Circuit arrangement for an adjusting drive for a press ram adjus

Cutting – Means to drive or to guide tool – Means to change datum plane of tool or tool presser stroke

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Details

83527, 83916, 100257, 173 2, B26D 726, B30B 1514

Patent

active

044818475

ABSTRACT:
A circuit or control arrangement for an adjusting drive of a press ram of a high-speed cutting press which includes top and bottom dies respectively attached to the press ram and a platen of the press with the top die being adapted to dip or penetrate during a cutting process into the bottom die. An arrangement is provided for maintaining the depth of penetration of the upper die means into the lower die means to a constant value in dependence upon an operating condition of the high-speed cutting press. The maintaining arrangement may include at least one limit switch operatively connected with an oscillator stage which provides adjusting signals to the drive motor. In lieu of a limit switch, a cutting force measuring sensor member may be interconnected with an evaluator circuit and the oscillator means so as to control the drive motor.

REFERENCES:
patent: 3162232 (1964-12-01), Munschauer et al.
patent: 3687069 (1972-08-01), Helrigel et al.
patent: 3780814 (1973-12-01), Herb
patent: 4016787 (1977-04-01), Sugimoto
patent: 4033252 (1977-07-01), Baker
patent: 4135446 (1979-01-01), Bareis et al.

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