Electric Gripper

A motor-driven robot gripper whose opening position, speed, and grip force can all be precisely controlled.

An electric gripper is an end effector mounted on a robot arm whose fingers are opened and closed by a motor, usually through a lead screw, gears, or a linkage. Compared with a pneumatic gripper, which is pushed by compressed air, it needs no air supply, can precisely set opening width, closing speed, and grip force, and can report back its current position and current draw — making it well suited to fragile objects and tasks that need feedback. Its downside is that it's generally more expensive than a pneumatic gripper and produces somewhat less force and speed. The most common choice in embodied-AI research is the two-finger electric gripper, because it has just one degree of freedom, giving a simple action space that's easy to teleoperate and learn policies for; the gripper action recorded in most datasets is just a single opening value.

ExampleThe Robotiq 2F-85 and Franka's stock gripper are both common two-finger electric grippers in research.

Related

Gripper · Parallel Jaw Gripper · Pneumatic Gripper · End Effector · Robotiq 2F-85 Gripper · Fingertip Force / Grip Force

Sources

Robot end effector - Wikipedia