Production method of the radial anisotropic magnet and the permanent magnet motor and the possession iron core permanent magnet motor which use the radial anisotropic magnet

摘要

Form corresponding power of the radial anisotropic magnet is raised, the largest nerugi product (BH) in order to improve the quiet sound characteristic and controllability of the possession iron core permanent magnet type motor which accompanies the improvement of _max, the magnetic anisotropy for the tangential line of the magnet by the fact that the magnet powder is locked in mesh condition (C axis) angle is kept, production method of the radial anisotropic magnet which is made specified circular arc condition, or annulation with the deformation which at the same time accompanies flow is offered. Especially, deformability of the magnet it improves by the fact that the deformation which accompanies viscous flow or expansion flow is done, the form corresponding power for thickness it improves. In addition, C degree of axial angle for tangential line direction without dividing pole into the segment, kogingutoruku is decreased by the fact that it controls with optional position and optional angle.