Evaluating Machining Applications For Magnetic Chuck Workholding

There many different things to consider when picking the kind of magnetic chuck to get a machining application.

As an alternative to mechanical clamping of work-pieces, magnetic chucks are excellent for holding ferromagnetic work-pieces collectively. They are commonly made use of 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 make contact with with electromagnets or permanent magnets. find out more The work-piece to become held closes the magnetic loop or path, onto those fixed plates, giving a safe anchor for the work-piece.

To reap the positive aspects, quite a few variables must be viewed as to appropriately marry the magnetic chuck for the application.

Magnetic Chuck Application Considerations

There a number of components that have to be deemed, such as:

Sort of Material: Magnetic chucks only work with supplies which have an ability to be magnetized. Paramagnetic or diamagnetic supplies don't magnetize effectively if at all and are usually not good candidates for magnetic chuck workholding. Material hardness, shape and flatness with the work-piece material are also a part of the material evaluation approach.

Type of Machining: Machines and kind of machining are important considerations for the collection of a magnetic chuck. Things for example the horsepower, spindle speed, and size of cutter or tool have to be deemed.

Surface Region: Magnetic holding force is straight proportional for the surface location. Smaller parts that have less readily available get in touch with area may well demand optimistic stops to overcome the forces of your machine. Irregularly shaped components could need a magnetic fixture to securely hold the work-piece.

Chip Manage: Chips are normally not a problem for magnetic workholding because the chuck's magnetic field doesn't lead to chips to adhere towards the work-piece. Having said that, if chip difficulties happen, they can be alleviated by utilizing variable manage solutions to lower the amount of force applied or by utilizing riser blocks to maintain the magnetic circuit away from the machining area. In other words, the chuck is often created to limit the depth from the magnetic field, stopping the force from pulling chips into the work-piece.

Variety of Magnet: You'll find 3 types of magnetic circuits employed with magnetic chucks: permanent-magnetic, electromagnetic and electro-permanent. Permanent-magnetic chucks are mechanically actuated by way of a lever and have a non-variable clamping force. Electromagnetic chucks use DC voltage inside a coil surrounding mild-steel pole pieces to produce the magnetic field; they need constant power application. However they can offer variable holding energy, which greatly improves their capability to assistance a wide selection of machining situations. Electro-permanent chucks are a permanent/electromagnet hybrid. Within this design and style, when DC voltage is applied towards the coil that surrounds the permanent magnet, the material is charged and becomes magnetic. Electro-permanent magnets will not shed magnetic attraction if there is a energy loss, which tends to make them portable.