Forming die of permanent magnet ring and control method of forming die

Abstract

The invention provides a forming die of a permanent magnet ring and a control method of the forming die. The forming die comprises a core, a magnetic steel sleeve arranged outside the core in a sleeving mode, and magnetic steel assembled on the magnetic steel sleeve; a plurality of mutually parallel and independent mounting holes are formed in the core in the axial direction; each mounting hole isinternally provided with a heating rod which can be independently controlled; the heating rods are externally connected with a power supply; the magnetic steel sleeve comprises a first side wall, a plurality of baffles extending outwards from the radial direction of the first side wall and a second side wall connected with the tail ends of the baffles; a hollow part is defined between the first side wall and the second side wall; the hollow part is uniformly divided into a plurality of magnetic cavities by the baffles; each magnetic cavity is internally provided with the magnetic steel; and the polarities of every two pieces of adjacent magnetic steel are opposite. According to the control method, the orientation uniformity of the permanent magnet ring is realized by controlling the temperatures of the heating rods, so that the orientation deviation is reduced, and finally high symmetry of the permanent magnet ring is realized. According to the forming die of the permanent magnet ring, the permanent magnet ring is alternately magnetized and oriented oppositely, so that complete ordered orientation is realized.

Description

technical field [0001] The invention relates to the technical field of permanent magnet molding dies, in particular to a permanent magnet ring molding die and a control method thereof. Background technique [0002] As we all know, in the prior art, the press forming of permanent magnets is generally divided into two types: oriented press forming and non-oriented press forming. The specific forming method depends first on the performance of the material itself and on the capability of the permanent magnet forming device. . At present, the method of forming the permanent magnet by orientation pressing is generally to apply the pressure that can form the permanent magnet alloy powder while the electromagnet is magnetizing the permanent magnet alloy powder, so that the performance of the obtained permanent magnet is much higher than that of no Oriented permanent magnet properties. [0003] In the actual process, the multi-pole oriented permanent magnet ring is spliced ​​by mul...

Images