Electro-permanent magnetic chucks only require electrical power to turn the magnetic holding force magnetic chuck on and off. This means the chuck runs cold thereby minimizing heat build-up, parts distortion and power consumption.
 

Heat buildup during machining processes can produce undesirable effects such as an increase in rejected parts and rework due to thermal parts distortion, as well as an increase in scrap. This all adds up to an increase in cycle time and material costs and a decrease in tool life. Electro-permanent magnetic chucks have the ability to counter these undesirable effects in two ways. They run de-energized or cold so they do not add into the total heat pattern of the workpiece. Like all magnetic chucks, they fully hold the workpiece from centerline to outside edge. This feature reduces chatter and vibrations.
 

There are three basic types of magnetic chucks: permanent magnetic, electro-magnetic and electro-permanent. The permanent magnetic chuck is based on the magnetism created by permanent magnets and do not require electrical power to operate, which makes them failsafe, but they do not have a variable holding power capability. Electromagnetic chucks use a controller to generate a D.C. voltage in a coil wound around the chuck's pole pieces to create the magnetic work holding force. The D.C. chuck controller provides a means to vary the chuck's magnetic holding force. But electro-magnetic chucks require continuous electrical power to operate. Electro-permanent magnetic chucks combine features of both permanent magnetic and electro-magnetic chucks.
 

Electro-permanent magnetic chucks undoubtedly are a hybrid from the long-term and electromagnetic chuck types. They are made using a coil wound near to long-term magnetic product embedded from the chuck plate. When a DC voltage is applied, the magnetic product is charged, which requires about one second, and binds the workpiece toward chuck even shortly after energy is removed. one more purpose from the coil will be to deal with the quantity of magnetic force from the chuck to provide it a variable holding energy ability comparable to electromagnetic chucks. energy is required is de-energize the magnetic field.

These chucks will stay magnetic even when energy is removed. This offers them equally a failsafe advantage much more than electromagnetic chucks and eliminates the accidental discharge of run piece. thinking about which they sustain their magnetic holding force with out the intake of electrical power, these chucks boost the vitality ability from the process, which minimizes costs toward whole enterprise. They could be employed with surface area grinders, electrical digesting appliance tools, moreover to in casting, drilling, preparing and uninteresting machines. they are able to create adequate holding force for heavy cuts and thrusts all through grinding, preparing and milling operations.

Minimizing factors Distortion

By not needing constant electrical energy to sustain their run holding force, the chucks run cooler, which minimizes heat build-up and mechanised distortion from the chuck and run piece. because of the uniform holding power, these chucks create much less chatter and system wear.

Off-Machine Pallet Loading

Since electro-permanent magnetic chucks could be disconnected from electrical energy the instant they are charged, they are portable. This element allows them for getting decent candidates for off-machine pallet loading and tombstone applications.