The purpose of this paper was to provide the co-relation lapping conditions of a spectacle metal components. The main elements of lapping conditions were composed of rotation velocity, lapping time, graphite kinds, product quantity and faulty product ratio those were co-related and influenced at each other. The optimal working conditions of lapping were controled the each lapping conditions, mutual relations and reciprocal actions. It was studied the optimal lapping conditions those graphite kinds-rotation velocity-faulty product ratio, rotation velocity-lapping time, rotation velocity-product quantity. Based on these results, the optimal conditions were that the level of graphite was midiμm and rotation velocity was 40∼(60rpm.

The purpose of this paper is to provide the optimal grinding conditions of metal components of a spectacles. The main elements of grinding conditions are composed of grain size, grade, structure, grinding wheel velocity and shifting components velocity. The conditions are co- related and influenced at each other. The precision of grinding surface was controled the each grinding conditions, mutual relations and reciprocal actions. It was studied the co-relations of grinding conditions those machining time-grain size-roughness, grade-roughness, machining time-characteristics of structure- roughness, number of production-roughnessgrinding wheel velocity, number of production-shifting velocity-grinding wheel velocity. The optimal grinding working condition satisfied the demanded surface accuracy 0.5 ~ 1.5μm. Based on these results, the optimal conditions were that the grain size was 60, the grade was middle of HIJK and LMNO, wheel velocity was 25 m/sec, shifting velocity was 15 m/min.