Method for producing a rotor
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United States of America Patent
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Dec 26, 2017
Issued Date -
N/A
app pub date -
Aug 7, 2015
filing date -
Nov 5, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a method for producing a rotor including a leak prevention hole formed in a rotor core to prevent leakage of magnetic flux from a permanent magnet; an outer-circumferential-side dovetail groove formed in an outer-circumferential-side inner wall of the leak prevention hole, an inner-circumferential-side dovetail groove formed, opposite the outer-circumferential-side dovetail groove, in an inner-circumferential-side inner wall of the leak prevention hole; and a non-magnetic bridge having both end portions engageable with the dovetail grooves, an external force is applied to bring the outer-circumferential-side inner wall close to the inner-circumferential-side inner wall, the non-magnetic bridge is inserted in the dovetail grooves while keeping the rotor core in an elastically deformed state, and, after inserting, the external force is released.
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