Posted to News on 18th May 2013, 21:11
Bernoulli gripper transports parts quietly, reliably and quickly
Festo is promoting its OGGB gripper that uses the Bernoulli principle to lift and transport components with smooth, flat surfaces. Typical examples include silicon wafers, solar cells and food packaging. Moreover, the gripper can also be used for porous, perforated or pliable materials such as fabric, metallic mesh and even bubble wrap.
The Bernoulli principle uses high-speed airflow to create a low-pressure zone that generates a force for lifting and transporting workpieces quietly, reliably and quickly. Festo's OGGB gripper is therefore an excellent alternative to suction cups for handling sensitive items or those for which vacuum grippers are unsuitable.
OGGB grippers are available in diameters of 60, 100 or 140mm and all generate a lift of 10N. By controlling the operating pressure, the gripper's vacuum can be adjusted to suit the application requirements. The width of the air gap is determined by the height of inserts that are made from POM, PEEK or stainless steel, against which the workpiece is held while being 'gripped'.
A further advantage offered by the OGGB Bernoulli gripper compared with conventional suction cups is that no dirt (such as the silicon dust produced when a wafer breaks) can enter the system, so there is no need for costly filters.
Follow the link for more information about the OGGB grippers from Festo and to see a short movie that demonstrates it capabilities.
