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Home » Schunk Offers Electrically Activated Magnetic Gripper

Schunk Offers Electrically Activated Magnetic Gripper

July 14, 2021
When it comes to automated loading and unloading of machine tools, as well as handling of ferromagnetic raw materials, gripping with magnetic grippers has proven to reduce cycle time and increase production.
 
Schunk has addressed this industry need with the EMH, the world's first electrically activated, 24 V permanent magnetic gripper with integrated electronics.
 
Electro-permanent magnets like the EMH can grip many different parts with no change over, making these end effectors more flexible than other designs. Electro-permanent magnets have high power density and compact size which improves the available payload for the robot to which it is mounted. Operation of electro-permanent magnets is energy efficient by design as the magnet uses power only when switching from active to inactive and does not consume power otherwise.
 
Integrated process monitoring
 
The EMH gripper combines the strengths of magnetic technology with the benefits of 24V technology, creating a compact tool for robotics. The electronics are integrated inside the housing and are actuated easily via the digital I/O. No external control electronics are required, saving costs, minimizing space, and simplifying wiring.
 
In order to improve process reliability, the EMH gives feedback status for active/inactive and part presence sensing with errors signaled via an LED display on the housing. Unlike other magnetic grippers, no maintenance is required keeping downtime to a minimum.
 
Once activated the EMH does not consume energy meaning parts are still gripped even during a power outage or emergency stop. A short pulse of current is only required for switching with time to activate or deactivate the EMH just 300ms.
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