Metal deforming – With use of control means energized in response to activator... – Sensing tool or tool-linked part
Patent
1977-05-17
1978-11-28
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Sensing tool or tool-linked part
100 48, B21J 920
Patent
active
041270193
ABSTRACT:
The present invention relates to hydraulic crosshead control systems and may be most advantageously used in free forging hydraulic presses. The system comprises a valve-type hydraulic distributor and a mechanical feedback system which includes two rotatable members mounted on a drive shaft, one member being mounted for progressive movement relative to the shaft by the amount directly proportional to the angle of rotation thereof, and the other member is rigidly secured to the shaft.
The hydraulic distributor drive has a member picking-up a feedback signal which is incorporated in the drive in such a manner as to prevent the signal from being transmitted to the manual control handle. The system according to the invention is simple in structure and reliable in operation.
REFERENCES:
patent: 2962960 (1960-12-01), Salter
patent: 3044389 (1962-07-01), Rexford
patent: 3138976 (1964-06-01), Robra
patent: 3196647 (1965-07-01), Schneider
Chekmenev Viktor I.
Khirdzhiev Sergei G.
Koires Vladimir I.
Vasilkovsky Vitaly P.
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