Nut tapping device and tapping method for fire-fighting accessory machining

The invention discloses a nut tapping device and tapping method for fire-fighting accessory machining, relates to the technical field of fire-fighting accessory machining, and solves the problems that when nuts in fire-fighting accessories are tapped in the prior art, multiple workpieces cannot be machined at the same time, the tapping efficiency is low, and the nuts of different sizes are inconvenient to quickly mount and discharge. And the operation is troublesome. The nut tapping device for fire-fighting accessory machining comprises a supporting and pushing mechanism, a transmission connecting mechanism is installed on the upper end face of the supporting and pushing mechanism, the transmission connecting mechanism comprises a connecting frame, separation pushing blocks, a connecting frame and a guide plate, and the eight separation pushing blocks are fixedly installed on one side of the connecting frame; and a connecting frame is mounted at the bottom end of the connecting frame. According to the device,