Which gripper looks similar to the end of a drill motor used to grasp drill bits?

• A. Locking
• B. Pincer
• C. Suction
• D. Collect

Answer: (D)

The main idea here is recognizing end effectors by their gripping geometry. A drill chuck clamps drill bits with multiple jaws that converge to grip tightly around the tool shank. The gripper that best matches that jaw-like, multi-point clamping design is the collect-type gripper, which uses several jaws that close in to grab an object from around its perimeter. This makes it the closest visual and functional match to a drill chuck.

Suction grippers rely on vacuum and don’t mimic a jawed grip. Pincer grippers resemble tweezers or a two-pronged bite, which is different from a multi-jaw clamping action. Locking grippers secure something with a latch or a one-piece jaw mechanism rather than the converging jaws of a chuck.