How do industrial robots use programmed mechanical arms in manufacturing?

Industrial robots utilize programmed mechanical arms to perform repetitive, hazardous, or physically demanding tasks in manufacturing environments. These robots function as multifunctional manipulators, consisting of a mechanical structure controlled by a computer system.123

Mechanical Structure and Operation

The manipulator is composed of a sequence of links and joints, typically divided into two sections:
* Arm-and-body: Uses three joints to position tools or parts within the robot’s work envelope.3
* Wrist: Uses two or three compact joints to orient tools or parts at the specific work location.3

Attached to the wrist is a gripper or specialized tool, such as a spot-welding gun or spray-painting nozzle, which allows the robot to interact with the environment.32

Programming and Control

The robot’s control system acts as its brain, processing data and directing actuators to execute tasks. Programming methods include:1
* Lead-through programming: Physically moving the manipulator or using a control box to record motion sequences into the computer’s memory.4
* Programming languages: Using specialized software to issue motion-control and input/output commands, allowing for complex decision-making and coordination with other factory equipment.4

By utilizing these programmable systems, manufacturers can easily adapt robots for different tasks or product styles, significantly increasing production efficiency and accuracy.25