There a variety of factors to consider when selecting the type of magnetic chuck for magnetic chuck a machining application.

As an alternative to mechanical clamping of work-pieces, magnetic chucks are ideal for holding ferromagnetic work-pieces together. They are commonly used in grinding, milling, spark erosion and pallet-loading applications.
 

Magnetic chucks consist of an accurately centered permanent magnet face. Fixed pole pieces are brought into contact with electromagnets or permanent magnets. The work-piece to be held closes the magnetic loop or path, onto those fixed plates, providing a secure anchor for the work-piece.
 

To reap the advantages, a number of factors must be considered to properly marry the magnetic chuck to the application.
 

There a variety of factors that need to be considered, including:
 

Type of Material: Magnetic chucks only work with materials that have an ability to be magnetized. Paramagnetic or diamagnetic materials do not magnetize well if at all and are not good candidates for magnetic chuck workholding. Material hardness, shape and flatness of the work-piece material are also part of the material evaluation process.
 

Type of Machining: Machines and type of machining are important considerations for the selection of a magnetic chuck. Factors such as the horsepower, spindle speed, and size of cutter or tool need to be considered.
 

Surface Area: Magnetic holding force is straight proportional in the direction of surface area area. more compact components which have much less readily available get in touch with place may contact for optimistic stops to defeat the forces using the machine. Irregularly shaped components may contact for just about any magnetic fixture to securely preserve the work-piece.

Chip Control: Chips are generally not just a problems for magnetic workholding as a final result of the simple fact the chuck's magnetic area does not final result in chips to adhere in the direction of work-piece. However, if chip troubles occur, they could possibly be alleviated by utilizing variable deal with options to cut back the quantity of force used or by utilizing riser blocks to retain the magnetic circuit apart away from your machining area. In other words, the chuck could possibly be produced to restrict the depth using the magnetic field, stopping the force from pulling chips in to the work-piece.

Type of Magnet: There are three sorts of magnetic circuits used with magnetic chucks: permanent-magnetic, electromagnetic and electro-permanent. Permanent-magnetic chucks are mechanically actuated through a lever and possess a non-variable clamping force. Electromagnetic chucks use DC voltage within a coil surrounding mild-steel pole pieces to produce the magnetic field; they contact for constant energy application. But they are able to provide variable holding power, which significantly improves their ability to support a broad range of machining conditions. Electro-permanent chucks really are a permanent/electromagnet hybrid. on this design, when DC voltage is used in the direction of coil that surrounds the long lasting magnet, the substance is charged and gets magnetic. Electro-permanent magnets will not lose magnetic attraction if there is ordinarily a energy loss, which would make them portable.