Frame tapping mechanism

The utility model relates to the technical field of automatic machining, in particular to a frame tapping mechanism which comprises a tapping machine body, a supporting module, a sensing module, a positioning module and a tapping module, the supporting module, the sensing module, the positioning module and the tapping module are all arranged on the tapping machine body, the supporting module is used for supporting a plate to be tapped, and the sensing module is used for sensing whether the plate is placed on the supporting module or not. The positioning module is used for pressing the plate, and the tapping module is used for tapping the plate. Through the arrangement of the positioning module, the top of the to-be-tapped position of the plate is pressed and held before tapping, then the tapping module carries out tapping from the bottom of the plate, and therefore it is guaranteed that tapping force is not dispersed too much, and deformation of the plate is avoided. 本实用新型涉及自动化加工技术领域，尤其是指一种框架攻牙机构，包括攻牙机体、均设置于攻