In order to meet the normal working at high temperature and reduce the blower fan negative loading weight, the cold pressing board ST14 was selected as the blower fan material and the fan was of the combined structure. In order to meet the static balance indexes, on the sleeve drawing part, the end plane was preserved and the process square hole transmitting torque was punched. On the sleeve sidehole punching die, the measure was taken that the female die was static and the sleeve rotated with the divided circle. The divided precision was guaranteed with the divided pin and the location slot of the divided circle. In the welding frock of the blades and the sleeve, the standard parts were clamped rapidly one by one. Then the die structure was simplified. The clamping reliability and the production efficiency were improved. In the later detection unit, the dynamic balance was instead of the static balance because the fan blades weight was light. In fact the good result was achieved.