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Title:
BEARING FIXING NUT, STRUCTURE AND METHOD FOR FASTENING THE NUT, AND MAIN SPINDLE DEVICE FOR MACHINE TOOL USING THE SAME
Document Type and Number:
Japanese Patent JP2010196833
Kind Code:
A
Abstract:

To restrain stress concentration by centrifugal force in high speed operation, to reduce noise by a wind roar in the high speed operation, and to restrain deformation, a burr and a return due to fastening, while having a structure for locking a fastening tool on a nut.

At least two surfaces or more of plane parts 51a are formed on an outer peripheral surface of the bearing fixing nut 51 for fixing bearings 60 and 70.


Inventors:
INAGAKI YOSHIFUMI
IWASAKI OSAMU
Application Number:
JP2009043730A
Publication Date:
September 09, 2010
Filing Date:
February 26, 2009
Export Citation:
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Assignee:
NSK LTD
International Classes:
F16B23/00; B23B19/02; F16B37/00; F16C35/063
Domestic Patent References:
JP2002317811A2002-10-31
JP2003314523A2003-11-06
JP2001153122A2001-06-08
JPH09317744A1997-12-09
JP2007211872A2007-08-23
JP2003314523A2003-11-06
JP2002317811A2002-10-31
JP2001153122A2001-06-08
JPS5869115U1983-05-11
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa



 
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