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How do robots perform spray painting and arc welding?
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At the top of the machine is a stack of punched cards that would be fed into the loom to control the weaving pattern. This method of automatically issuing machine instructions was employed by computers well into the 20th century.
In industrial automation, robots perform spray painting and arc welding by manipulating specialized tools attached to their wrists, known as end effectors. These tasks are categorized as robotic processing operations, where the robot serves as a substitute for human labor in environments that are often hazardous or uncomfortable.12
- Arc Welding: This is a continuous process in which the robot moves a welding gun along a specific seam on the workpiece. The robot is programmed to follow a defined path, ensuring the welding rod maintains the correct position and motion to complete the joint.12
- Spray Painting: In this application, the robot manipulates a spray-painting gun over the surface of the object to be coated. By controlling the movement of the gun, the robot ensures consistent coverage across the surface.1
To perform these tasks, robots are programmed with specific motion sequences, either through lead-through programmingāwhere the robot is physically guided through the motionsāor through computer programming languages that dictate precise paths and input/output signals. These systems allow for high precision and repeatability in repetitive manufacturing environments.312