Self-positioning drilling tool for sewing equipment shell

The invention relates to the technical field of machining tools, in particular to a self-positioning drilling tool for a sewing equipment shell. The device comprises a connecting piece and a machining piece arranged at the bottom of the connecting piece. According to the device, the correcting body is arranged, when the correcting body is close to the surface of the equipment shell, the frame slides along the connecting springs arranged on the periphery, then the frame and the synchronous body make contact with the surface of the equipment shell, and it can be ensured that the central axes of the connecting cylinder and the drill bit are perpendicular to the surface of the equipment shell; through the arrangement of the telescopic rod, the drill bit can vertically drill into the surface of the equipment shell during drilling operation, so that the drilling quality of the equipment shell is guaranteed, then through the arrangement of the positioning assembly, before the drill bit makes contact with the surface