By energizing the internal coil to generate magnetic force, it passes through the magnetically conductive panel and closely attracts the workpiece touching the surface of the panel. By the principle that the coil is deenergized, the magnetic force disappears and the workpiece is removed, the machine tool accessory products are produced.
Electromagnetic suction cups are different because of different design methods or materials, and are constantly developing and improving. At first, electromagnetic sucker was used to fix the ground workpiece instead of the splint and bolt on the grinder. This kind of electromagnetic sucker is relatively simple and can only fix flat workpieces.
Extended data:
The magnetic field lines are evenly distributed on the surface of the disk, so the electromagnetic attraction will not be concentrated, and the magnetic force per unit area is small; The direction of magnetic force is perpendicular to the surface of the sucker, which is not easy to change, and only one magnetic force can be generated for the workpiece with the same adsorption area; The acting point of magnetic force on the workpiece is limited to the contact surface between the workpiece and the suction cup and cannot be changed at will.
There are some shortcomings in machining, such as low positioning accuracy, small clamping force, narrow application range and low production efficiency. The adsorption force of that electrically control strong sucker doe not need to be maintained by switching on the pow supply, and continuous work does not generate heat, thus avoiding the workpiece from being deformed by heating; meanwhile, even if the workpiece exceeds the table top, the strong and uniform disk surface suction force ensures the highest machining accuracy.
However, the magnetic force of ordinary electromagnetic chuck needs to supply current continuously, and after running for a period of time, it generates heat, which not only causes the workpiece to be deformed by heat, but also reduces the magnetic force of the chuck and cannot guarantee the machining accuracy.
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