Grinding of optical glasses with cup wheels - A new way to generate polishable surfaces

Abstract

Conventionally the machining sequence of optical glass lenses consists of rough grinding, fine grinding and polishing. At this time the research in glass machining techniques concentrates on rough grinding and fine grinding, especially tool and process optimisation. The shown results of rough grinding tests offer the possibility to eliminate the fine grinding process out of the machining sequence. The surface quality which can be reached depends, besides other circumstances like machine parameters, on the glass material. This is described just as the used research methods and measuring techniques.