industrial manipulator
An industrial manipulator is a robotic arm bolted in one place — usually on a factory floor — that does physical work like welding, painting, lifting, or assembling. It is the picture most people have in their head when they hear the word 'robot': a metal arm with a row of joints, swinging tirelessly through the same motions all day. It does not roll or walk anywhere; its job is to reach into the space around its base.
Like a human arm, it is built from rigid links connected by joints, and at the far end is a 'hand' called the end effector — which might be a gripper, a welding torch, a paint sprayer, or a suction cup, swapped to suit the task. By moving its joints in the right combination, the arm places that hand exactly where the work needs to happen, over and over, with great precision and speed.
This is the original and still most common form of working robot. Industrial manipulators shine at jobs that are repetitive, heavy, dirty, or dangerous — the kind of tasks where a machine's steadiness and stamina beat a tiring human hand. They are the reason a car body can be welded in the same exact spots on every single vehicle that rolls down the line.
On a car assembly line, a six-jointed arm grips a windshield, swings it into place, and presses it onto the body — then resets and does it again on the next car, thousands of times a day without a coffee break.
The arm's joints work together to place its end effector exactly where the task demands, repeat after repeat.
It stays in one spot and reaches into the workspace around its base; for a robot that travels, see a mobile robot instead.