inertia should also be considered during high-speed operation. It is particularly important to note that some manufacturers use the intersection point of the rotation axis of the 5th and 6th axes as the reference point for robot weight grabbing, rather than the end of the 6th axis. Therefore, special attention should be paid when calculating the load and inertia,
2. Range of motion and structure: Based on the size of the workpiece being welded and the spot welding clamp, the robot's motion radius is usually selected as 2.00-3.00m. After the size of the spot welding clamp structure is determined, it is best to verify whether the robot's motion range meets the requirements through simulation; At the same time, we hope that the robot structure has good rigidity, is sturdy and reliable, and reduces inertial impact during motion.
3. Repetitive positioning accuracy: The requirements for spot welding robots are relatively low, generally ranging from 0.1 to 0.5mm.
4. Selection of welding tongs and spot welding control: Welding tongs and spot welding control are the most important auxiliary equipment in spot welding robots, and integrated welding tongs are generally used. If possible, it is best to choose a medium frequency spot welding controller to reduce the weight and volume of transformers.