Self-boring tool and self-boring process for thrust package of speed reducer special for single-screw extruder

The invention relates to a self-boring tool and a self-boring process for a thrust package of a speed reducer special for a single-screw extruder, and belongs to the technical field of special speed reducer machining. The supporting seat is used for fixing the self-boring mechanism; the tensioning assembly is used for fixing the supporting seat on one side of the output shaft of the speed reducer; and the self-boring mechanism rotates along with the rotation of the output shaft of the speed reducer through the supporting seat. The process is based on the tool, a numerical control system is adopted, automatic feeding of the tool rest in the self-boring mechanism is controlled and achieved through accurate positioning and calculation of the numerical control system, and therefore rough machining and finish machining instructions of the thrust package are completed. According to the self-boring mechanism, the coaxiality and perpendicularity of the whole self-boring mechanism and the output shaft are improved thr