Generative precision grinding of optical glass

The deployment of cup wheels to precision-grind optical glass, offers both considerable economic advantages and significant increases in flexibility. in this contribution, the material removal mechanisms of the grinding process will be analysed on the basis of material-specific characteristics. Attention will focus on the transition phase from brittle to ductile chip formation. The first step in which the process model engages, is the identification of process-determining model components. The material-specific machining characteristics are added to the equation, permitting subsequent modelling of the interrelationships which influence the process. By comparing the theoretical result with the practical outcome, it is possible both to evaluate the model and to determine which machining strategy is most suitable for the glass type in question.