Stroke control for press

Details Stroke control for press Stroke control for press

1982-06-03

1985-08-13

Meister, James M.

Cutting

With means to monitor and control operation

Including means to correct the sensed operation

83525, 83530, 100258R, B26D 500

Patent

active

045342490

ABSTRACT:
A method and apparatus for controlling the stroke of a press in which the movements of two portions of a movable platen of the press are continuously sensed during a stroke. A signal is generated whose magnitude at any time during a stroke is dependent on the sum of the distances moved by the two portions of the movable platen during the stroke. The signal is compared with a preselected value which is selected in accordance with the length of the stroke required and the stroke is terminated when the magnitude of the signal equals the preselected value.

REFERENCES:
patent: 2821670 (1958-01-01), Bradley
patent: 3046874 (1962-07-01), Dehn
patent: 3153965 (1964-10-01), Muhlbach
patent: 4154130 (1979-05-01), Smith et al.
patent: 4157066 (1979-06-01), Pretty
patent: 4356763 (1982-11-01), Hagstrom

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