Optics: measuring and testing – Of light reflection
Patent
1977-12-22
1980-10-07
Corbin, John K.
Optics: measuring and testing
Of light reflection
250563, 356 73, G01N 2148
Patent
active
042265398
ABSTRACT:
An automatic cylindrical body appearance inspection apparatus comprises a cylindrical body appearance detecting device including rotating means for rotating the cylindrical body around its axis at a constant speed and detecting means for optically picking up an image of a cylindrical surface of the cylindrical body rotated by the rotating means and one-dimensionally scanning the image on a plane of real image thereof in a predetermined direction to extract a base line of the cylindrical surface of the cylindrical body as an image signal, an end surface appearance detecting device including a pair of detecting means each for optically picking up an image of each of opposite end surfaces of the cylindrical body and one-dimensionally scanning the image on a plane of real image thereof in a direction transverse to the predetermined direction to extract an image signal, transporting means for transporting the cylindrical body while it is positioned, from the cylindrical surface appearance detecting means to the end surface appearance detecting means and determining means for determining pass or fail or grade of a defect pattern on the surfaces of the cylindrical body based on the image signals derived from the cylindrical surface appearance detecting device and the end surface appearance detecting device, whereby the appearance of the cylindrical surface and the end surfaces of the cylindrical body under test is automatically inspected.
REFERENCES:
patent: 2857800 (1958-10-01), Stevens
patent: 3355014 (1967-11-01), Howles
patent: 3584963 (1971-06-01), Wisner
patent: 3812349 (1974-05-01), Gugliotta et al.
patent: 3818223 (1974-06-01), Gibson et al.
patent: 3980567 (1976-09-01), Benini
Metrology and Inspection, Autumn 1969, "Automatic Inspection of Fuel Element Pellets," Published by Vernon Instrument Co., Ltd.
"Citizen Fuel-Element Pellets Automatic Inspection Machine," Published by Citizen Watch Co., Ltd.
Hamada Toshimitsu
Makihira Hiroshi
Nakagawa Yasuo
Arnold Bruce Y.
Corbin John K.
Hitachi , Ltd.
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