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Title:
METHOD FOR MANUFACTURING SHAFT WITH OUTER-PERIPHERY WORKED
Document Type and Number:
Japanese Patent JP2010125478
Kind Code:
A
Abstract:

To provide a method of producing no burrs at both ends of a worked part so as not to require a work of removing burrs.

A plurality of demarcated shaft parts 3, 4, 5 are formed on a shaft 1 by juxtaposing a plurality of outer-periphery grooves 2 in the axial direction. Worked parts 7 are formed, by roll-forming, on the outer-peripheries of the demarcated shaft parts 3, 4, 5 that are the outer-periphery of a shaft 6 having each of demarcated shaft parts 3, 4, 5, but excludes each of outer-periphery grooves 2. A shaft 8 having worked parts 7 is cut off at each of outer-periphery grooves 2, so that the shaft 8 is divided for every demarcated shaft parts 3, 4, 5 that have worked parts 7. Through-holes are formed through the divided demarcated shaft parts 3, 4 in the axial direction.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
HAYASHI TETSUO
Application Number:
JP2008301264A
Publication Date:
June 10, 2010
Filing Date:
November 26, 2008
Export Citation:
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Assignee:
NIKKO SEIKI KK
International Classes:
B21H1/00; B21H3/02; B21H5/00; F16B35/00; F16H25/20; F16H55/17
Domestic Patent References:
JP2006346684A2006-12-28
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda