MAGNETIZATION METHOD OF MULTIPOLE ANISOTROPIC TUBULAR PERMANENT MAGNET AND MAGNETIZATION DEVICE

摘要

PURPOSE: To improve and stabilize magnetization direction accuracy by temporarily magnetizing a magnetization object in an upper temporary magnetization chamber, by lowering it along a central axis of an entire while damping rotation movement involved in positioning and by fixing the positioned magnetization object while improving friction force with a bottom board when it touches down the bottom board of a magnetizing device. ;CONSTITUTION: Discs 6, 7 are attached up and down a magnetizing object 3 outside a device. The object 3 is made to lower and pass inside a temporary magnetizing device slowly along an axis 8. In the process, a pair of permanent magnets 2 arranged inside a positioning yoke 1 are accurately positioned since each thereof attracts a polar anisotropic part of the magnetizing object 3 and makes the magnetizing object 3 slightly rotate around the central axis 8. Then, the magnetizing object 3 is lowered and moved. A contact part between a lower disc 7 and a magnetizing device inside bottom 9 is shaped to prevent moving as much as possible when it is pressed while generating large friction in rotation movement in circumferential direction, and is firmly fixed. After fixed, it is magnetized. Thereby, total magnetic flux of a magnet can be improved.;COPYRIGHT: (C)1994,JPO&Japio