Press-forming machine

Details Press-forming machine Press-forming machine

2006-12-26

2006-12-26

Larson, Lowell A. (Department: 3725)

Metal deforming

With use of control means energized in response to activator...

Including plural sensors or sensor responsive to comparison...

C072S389500, C100S046000

Reexamination Certificate

active

07152444

ABSTRACT:
A press forming machine comprising driving shafts for pressing three or more respective pressure points and displacement measuring means for measuring a displacement close to the pressure point. A central driving shaft among the driving shafts has a gap (the slack) larger than those of other driving shafts between each of the driving shafts and a pressure plate. During press formation at a trial stage, a positional displacement close to each pressure point is measured by the displacement measuring means and control data is supplied to each driving source for driving a driving shaft to drive the pressure plate. Then, production press-formation is performed in accordance with the above result. Therefore, the central driving source can avoid overload by the slack of the driving shaft with the pressure plate.

REFERENCES:
patent: 5243902 (1993-09-01), Plazenet
patent: 6595122 (2003-07-01), Mukai et al.
patent: 2002/0170337 (2002-11-01), Futamura et al.
patent: 1 240 999 (2002-09-01), None
patent: 53-080868 (1978-07-01), None
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patent: 7-21299 (1995-04-01), None
patent: 2002-263900 (2002-09-01), None

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