Title:
METHOD OF FABRICATING SHAFT FROM METAL PLATE
Document Type and Number:
WIPO Patent Application WO/1998/009749
Kind Code:
A1
Abstract:
A shaft is integrally fabricated from an arbitrary portion of a metal plate, the axis of which is perpendicular to the metal plate. The method comprises a first step of extruding the metal plate (1) forward by press working, and a second step of subjecting a projecting portion, which is formed by the first step, to rearward extrusion with a punch inserted forcibly thereinto so as to expand it longitudinally. A shaft with a sufficient height is fabricated with a high precision.
Inventors:
ISERI MITSUHIRO (JP)
HAYASHIZAKI KAZUAKI (JP)
HINO YUTAKA (JP)
HAYASHIZAKI KAZUAKI (JP)
HINO YUTAKA (JP)
Application Number:
PCT/JP1996/002536
Publication Date:
March 12, 1998
Filing Date:
September 06, 1996
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
ISERI MITSUHIRO (JP)
HAYASHIZAKI KAZUAKI (JP)
HINO YUTAKA (JP)
ISERI MITSUHIRO (JP)
HAYASHIZAKI KAZUAKI (JP)
HINO YUTAKA (JP)
International Classes:
B21C23/03; B21C23/20; B21D22/04; B21D24/00; B21J5/06; B21K1/06; B21K1/12; B21K21/02; (IPC1-7): B21K1/06; B21D22/04; B21J5/06
Foreign References:
| JPS5987946A | 1984-05-21 | |||
| JPS5722841A | 1982-02-05 | |||
| JPS50117674A | 1975-09-13 | |||
| JPH04127930A | 1992-04-28 |
Other References:
See also references of EP 0937522A4
Attorney, Agent or Firm:
Takimoto, Tomoyuki (1006, Oaza Kadom, Kadoma-shi Osaka 571, JP)
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