METHOD AND DEVICE FOR DETECTING DIRECTION OF MEMBER HAVING OUTER PERIPHERY FORMED IN VERTICALLY ASYMMETRICAL SHAPE

A method and a device for discriminating an upper surface from a lower surface, particularly for detecting the directivity of an item having upper and lower surfaces which are hard to be discriminated merely with the naked eye in a member having an outer periphery formed in a vertically asymmetrical...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUSAWA MITSUYASU, TANABE HAJIME, WATANABE KOEI, USUI RYOJI, WATANABE OSAMU, OYA HIROYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MECHANICAL ENGINEERING PHYSICS PISTONS SEALINGS TESTING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A method and a device for discriminating an upper surface from a lower surface, particularly for detecting the directivity of an item having upper and lower surfaces which are hard to be discriminated merely with the naked eye in a member having an outer periphery formed in a vertically asymmetrical shape, for example, a disk- like, a cylindrical, or an annular member, more specifically, a piston ring with directivity which forms the component of an engine. The disk- like, cylindrical, or annular member having the outer periphery formed in the vertically asymmetrical shape is put on a reference plane having a reference block, the outer peripheral part of the member is brought into contact with the reference block on the reference plane, and the upper surface which is discriminated from the lower surface, inline, through a clearance formed between the outer peripheral part of the member and the reference block by using an illumination for light source and a camera for detection.