Dynamic gage averaging and length determining device and method

Details Dynamic gage averaging and length determining device and method Dynamic gage averaging and length determining device and method

1977-11-02

1979-07-03

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33141B, 72 9, 242 57, G01B 704, B21B 3702

Patent

active

041595726

ABSTRACT:
Method and apparatus for dynamically determining average gage of continuous sheet material passing about a work roll for subsequent winding or coiling upon a take-up reel. The apparatus includes pulse tachometers for both the work roll, of known diameter, as well as the take-up reel. A comparison of the angular velocity of both the work roll and take-up reel results in a precise velocity ratio for a given period of time. The ratio, when taken in conjunction with the revolutions of the take-up reel, is then used within a digital logic apparatus for determining the change in coil diameter for the given time period, thereby resulting in the average gage of the continuous sheet material wound upon the take-up reel for that given time period. Strip length may also be calculated by the same apparatus.

REFERENCES:
patent: 3553992 (1971-01-01), Harbaugh

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