Measurement of Diameter and Geometry of Precision Bearing Balls
This technique enables contact-free measurements of ball diameters using a pattern matching method. During pattern measurement a pixel value is determined, which will subsequently be used for service measurements.
Fig.1
Ball image in CCD camera (Model image on 100х100 matrix)
Fig.2.
Circle edge identification following differentiation along two axes
Along axis X engle values renge from -1800 to + 1800. The average value of the all the points is 1*10-6.
Circle radius R = 37.03975
Center of circle coordinates:
xc = 52.73784
yc = 53.23058
Values are given in pixels.
A spectral analysis of deviations provides an entire spectrum of geometrical distortions of the circle shape in amplitudes and phases of the harmonics.
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