Microgrinding aspherical mould inserts off tungsten carbide

This paper reports the development of microgrinding technologies for the fabrication of aspherical mould inserts. The work included the detailed investigations to the truing and dressing techniques for micro grinding wheels and the error compensation method for generating aspherical profiles. In particular, the effects of microstructure of the cemented tungsten carbide on material removal mechanisms, furthermore on microgrinding performance, were addressed. Micro aspherical inserts with diameters down to 210 mu m were fabricated using the developed grinding protocol