Title:
PRESS-FORMING MACHINE
Document Type and Number:
WIPO Patent Application WO/2004/091899
Kind Code:
A1
Abstract:
A press-forming machine has drive shafts each pressing each of three or more press points and displacement-measuring means for measuring near each press point the displacement of the press point. Among the drive shafts, the shaft located in the center has a larger gap between itself and a pressing plate than other shafts. During press forming in a trial step, in order to maintain the entire pressing plate at a desired displacement position, positional displacement near each press point is measured by the displacement-measuring means, and control data are supplied to each drive source for driving the drive shafts and drives the pressing plate. After that, final press forming is carried out in accordance with the result of the trial press forming. As a consequence, the gap in the drive shaft prevents a central drive source from being overloaded.
More Like This:
Inventors:
MATSUMOTO TAKEO (JP)
FUTAMURA SHOJI (JP)
FUTAMURA SHOJI (JP)
Application Number:
PCT/JP2004/003968
Publication Date:
October 28, 2004
Filing Date:
March 23, 2004
Export Citation:
Assignee:
INST TECH PRECISION ELECT (JP)
MATSUMOTO TAKEO (JP)
FUTAMURA SHOJI (JP)
MATSUMOTO TAKEO (JP)
FUTAMURA SHOJI (JP)
International Classes:
B30B15/00; B30B1/18; B30B15/06; B30B15/14; B30B15/24; (IPC1-7): B30B15/06; B30B1/18; B30B15/14
Foreign References:
| EP1240999A1 | 2002-09-18 | |||
| JPS5380868A | 1978-07-17 | |||
| JPS57122800U | 1982-07-30 | |||
| JPH0721299U | 1995-04-18 | |||
| JP2002263900A | 2002-09-17 | |||
| EP1240999A1 | 2002-09-18 | |||
| JPS5380868A | 1978-07-17 |
Other References:
See also references of EP 1621329A4
Attorney, Agent or Firm:
Morita, Hiroshi (Sankyo Central Plaza Building 5F 11-8,
Nishi-Nippori 5-chom, Arakawa-ku Tokyo, JP)
Download PDF: