PRESS FORMING METHOD - INST TECH PRECISION ELECT

Title:

PRESS FORMING METHOD

Document Type and Number:

WIPO Patent Application WO/2004/037530

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 servomotor drive sources. In trial forming, the slide plate is sufficiently slowly moved to measure the delay of each drive source. According to the magnitude of the delay of each drive source or according to the difference between the trial forming speed and the production forming speed, the respective speeds of the drive sources are corrected, and trail forming is repeated on the basis of the corrected speed to derive conditions that enable press forming at high forming speed suitable for mass production while maintaining the horizontal state of the slide plate to the extent of ensuring sufficient product accuracy.

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Inventors:

FUTAMURA SHOJI (JP)
UNNO KEIZO (JP)

Application Number:

PCT/JP2003/012939

Publication Date:

May 06, 2004

Filing Date:

October 09, 2003

Export Citation:

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Assignee:

INST TECH PRECISION ELECT (JP)
FUTAMURA SHOJI (JP)
UNNO KEIZO (JP)

International Classes:

B30B1/18; B30B15/14; B30B15/20; B30B15/24; (IPC1-7): B30B15/14; B30B15/24

Foreign References:

EP1240999A1	2002-09-18
JP2000079500A	2000-03-21
JPH10277791A	1998-10-20
JP2000015341A	2000-01-18

Other References: