Electro Permanent Magnetic Chuck For Workholding
- Constant & uniform clamping force
- Unlike mechanical clamps and vises, no vibration or chatter
- Allow access to multi-side machining of a workpiece – no need to stop and re-position
- Improved safety – electro permanent magnetic technology guarantees a secure and stable hold of the workpiece even in a power outage
What is Electro Permanent Magnetic Chuck?
An Electro Permanent Magnetic Chuck is a tool made from permanent magnetic materials that utilizes electrical pulses to alter the magnetic field state. It is primarily used for clamping and fixing jobs in various manufacturing, processing, and inspection fields.
The core technology of an electro permanent magnetic chuck is its ability to instantaneously change the polarity of the magnetic field by controlling external current pulses, enabling rapid opening and closing of the chuck, thereby significantly enhancing work efficiency and operational convenience. It is particularly advantageous in situations requiring frequent clamping and releasing of workpieces, especially in processes needing high-precision positioning and high load capacity.
Electro Permanent Magnetic Chuck
By Application
Electro Permanent Magnetic Chuck Feature Box
Electro permanent magnetic chuck for workholding offers secure and efficient clamping for milling, turning, and grinding operations, enhancing productivity and precision.
Handles all types and sizes of ferrous workpieces with adjustable power settings.
Ensures perfect safety during power outages.
Saves up to 95% energy. Only requires electricity for 3 seconds during activation (MAG) and deactivation (DEMAG).
Activates/deactivates magnetism in 1 seconds. Enables 5-side machining in a single clamping with high accuracy. Reduces setup time and enhances productivity.
Modular, rigid, and robust design for durability.
No moving parts, 100% waterproof steel surface. Extends tool life and prevents damage to workpieces.
Electro Permanent Magnetic Chuck Working Principle
An electro permanent magnetic chuck is a device that combines the features of permanent magnets and electromagnets. It’s made up of permanent magnets and electromagnetic coils. Without power, the permanent magnets give the chuck some holding force to keep the workpiece in place.
To clamp or release the workpiece, you energize the electromagnetic coil. When powered, the coil creates a magnetic field that interacts with the permanent magnets. By controlling the current’s direction and strength, you can change the electromagnetic field’s direction and intensity.
If the current makes the electromagnetic field go in the same direction as the permanent magnets, the magnetic force increases, clamping the workpiece tighter. If the current makes the field go in the opposite direction, it cancels out the permanent magnets’ field, reducing the magnetic force and releasing the workpiece.
How Electro Permanent Magnetic Chuck Works?
- Apply an excitation current to the solenoid coil for 0.1 to 0.5 seconds.
- The pole of the AlNiCo magnet is reversed. The neodymium and AlNiCo magnets become monopolar.
- Magnetic lines of force concentrate on the surface of the magnetic poles, clamping workpiece securely.
- Apply another current to the solenoid coil for 0.1 to 0.5 seconds.
- The pole of the AlNiCo magnet is reversed again.
- The neodymium and AlNiCo magnets stop emitting magnetic flux from the surface of the magnet core. This unclamps the workpiece, allowing it to be easily removed.
Yes, by using specially designed floating magnetic blocks, we can adapt to uneven workpiece surfaces and minimize deformation. You can trust our solution for precision machining.
Absolutely, as long as the required holding force is within the specified maximum capacities of the chuck. Even if the workpiece is larger than the chuck area, secure clamping is achievable.
Theoretically, they can achieve up to 16 kg per square centimeter.
For medium- and low-carbon steels, residual magnetism is negligible. High-carbon steels may retain some magnetism, but we can incorporate demagnetization procedures to meet specific requirements.
Our chucks have magnetic poles spaced at 50×50 or 70×70 mm with standard penetration depths of 13 mm and 18 mm, respectively. As long as the workpiece thickness exceeds these depths, there should be no impact on the tools. Even with thinner workpieces, the magnetic field strength is low and unlikely to magnetize the tools. However, extremely thin workpieces might cause debris flow issues leading to tool damage or breakage.
Yes, we can customize chucks based on the specific dimensions and shapes of your workpieces. By providing us with detailed drawings of the mounting surfaces, we can design a tailored solution to meet your manufacturing needs.