Method of manufacturing stator core and the stator core
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United States of America Patent
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May 23, 2017
Grant Date -
Apr 3, 2014
app pub date -
Aug 26, 2013
filing date -
Feb 25, 2011
priority date (Note) -
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Abstract
A method of manufacturing a stator core includes die-cutting iron core materials from a band-shaped magnetic steel sheet and stacking the materials. Each material includes an inner circumference formed with three interconnecting lugs. At least one of the lugs included in one of two rows is located between the materials lengthwise adjacent to each other in the other row. Marginal regions are located in parts of the sheet located between the lugs of the materials adjacent to each other in a lengthwise direction of the sheet in a common row, between the material of the one row and the material of the other row and between the materials to be die-cut and each end of the sheet, respectively. The marginal regions are sized to be approximate to a web width in order to join remaining materials after the materials have been die-cut.
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