OPERATING PRINCIPLE
Clamping pliers are used to manipulate, hold and tighten parts depending on the application. They operate using compressed air to actuate the gripping fingers. There are models with single or double action. The opening and closing of a double action clamp is conditioned by the arrival of compressed air, while a single action clamp is equipped with a spring that allows the gripping fingers to return to their initial position, fingers open.
All of our NOV series clamps can be equipped with a magnetic sensor for detection (part take-up).
SELECTION CRITERIA
In order to choose the appropriate gripper for the relevant application, it is necessary to know and take into account various factors.
The choice of gripper depends on:
- the mass and shape of the piece to be handled
- the direction of movement
- acceleration
- angular velocity
- the distance between the center of gravity and the center of pressure
- the coefficient of friction
The number of fingers on the gripper, the width of the gripping finger, and the gripping force of each finger are also factors to consider when choosing the gripper.
TO KNOW
- The gripping fingers should be as light and short as possible, depending on the part to be handled, in order to be effective. The longer the gripping fingers, the less force is exerted.
- It should also be noted that the clamping force should be 10 to 50 times greater than the weight of the part.
Here the 3-finger gripper is directly mounted on an articulated arm (robot) for grasping machined parts,
while the angular gripper is mounted on a gripping hand.
