Coded automatic counterbalance control

Details Coded automatic counterbalance control Coded automatic counterbalance control

1979-07-16

1981-08-18

Larson, Lowell A.

Metal deforming

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

Metal deforming by use of roller or roller-like tool element

72445, 100259, B21J 920

Patent

active

042839297

ABSTRACT:
A counterbalance cylinder pressure control for a mechanical press which has a slide, a die punch mounted on the slide and a die shoe. A coded plug is attached to the die shoe and means are provided for reading the code on the plug which indicates the weight of the die punch associated with that die shoe. A voltage signal produced from the decoding of the plug is used in a servo system to control the air pressure in the counterbalance cylinders. When a new die set is placed in the mechanical press, the coded plug attached to the die shoe is read and the servo system operates to reset the counterbalance cylinder pressure to the correct value.

REFERENCES:
patent: 3115086 (1963-12-01), Stimmel
patent: 4011809 (1977-03-01), Waller et al.
patent: 4013002 (1977-03-01), Schneider et al.
patent: 4069697 (1978-01-01), Morrison et al.

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