Neodymium magnets, commonly known as NdFeB magnets, are a kind of high performance rare earth permanent magnet which constructed from an alloy of Neodymium, Boron, and Iron. Sintered Neodymium magnet is available in a wide range shape and dimension. A Neodymium countersunk magnet is a functional type of magnet ring with one end surface show as a standard ring, but the other end surface has an angled countersunk hole. It is normally measured by the outer diameter, through hole diameter, major diameter, depth, and angle. The angle generally being 90 degrees. Its countersunk hole provides a convenient way to fix the magnets onto both magnetic and non-magnetic surface securely using a matching standard countersunk screw. Almost entirely of Neodymium countersunk magnets are magnetized along its axial axis. In addition, countersunk hole is also available in Neodymium block magnet and Neodymium arc magnet.
Machining Process of Neodymium Countersunk Magnet
Besides large-sized product with regular shapes, sintered Neodymium magnet is hard to achieve the required shape and dimensions directly owing to the technical restrictions in the magnetic field orientation molding process, therefore, machining process of sintered Neodymium magnet blank is always inevitable, especially Neodymium countersunk magnet. As a type of hard and brittle cermet material, sintered Neodymium magnet is criticized by its machinability, hence there are only cutting, grinding, and drilling can be applied to its machining process in traditional machining technology. Hole Machining process includes both through hole and countersunk hole. Countersunk hole should be processed on the basis of through hole. In order to ensure concentricity between through hole and the countersunk hole, workpiece is required to be fixed accurately during the machining process of the countersunk hole.
