What is the basic operating principle of a gripper?
Compressed air is supplied to the cylinder of the gripper body forcing the piston up and down, which through a mechanical linkage, forces the gripper jaws open and closed.
There are 3 primary motions of the gripper jaws; parallel, angular and toggle. These operating principals refer to the motion of the gripper jaws in relation to the gripper body.
The gripper jaws move in a parallel motion in relation to the gripper body. Used in a majority of applications, parallel grippers are typically more accurate than other style grippers.
The gripper jaws are opened and closed around a central pivot point, moving in a sweeping or arcing motion. Angular grippers are often used when limited space is available or when the jaws need to move up and out of the way.
The pivot point jaw movement acts as an over-center toggle lock, providing a high grip force to weight ratio. This mechanism will remain locked even if air pressure is lost.