Title:
【発明の名称】ピンホール付きシャフトの加工方法
Document Type and Number:
Japanese Patent JP2883598
Kind Code:
B1
Abstract:
PCT No. PCT/JP98/04754 Sec. 371 Date May 26, 1999 Sec. 102(e) Date May 26, 1999 PCT Filed Oct. 21, 1998 PCT Pub. No. WO99/20416 PCT Pub. Date Apr. 29, 1999A method of manufacturing a shaft having below a surface thereof a flow passage, through which a fluid can flow, includes a preliminary step of forming in a surface of a columnar-shaped base material grooves having a substantially U-shaped cross section, and a finishing step of compressing crests of thread ridges between the adjacent thread grooves in a direction, in which the base material is reduced in diameter, to perform plastic deformation and join the deformed crests to one another to form a spiral-shaped, closed space which communicates the spaces in the thread grooves.
Inventors:
Keigo Kato
Mizuno Masataka
Mizuno Masataka
Application Number:
JP28957797A
Publication Date:
April 19, 1999
Filing Date:
October 22, 1997
Export Citation:
Assignee:
Aoyama Manufacturing Co., Ltd.
International Classes:
B21H1/00; B21C37/20; B21H3/02; B21H7/18; B21K1/12; B23P15/00; B21H3/06; (IPC1-7): B21H7/18; B21H1/00; B21H3/02; B21K1/12
Domestic Patent References:
| JP63281732A | ||||
| JP63281733A | ||||
| JP635835A |
Attorney, Agent or Firm:
Akio Najima (2 others)
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