Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SHAFT FOR DYNAMIC BEARING, DYNAMIC BEARING, AND METHOD FOR PRODUCING THE SHAFT
Document Type and Number:
WIPO Patent Application WO/2004/070219
Kind Code:
A1
Abstract:
In a method for producing a shaft (2) for a dynamic bearing, relative vibration between a bar-like material (5) that is to be processed to the shaft (2) for a dynamic bearing and a grinding stone (processing tool)(11) for processing an outer peripheral surface (5a) of the material (5) is controlled. This causes grooves (2b) to be arranged side by side in a circumferential direction of the outer peripheral surface (5a). In the shaft (2), the grooves (2b) and outer peripheral surfaces (2a) have uniform surface roughness, and the processed patterns are aligned in the circumferential direction.

Inventors:
FURUTA EIJIRO (JP)
KAYAMA KENJI (JP)
MASUDA MICHIYA (JP)
Application Number:
PCT/JP2004/001130
Publication Date:
August 19, 2004
Filing Date:
February 04, 2004
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NHK SPRING CO LTD (JP)
FURUTA EIJIRO (JP)
KAYAMA KENJI (JP)
MASUDA MICHIYA (JP)
International Classes:
B24B5/22; B24B19/02; F16C3/02; F16C17/02; F16C33/10; F16C33/14; (IPC1-7): F16C17/02; F16C33/20; B24B5/22
Foreign References:
JPH1043906A1998-02-17
JPH07145812A1995-06-06
JPH07259837A1995-10-09
JPH112234A1999-01-06
JPH09144749A1997-06-03
Other References:
See also references of EP 1591678A4
Attorney, Agent or Firm:
Suzuye, Takehiko c/o SUZUYE & SUZUYE (7-2 Kasumigaseki 3-chom, Chiyoda-ku Tokyo 13, JP)
Download PDF: