As devices that enable robots to pick up and hold objects, grippers have become an important component of most manufacturing processes. When used in conjunction with collaborative robotic industrial robot arms, grippers allow manufacturers to easily automate key functions, including inspection, assembly, machine maintenance, and pick-and-place operations. This article will introduce the different types of grippers used in manufacturing and some of the unique advantages they can offer throughout the process.
Throughout the manufacturing process, grippers are most easily understood as substitutes for human hands. These devices are mounted at the end of robotic arms, typically enabling them to combine the dexterity of a regular hand with the gripping force of a robot. This unique combination of capabilities, when used in conjunction with collaborative robots, unlocks a variety of potential applications—from stacking large boxes to handling small, delicate electronic components.
For many manufacturers, choosing the right gripper can seem like a challenge. Not only are there roughly six different types available, but each type is also usually distinguished by its power source or control method. Unfortunately, without some research, manufacturers may fail to select the appropriate option to meet their unique goals. Some common types of grippers widely used across the manufacturing industry include:
Vacuum Grippers: Vacuum grippers rely on atmospheric pressure and vacuum to lift, move, or hold objects. Typically, this vacuum is generated by a micro-electromechanical pump or a compressed air-driven pump. When operated without interruption, this ensures collaborative robots can securely grip the designated objects.
Pneumatic Grippers: Pneumatic grippers use pistons and compressed air to operate their jaws. In many cases, this type of gripper comes in 2-jaw or 3-jaw configurations. Thanks to their versatility, pneumatic grippers can be used in a wide range of applications.
Hydraulic Grippers: Hydraulic oil powers hydraulic grippers. Given the structure and nature of this type of gripper, it is ideal for heavy-duty applications that require a higher level of gripping force. However, this type of gripper requires extensive maintenance and may not be suitable for medical applications.
Electric Grippers: For collaborative robot applications involving pick-and-place tasks or machine tending, electric grippers are usually highly suitable. While they do not offer the same level of strength as their hydraulic counterparts, electric grippers excel in high-speed applications that require moderate or light gripping force.
When determining the right robotic gripper for a manufacturer, the most important thing to keep in mind is the specifications or role it will play in the process. PFA, Inc. helps streamline this process by working directly with manufacturers to identify their unique needs and provide the products and equipment required to positively impact operations. If you are ready to learn more, we are prepared to help simplify the process!
