Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1977-12-05
1979-02-27
Keenan, Michael J.
Metal working
Method of mechanical manufacture
With testing or indicating
72 37, 292815, B21C 5100
Patent
active
041411307
ABSTRACT:
A method and apparatus for centering two concentric cylinders having different diameters is the subject of the present invention. A linear reference line is projected from an illuminating source along the length of the inner cylinder. At the other end of the cylinder is a photo receiver operable to provide a displacement reading related to the amount of light striking the receiver. As the inner cylinder is rotated about its center point, the amount of light striking the photo receiver varies based on the amount of arcuate displacement present at each point of the cylinder. The photo receiver then converts the incoming light into a displacement reading related to the arcuate diplacement of the inner cylinder. The readings thus obtained are correlated with the points on the inner cylinder where they occurred to indicate the point and amount of maximum arcuate displacement. Thereafter, the outer cylinder is arcuately displaced a corresponding amount so that it will conform to the inner cylinder exactly.
REFERENCES:
patent: 2205783 (1940-06-01), Arutunoff
patent: 2864280 (1958-12-01), Keller et al.
patent: 3604940 (1971-09-01), Matthews
patent: 3907435 (1975-09-01), Roodvoets
patent: 3907438 (1975-09-01), Holeman
Reticon LC 600 Digital Line Scan Camera, Reticon Corporation Brochure, 1975.
Bridge John F.
Hart Milburn L.
H. C. Price Co.
Keenan Michael J.
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