Computer aided inspection of drill point geometry (2nd report) : A simple inspection method by using CCD camera

This paper deals with an easy method for precisely evaluating the geometry of conically ground drill point from the coordinate data of many points on its flank surface. In the proposed method, the coordinate data are detected from CCD camera images of the drill point and the five parameters describing the geometry are estimated by fitting the data to the mathematical model of the grinding cone. The CCD camera simply gets outline images viewing from several different angular directions. As the parameter estimation method, Genetic Algorithm is used in which the condition of generation change and thee performance index are especially adopted for this fitting problem. The effectiveness of the proposed method has been verified according to the simulation and experiments.