Tapping machines are specialized metal cutting machine tools used for precisely machining internal threads in pre-drilled holes. Their core principle involves the synchronized rotation and axial feed of a clamped tap, which cuts threads into the workpiece's hole wall. The equipment typically features forward and reverse rotation capabilities for tapping and retracting, and is equipped with a torque overload protection device to prevent tap breakage. Tapping machines are widely used in mechanical manufacturing, mold processing, automotive parts, and electronic product casings, efficiently and reliably performing large-volume or high-precision internal thread machining tasks, significantly improving thread quality and production efficiency.