Abstract
Wheel wear equation in abrasive cutoff is identified by GMDH algorithm with successive determination of trends containing interaction terms. In the model equation, not only wheel, work material, feed and wheel speed, but grinding fluid are taken into account using input and output data obtained from wheel wear tests. The grinding ratio can be predicted for the combination of various factors using the model. With the wheel wear equation and machining cost model, for a given work material minimum cost combination of wheel, fluid, wheel speed and feed rate can be determined. And the relationship between these variables and costs is investigated.