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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9613650 B1

PDFFull Text
Date of Patent:
Apr. 04, 2017

Filed:

Sep. 24, 2015

Spindle motor, disk drive apparatus, and method of manufacturing base unit of spindle motor

Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Atsushi Yawata, Kyoto, JP;

Shigeki Horiki, Kyoto, JP;

Ryohei Matsumoto, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Will J Klimowicz

Int. Cl.
CPC ...
G11B 19/20 (2006.01); B23K 26/00 (2014.01); B23K 26/03 (2006.01); B23K 26/351 (2014.01); H02K 15/03 (2006.01); B23K 26/352 (2014.01); B23K 101/34 (2006.01); B23K 101/36 (2006.01); B23K 103/04 (2006.01); B23K 103/10 (2006.01);
U.S. Cl.
CPC ...
G11B 19/2009 (2013.01); B23K 26/0093 (2013.01); B23K 26/03 (2013.01); B23K 26/351 (2015.10); B23K 26/352 (2015.10); H02K 15/03 (2013.01); B23K 2201/34 (2013.01); B23K 2201/36 (2013.01); B23K 2203/04 (2013.01); B23K 2203/10 (2013.01);
Abstract

A method of manufacturing a base unit of a spindle motor includes the steps of: defining a base plate including a support fitting portion; fitting a support to a hole portion passing through the support fitting portion; measuring an inclination of the support fitting portion; calculating a laser irradiation area and a laser irradiation output based on the inclination; irradiating the support fitting portion with a laser beam; and measuring the inclination of the support fitting portion again. The base plate is made of a metal, and is defined by press working, casting, or forging. The support is fitted to the hole portion by crimping, press fitting, or welding. This method reduces the inclination of the support fitting portion, thereby reducing a distortion of the support, which serves as a rotation center of an access portion.

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