Robot welding is the use of mechanized programmable tools (robots), which completely automate a welding process by both performing the weld and handling the part. Processes such as gas metal arc welding, while often automated, are not necessarily equivalent to robot welding, since a human operator sometimes prepares the materials to be welded. Robot welding is commonly used for resistance spot welding and arc welding in high production applications, such as the automotive industry.
An articulated robot is a robot with rotary joints that has 6 or more Degrees of Freedom . This is one of the most commonly used robots in industry today (many examples can be found from legged robots or industrial robots). Articulated robots can range from simple 6 Degree of Freedom structures to systems with 10 or more interacting joints and materials.They are powered by a variety of means, including electric motors.
Some types of robots, such as robotic arms, can be articulated or non-articulated.