A new method definition of cutting surface of drills by image processing flank surface
Petr M. Pivkin, В. А. Гречишников, А. А. Ершов, Sergey N. Grigoriev
Abstract
We propose a method for detecting the boundaries of the cutting edge and flank surface of helical drills.To implement the proposed method, the drill is installed in a rotating holder on the coordinate measuring machine and the rotation around the axis and simultaneous recording of video from the transmitted light camera to create a sample of images, the processing of which determines the profile boundary in the axial section of the drill. To evaluate the accuracy of this method, comparisons of the data obtained with the algorithm and the measuring machine are given. To find the gradient drop zones, the Canny's method was improved with discrete smoothing processing of a sequential set of images while changing the angular position of the drill. In this case, the new method is relevant for real-time image processing with a specified accuracy of up to 5 µm and 30 minutes for linear and angular measurements.