Goudsmit Magnetics has recently unveiled its improved magnetic gripper as an efficient alternative to traditional robotic grippers.
The ultralight enhanced magnetic grippers are fitted with strong permanent neodymium magnets, providing additional safety. The handling magnets can be switched on and off by means of compressed air and have a tapped hole interface for attachment to a robot arm, optionally in combination with a spring plunger.
These grippers can be used for the automated pick-up, placement or positioning of steel or other ferromagnetic objects. They can also remove sheet metal from presses, destack products from boxes (bin picking), assemble steel parts or handle punched steel parts, blanks and perforated steel sheets in robotic applications.
This easily installable system is already being used by a number of large car manufacturers and in the sheet metal industry.
The use of a magnetic gripper on robot arms replaces the traditional vacuum technique. A disadvantage of vacuum grippers is that they are susceptible to malfunction and subject to wear. Vacuum grippers also have suction cups that must be positioned correctly, because if they are even partially over a hole in the metal sheet they will not grip at all.
The electromagnets used by other manufacturers are not a good solution for this problem, because they are so heavy that they reduce the lifting capacity; a magnetic griper with permanent magnets is considerably lighter. Moreover, the gripper does not wear and has a longer service life than vacuum grippers.