This section provides an overview for magnetic chucks as well as their applications and principles. Also, please take a look at the list of 10 magnetic chuck manufacturers and their company rankings.
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A magnetic chuck is a type of chuck. As the name suggests, a magnetic chuck uses the force of a magnet to hold a workpiece in place. It is used to hold workpieces in place in the field of surface grinding. There are two types of magnetic chuck: an electromagnetic type and a permanent magnetic type, with the permanent magnetic type being called a permanent magnetic chuck. While the electromagnetic chuck uses electric power, the permanent magnetic chuck use permanent magnets, so it has the features of not requiring a power supply and not generating heat.
When grinding, it is very important to fix the workpiece firmly to the machine tool for safe machining. The part used to secure the workpiece to the machine is called a "chuck." A mechanical chuck, such as a threaded clamp, requires work to loosen and tighten screws. In the case of grinding, since ferrous materials are often processed, it is convenient to use a chuck that uses magnetic force, and a magnetized chuck has the advantages of a simple structure, low cost, and high reliability.
If we imagine the actual grinding process, the magnetic chucks must be able to clamp the workpiece firmly when it is to be fixed, and remove it with light force when it is to be removed after the process is finished. The key to the principle of operation that enables these seemingly contradictory functions lies in the magnets and the joint iron (also called a yoke) that make up the chuck. Originally, magnets are rarely used by themselves, but are combined with iron to increase the force of attraction, thereby greatly enhancing the performance of the chuck. This combination of iron is called a yoke.
The yoke has the property of easily collecting the magnetic flux (a bundle of magnetic forces) generated by the magnet. Therefore, when a ferrite is used with a magnet, the magnetic flux does not leak into the atmosphere and forms a magnetic circuit, increasing the adsorption force.
*Including some distributors, etc.
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