JP2013135103A5 - - Google Patents

Claims (8)

The magnetic material is magnetically oriented and melted by a step of filling a cylindrical molding space with a bonded magnet composition containing a magnetic material and a resin, and an orientation magnet disposed inside the molding space. A method of producing a cylindrical bonded magnet comprising a step of extruding a bonded magnet composition in the axial direction of the orientation magnet and forming the bonded magnet composition,
The orientation magnet has first permanent magnets having N poles and S poles alternately arranged in the circumferential direction, and N poles and S poles alternately arranged in the circumferential direction. A second permanent magnet disposed adjacent to the first permanent magnet,
Said 1st and 2nd permanent magnet is arrange | positioned so that the same pole may face in the said axial direction, The manufacturing method of the cylindrical bond magnet characterized by the above-mentioned. By arranging a third permanent magnet configured such that N poles and S poles appear alternately in the radial direction toward the outer circumference between the first magnet and the second magnet, the orientation magnet The manufacturing method of the cylindrical bond magnet of Claim 1 which comprises these. 3. The manufacturing of the cylindrical bonded magnet according to claim 1, wherein the magnetization directions of the first and second permanent magnets are inclined in the outer peripheral direction at an angle of not less than 0 degrees and less than 90 degrees with respect to the axial direction. Method. The method for manufacturing a cylindrical bonded magnet according to any one of claims 1 to 3, wherein the magnetic material is an Sm-Fe-N-based magnetic material. A cylindrical molding space filled with a bonded magnet composition containing a magnetic material and a resin, and an orientation magnet disposed inside the molding space for magnetically orienting the magnetic material are melted. A cylindrical bonded magnet manufacturing apparatus for extruding and molding the bonded magnet composition in the axial direction of the orientation magnet,
The orientation magnet is disposed adjacent to the first permanent magnet in the circumferential direction so that N poles and S poles appear alternately in the circumferential direction, and the first permanent magnet. An apparatus for producing a cylindrical bonded magnet, comprising: a second permanent magnet configured such that N and S poles facing each other on the N and S poles of the magnet alternately appear . The 3rd permanent magnet comprised so that a north pole and a south pole may appear alternately in the radial direction which goes to the perimeter may be arranged between the 1st magnet and the 2nd magnet. Manufacturing equipment for cylindrical bonded magnets. The cylindrical bonded magnet according to claim 5 or 6, wherein the magnetization directions of the first and second permanent magnets are inclined in the outer peripheral direction at an angle of 0 degree or more and less than 90 degrees with respect to the axial direction. apparatus. The apparatus for manufacturing a cylindrical bonded magnet according to any one of claims 5 to 7, wherein the magnetic material is an Sm-Fe-N-based magnetic material.