Apparatus for manufacturing interior permanent magnet-type inner rotor and manufacturing method using same
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United States of America Patent
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Oct 22, 2019
Grant Date -
Jan 26, 2017
app pub date -
Mar 12, 2015
filing date -
Apr 2, 2014
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Abstract
An apparatus for manufacturing an interior permanent magnet-type inner rotor and manufacturing method using the same. The apparatus including: a mold having a three-layer structure; the method including a shrink fitting step of heating a rotor core having slots; and a filling step of filling the rotor core slots in a residual heat state after the shrink fitting step with a flowable mixture of a binder resin heated to a flowable state and having anisotropic magnet particles, in oriented magnetic fields. This allows, in similar manufacturing steps, an inner rotor of which magnetic poles are anisotropic bond magnets formed by solidifying the flowable mixture in the slots and a conventional inner rotor of which the magnetic poles are sintered magnets. This allows both the inner rotors concurrently and in parallel (mixed flow production) in an already existing IPM motor manufacturing line.
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