The end-effector on the robot arm is always a gripper.

• A. True
• B. False
• C. Sometimes
• D. Only for certain robots

Answer: (B)

The end-effector is the device at the end of a robot arm that directly interacts with the work environment. It isn’t limited to a gripper. While a gripper is common for picking up and moving objects, many tasks require other tools: a welding torch or soldering iron for joining parts, cutting or drilling tools, suction cups, laser or plasma heads, sensors or probes for inspection, or even a 3D printer extruder. Some systems use a tool changer to swap end-effectors depending on the task. Because not every operation involves grasping, the statement that the end-effector is always a gripper is false.