Importance

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Abstract

A press operating with hydraulic pressure comprises a pair of relatively movable components (8, 11) which during a pressing operation carry out a relative movement which is sensed. By use of the sensed relative movement a control signal is generated which is used for regulating the hydraulic pressure so that this is caused to vary with the relative movement according to a certain functional relationship. For generating the control signal a manually programmable electrical function generator (23) is provided, preferably a panel (29) comprising plug contacts (34), on which a plurality of pairwise associated pressure and movement values, constituting electrically and visually readable points in the desired functional relationship, can be set up. To the input (28) of the function generator a measurement signal is fed which is a measure of the relative movement covered by the two components and which makes the function generator read off and issue at its output (41-43) the pressure values as the set movement values corresponding thereto are reached.

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First Claim