Automatic dimensioning model of contact profilometer based on linear fitting

Abstract

 Contact profilometer can measure the contours of various precision mechanical parts, which is of great significance to the industrial development. Aiming at the problem of automatic labeling of contact-type profilometer, the mathematical models of parameters such as slot width, distance between center of circle, Angle between oblique line and straight line and radius of circle are established by means of linear regression fitting and least square method. The contours of the measured workpiece under the tilt state are checked and corrected. The differences between the calculated values of the parameters of the workpiece under the two measurement states were analyzed to obtain more accurate and complete contour lines.