1985-11-11

Gear Tooth Contact Marking Measurement By Image Processing 852274

Tooth contact marking of gears is an important quality characteristic that affects tooth strength and gear noise. Tooth contact marking measurement is generally done by painting the tooth surfaces of two meshed gears, rotating the gears and visually observing contact marks. Since it requires much working hours and experience to judge such a measurement, a method of measuring contact tooth markers by image processing has been developed.
In this measurement method, the tooth surfaces of rotating gears are continuously observed by a TV camera, and the images are stored in an image memory device. Such quantities as the tooth surface size and tooth surface brightness level are set as initial settings, and the set values are compared with the observed images by a microcomputer to give the results of the measurement.

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