Apparatus for forming holes in the flanges of structural members

Details Apparatus for forming holes in the flanges of structural members Apparatus for forming holes in the flanges of structural members

1976-12-01

1977-12-06

Meister, J. M.

Cutting

Operation controlled by detector means responsive to work

Positioning of tool controlled

83560, 408 13, B26F 102

Patent

active

040610640

ABSTRACT:
Punch presses are positioned for punching holes at selected vertical locations in the flanges of I-beams, angle irons and channels by apparatus which utilizes a movable probe to determine the initial position of the presses and which further utilizes a reversible counter and a comparator to stop the presses after they have moved a selected distance from their initial position.

REFERENCES:
patent: 3817135 (1974-06-01), Valente
patent: 3892154 (1975-07-01), Duffy
patent: 3919907 (1975-11-01), Kindgren

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