Title:
METHOD FOR MANUFACTURING A BALL JOINT
Document Type and Number:
WIPO Patent Application WO/1998/055774
Kind Code:
A1
Abstract:
A method for manufacturing a ball joint in which a ball (8) acting as the centre of swivelling of a link mechanism and a holder embracing the ball are swivellingly or rotatably connected to each other, the method comprising a first step of casting molten aluminum alloy into a casting mold in which a ball (8) is inserted as a core so as to cast therefrom a holder (2) covering the ball (8) with a portion to which a shank (1b) is joined uncovered, a second step of heating the holder (2) to melt the aluminum alloy forming the holder (2), a third step of press contacting the shank (1b) against the ball (8) exposed from the holder (2), bringing electrodes (10a, 10b) into abutment with the shank (1b) and the holder (2), respectively, and causing a welding current to flow between the electrodes so as to projection weld the ball (8) and the shank (1b), thereby forming a shank with a ball, and a fourth step of applying an external force to the holder (2) or the shank with a ball so as to form a gap between the ball (8) and the holder (2).
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Inventors:
TAKAHASHI KUNIHISA (JP)
YUKI NOBORU (JP)
MAKI NOBUYUKI (JP)
SUGA YOSHIKAZU (JP)
YUKI NOBORU (JP)
MAKI NOBUYUKI (JP)
SUGA YOSHIKAZU (JP)
Application Number:
PCT/JP1997/001930
Publication Date:
December 10, 1998
Filing Date:
June 06, 1997
Export Citation:
Assignee:
THK CO LTD (JP)
TAKAHASHI KUNIHISA (JP)
YUKI NOBORU (JP)
MAKI NOBUYUKI (JP)
SUGA YOSHIKAZU (JP)
TAKAHASHI KUNIHISA (JP)
YUKI NOBORU (JP)
MAKI NOBUYUKI (JP)
SUGA YOSHIKAZU (JP)
International Classes:
F16C11/06; B22D19/00; B22D19/12; B23K11/00; B23K11/14; B23P15/00; (IPC1-7): F16C11/06
Foreign References:
| JPS4711002B1 | 1972-04-04 | |||
| JPS538861B2 | 1978-04-01 | |||
| JPS5364976U | 1978-05-31 | |||
| JPS5312655B1 | 1978-05-02 | |||
| JPS529272B2 | 1977-03-15 | |||
| JPS57129962A | 1982-08-12 | |||
| JPS6218768B2 | 1987-04-24 | |||
| JPS577385A | 1982-01-14 | |||
| JPS58173075A | 1983-10-11 | |||
| JP5077886B2 | 2012-11-21 | |||
| JP5086484B2 | 2012-11-28 | |||
| JPH09189322A | 1997-07-22 | |||
| JPH0577886A | 1993-03-30 |
Other References:
See also references of EP 0916858A4
Attorney, Agent or Firm:
Naruse, Katsuo (5th floor 11-5, Nishi-shinbashi 2-chom, Minato-ku Tokyo 105, JP)
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