A study on optimization of internal grinding cycle.

The transient state in the internal grinding process due to extremely low mechanical stiffness causes an increase in the machining time in most practical operations. In this study, therefore, theoretical as well as experimental investigations have been carried out to minimize the grinding cycle time. The proposed grinding cycle is composed of rough grinding with rapid infeed, dressing and fine grinding with rapid infeed. It is confirmed by the grinding tests that the total grinding time can be reduced markedly through the proposed cycle. The amount of rapid infeed for rough and fine grinding can be theoretically determined by assuming the grinding process as the first order system with time constant T.