innovatively integrate grinding inner circle, clearing hole and internal counterbore in the process of ring die repair into a repair equipment. The cost of equipment is reduced by 40%, the occupied space of equipment is reduced by 60%, and the repair efficiency is improved by 30%. Great time saving. PLC control, intelligent calculation setting repair data, repair process without personnel supervision Gatherable process steps off ring die repair into one equipment, save the time-consuming steps of lifting. moving and clamping of ring die, and truly achieve one-stop ring die repairing