TECHNOLOGICAL CAPABILITIES TO DECREASE NORTON VITRIUM WHEEL THERMAL ACTION ON WORKING SURFACES OF HIGH SPEED STEEL W9MO4CO8 PLATES OF MODULAR CUTTING TOOL
THE PURPOSE of the article is improving the efficiency of grinding that provides the increase in microhardness and decrease of burns of W9Mo4Co8 high-speed cutting plates (HSCP) under pendulum grinding by the abrasive tool periphery. METHODS. The article presents an innovative method determining the number of HSCP grinding burns with the use of digital technologies and ENVI software. The following equipment is used for the identification of grinding burns: a set of Smartum studio lighting with the sources of 5500<sup>о</sup>К, DSLR camera Canon 60D with the Tamron lens of 17-50 mm, f2.8-4.5 and a tripod. Interpretation of the experimental data obtained by means of statistical methods allowed to estimate the effectiveness of technological methods of grinding by the measures of position and dispersion. RESULTS. Based on experimental medians it seems feasible to implement the methods of up grinding (1111); down grinding (2111); grinding without coolant (1121) and dressing of a grinding wheel by natural diamonds (1112). Based on the stability of HSCP surface formation the following methods should be used: down grinding (2111) and dressing of the grinding wheel by natural diamonds (1112). CONCLUSION. It is feasible to use the proposed methods at grinding W9Mo4Co8 HSCP that enhance the performance properties of the HSCP surface, and, in particular, the durability of the modular tools at high process stability.