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The uneven length of saw blade’s tooth width and pitch affects their life span seriously. At present, the manual measurements are mostly applied to inspect it, with low efficiency and low accuracy. This paper proposes a new method of measuring circular saw blades’ tooth width and pitch according to manual measurement based on vision measurement. The method uses techniques including threshold segmentation, feature extraction, morphology and sub-pixel. After preprocess, the smooth contours of saw blade can be got. On the basis of it, the number of teeth, tooth width and pitch length is obtained. By analyzing the experimental results, the average error of the method is 0.678 pixels, estimation error is 0.067 mm.

Tooth Width and Pitch of Circle Saw Blade Research Based on Vision Measurement