Control for automatically programmed variable pump output pressu

Details Control for automatically programmed variable pump output pressu Control for automatically programmed variable pump output pressu

1992-12-15

1995-02-21

Seidel, Richard K.

Cutting

With control means responsive to replaceable or selectable...

83 769, 836391, 72 7, 100269R, B26D 512, B30B 1516

Patent

active

053905741

ABSTRACT:
A punch press having automated punching programs executed by a hydraulic cylinder operating a punch ram, in which a pump used to generate hydraulic pressure for a ram cylinder is adjusted to an output corresponding to a calculation of the minimum pump pressure required to completely execute the program. The workpiece material and tool characteristic data is contained in data storage tables and utilized in calculating the minimum pressure required.

REFERENCES:
patent: 4116122 (1978-09-01), Linder et al.
patent: 5031431 (1991-07-01), Naito

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