Assembling tool and method for accurately controlling orientation consistency of seed crystals

The invention relates to the field of single-crystal high-temperature alloys, in particular to an assembly tool and method for accurately controlling the orientation consistency of seed crystals. According to the assembling tool, a fixed bracket and a movable bracket are oppositely arranged at the top of a slide rail base, and the movable bracket is pushed forwards to insert a heated seed crystal on a wax mold; a fixed end four-jaw chuck is installed on the fixed support, a rotatable four-jaw chuck is installed on the movable support, the rotatable four-jaw chuck is connected with the movable support through a bearing, and the fixed end four-jaw chuck and the rotatable four-jaw chuck correspond to each other and are coaxial. One end of a horizontal seed crystal is mounted on the rotatable four-jaw chuck, and a heating ring is mounted on the outer side of the other end of the seed crystal; one end of a horizontal wax mold is mounted on the fixed end four-jaw chuck, and the other end of the seed crystal corresp