Research on Measurement of Fried Dough Twists Drill Edge Band Width Based on LM Method
ZHOU Zheng1,TAI Ligang1,CHEN Zhiyuan2,ZHANG Yu1
1. School of Mechanical Engineering,Shenyang University of Technology,Shenyang, Liaoning 110870,China
2. Shenyang Municipal Group,Shenyang Municipal Group Corporation,Shenyang, Liaoning 110026,China
Abstract：A detection method of twist drill blade width based on binarization is proposed. Firstly, the target edge is sharpened, and then the edge information is extracted by Butterworth high-pass filtering. Secondly, through the improved Otsu binarization algorithm, the suspected edge points are threshold segmentation and the coordinates of the edge points are obtained. Again, the Levenberg-Marquardt(LM) method is used to fit the points near the edge, so as to get the edge band width curve and its inflection point, and get the data of edge band width of twist drill. Finally, the contrast experiment is carried out, and the untreated M35 blade image with a diameter of 2.5cm is processed by LM method, the blade width is 1.467mm, and the measurement error is 0.467mm.. The improved measurement result is 0.853mm and the measurement error is 0.147mm.
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2024, Vol. 45 
