What part of a robot is referred to as the "arm" that actually moves and reaches?

The part of a robot referred to as the "arm" that actually moves and reaches is known as the manipulator. The manipulator is a crucial component of robotic systems, designed to provide the robot with the ability to move in various directions and perform tasks with a range of motion. It typically consists of joints and segments that mimic the functionality of a human arm, allowing it to perform complex movements such as lifting, rotating, or positioning objects.

The structure of the manipulator allows it to be articulated, giving it the flexibility to navigate different environments and interact with various objects. It plays an essential role in applications like assembly, packaging, and material handling where precise movements are required. Understanding the manipulator's function is key to grasping basic robotic operations, as it directly influences the robot's capabilities in completing tasks.