A automatic centering device for assembly

The utility model belongs to assembly appurtenance field, concretely relates to an automatic centering device for assembly, centering device include connecting portion and lower connecting portion, goup and be equipped with linking portion between connecting portion and time connecting portion, last connecting portion and linking portion adopt articulated making and go up connecting portion and can carry out angular shift within a definite time with linking portion, lower connecting portion and linking portion adopt swing joint to make down to carry out the offset between connecting portion and linking portion, one side that linking portion was being kept away from to last connecting portion be equipped with the connecting axle, lower connecting portion be equipped with the thrust axle inthe one side of keeping away from linking portion. The utility model discloses compact structure, the operation of being convenient for, safe and reliable has, manufacturing cost is lower and advantage such as positioning acc