Method of manufacturing rotor core of electric rotating machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 7, 2016
Grant Date -
Sep 6, 2012
app pub date -
Mar 1, 2012
filing date -
Mar 2, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The method of manufacturing a rotor core of an electric rotating machine includes a preliminary shaping step of forming a boss section having a cylindrical portion extending in an axial direction, a disk section extending from one end portion of the boss section in a radical direction and preliminary shape portions of claw sections extending from a periphery of the disk section in the axial direction, a boring step of forming an axial hole extending through the boss section in the axial direction, an ironing step of forming the claw sections, and a sizing step to achieve a necessary thickness and flatness of the boss section. The ironing step is performed with a mandrel having an interference with the axial hole smaller than a boring punch being inserted into the axial hole after completion of the boring step.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully