Which type of gripper is the most commonly used in industry due to being inexpensive?

The correct answer highlights the parallel gripper as the most commonly used type in industry due to its cost-effectiveness. Parallel grippers are favored for a variety of applications because they can effectively grasp objects of different shapes and sizes while maintaining a simple design. Their ability to open and close in a parallel motion allows for a reliable grip, making them versatile for tasks such as pick-and-place operations.

In industrial settings, the balance between functionality and cost is crucial. The parallel gripper provides this balance, as it is generally less expensive to manufacture and maintain compared to more complex alternatives. Additionally, the straightforward design leads to increased reliability and reduced downtime, which is an essential factor in maintaining efficiency on production floors.

Other types of grippers, such as curvilinear, magnetic, and vacuum grippers, serve specific applications and may require more specialized setups or maintenance, which can increase their overall cost and reduce flexibility in different scenarios. Thus, while they all have their use cases, the parallel gripper stands out for its economical advantages combined with broad applicability.