New indicators and standards for measuring of the end mill's helical groove by image processing

Abstract

The studies will be carried out using optical metrology methods on a Walter Helicheck inspection machine in reflected light and a number of images were stored to form a statistical sample. Established new indicators and criteria for grinding efficiency based on image processing of the helical groove of the end mill. As a result, recommendations for the selection of optical control techniques were made for the first time at the intermediate stage of technological preparation for production, in real time, and after processing. In this work, for the first time, we prove the possibility of determining the camera displacement pith distance during continuous scanning of the profile of a helical surface in a radial section, the measurement accuracy and recreating a three-dimensional model of the object. As a result of the work of the new algorithm using the Haar-wavelet with new indicators, it was established that the actual one is located inside the focal zone, which proves the possibility of applied application of the method of monitoring the shape of helical flute of end mills using computer vision. The measurement accuracy of the helical flute increased from 4 to 12% along its profile.

A new method and practical recommendations for measuring geometric accuracy, linear and angular measurements of helical surfaces of end mill for HSM

“…Advanced image capture capabilities based on complementary metal-oxide-semiconductor (CMOS) image sensors. Control of the shape of the helical flute is complicated by the variable curvature of the front panel of the end mill for high speed machining [73,74], the difficulty of lighting, the error in determining the focus settings in the hard-to-reach area of the helical flute [75][76][77], technological features of operation [78], the level of development of measuring instruments of the machine when an error occurs.…”