When discussing the question of "whether a robot arm can be called a robot", we must first clarify the definitions and characteristics of "robot arm" and "robot".
A robot arm usually refers to an automatic operating device that can imitate certain movement functions of human hands and arms to grasp, carry objects or operate tools according to a fixed program.
It mainly focuses on the fine operation and grasping ability of the hand (or end effector) and is an important part of robotics.
A robot is a machine device that can perform work automatically. It can accept human commands, run pre-programmed programs, and act according to the principles and guidelines formulated by artificial intelligence technology.
The definition of a robot is more extensive. It not only includes the operation ability of the hand (or end effector), but also covers multiple functions such as movement, perception, and decision-making.
From these two definitions, the robot arm is indeed a key part of robotics, but it itself is not equivalent to a complete robot.
A complete robot usually contains multiple parts, such as a mobile mechanism, a perception system, a control system, etc., and the robot arm is only a part of it, mainly responsible for operation or grasping tasks.
Therefore, in a strict sense, we cannot directly call a robot arm a robot. However, in everyday language or non-professional contexts, people may sometimes use the broader term "robot" to refer to devices with some automated operating capabilities, including but not limited to robotic arms.
But in professional fields or situations where precise description is required, we should distinguish between the concepts of robotic arms and robots.
In summary, robotic arms are an important part of robotics technology, but they are not equivalent to complete robots. In formal or professional situations, we should accurately distinguish between these two concepts.