Title:
PRESS FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2004/037531
Kind Code:
A1
Abstract:
A press forming method is disclosed, wherein press forming can be effected at high speed while maintaining the horizontal state of a slide plate in press-forming work by a press machine. A press machine is used in which the slide plate is pressed by a plurality of drive sources using servomotors for driving. The speed of one of the plurality of drive sources is used as a target speed for production forming, and by using a function that shows the delay in terms of the speed of the drive source and a load thereon and also using a load separately found, the respective speeds of the drive sources are found so as to eliminate the delay between the drive sources. Trial forming is repeated on the basis of the thus-found speed to derive conditions that enable press forming at high speed while maintaining the horizontal state of the slide plate.
Inventors:
FUTAMURA SHOJI (JP)
UNNO KEIZO (JP)
UNNO KEIZO (JP)
Application Number:
PCT/JP2003/012940
Publication Date:
May 06, 2004
Filing Date:
October 09, 2003
Export Citation:
Assignee:
INST TECH PRECISION ELECT (JP)
FUTAMURA SHOJI (JP)
UNNO KEIZO (JP)
FUTAMURA SHOJI (JP)
UNNO KEIZO (JP)
International Classes:
B30B1/18; B30B15/14; B30B15/24; B30B15/20; (IPC1-7): B30B15/14; B30B15/24
Foreign References:
| EP1240999A1 | 2002-09-18 | |||
| JP2000079500A | 2000-03-21 | |||
| JPH10277791A | 1998-10-20 | |||
| JP2000015341A | 2000-01-18 | |||
| EP1240999A1 | 2002-09-18 |
Other References:
See also references of EP 1555117A4
Attorney, Agent or Firm:
Morita, Hiroshi (Sankyo Central Plaza Building 5F 11-8,
Nishi-Nippori 5-chom, Arakawa-ku Tokyo, JP)
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