Sealing plug for conical hole of workpiece

The utility model provides a sealing plug for a conical hole of a workpiece, which comprises a cylindrical shell and a cylindrical inner core, the hardness of the shell is smaller than that of the inner core and the workpiece, the inner core is placed in the shell, and the inner core and the shell are pressed into the conical hole at the same time; before press fitting, the outer peripheral surface of the inner core is in clearance fit with the inner peripheral surface of the shell; after press fitting, the shell is deformed due to extrusion of the hole wall of the conical hole, so that interference fit is formed between the inner core and the shell and between the shell and the conical hole. By adopting the sealing plug with the structure, the conical process hole does not need to be further processed, and the sealing plug can be directly pressed and used, so that the processing and manufacturing cost of a product is reduced. 本实用新型提供了一种用于工件锥形孔的密封堵头，该密封堵头由一个圆筒状的外壳和一个圆柱状的内芯构成，外壳的硬度小于内芯和工件的硬度，内芯放置在外壳内且两者被同时压装至锥