System and method for the in press adjustment of workpiece holdi

Details System and method for the in press adjustment of workpiece holdi System and method for the in press adjustment of workpiece holdi

1984-08-07

1986-06-03

Husar, Francis S.

Metal deforming

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

Including plural sensors or sensor responsive to comparison...

72 19, 72352, 72417, B21D 2200

Patent

active

045922209

ABSTRACT:
A system for the automatic adjustment of the pressure pad holding force in accordance with the thickness of the workpiece and the forming tool stroke includes a force transducer and a displacement transducer. The force transducer is used to monitor the force between the pressure pad and the workpiece. The output of the displacement transducer is continually read as the part is being formed. The workpiece thickness and forming tool stroke are used to calculate the optimum holding force. The pressure of a fluid system is adjusted to change the holding force to the optimum value.

REFERENCES:
patent: 3453848 (1969-07-01), Williamson
patent: 3817076 (1974-06-01), Wallace
patent: 4056965 (1977-11-01), Heiser
patent: 4121449 (1978-10-01), Celi
patent: 4125009 (1978-11-01), Byrd
patent: 4306436 (1981-12-01), Schulz et al.
patent: 4408471 (1983-10-01), Gossard
patent: 4470287 (1984-09-01), Antonov et al.

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