Quick and automatic positioning and clamping tool for bracket drilling

The utility model relates to the technical field of positioning and clamping tools, in particular to a quick and automatic positioning and clamping tool for bracket drilling, which comprises a base, a plurality of brackets are symmetrically and fixedly arranged at the top end of the front side of the base in an array manner, and a supporting plate is fixedly connected between the top ends of the adjacent brackets; supporting plates are fixedly arranged at the top end of the base, limiting blocks are fixedly arranged in the middles of the top ends of the supporting plates correspondingly, supports are symmetrically and fixedly arranged at the top end of the rear side of the base, first air cylinders are fixedly arranged at the top ends of the supports correspondingly, alignment plates are fixedly connected to the output ends of the first air cylinders correspondingly, and the alignment plates are located right behind the adjacent limiting blocks correspondingly. A groove is formed in the top end of the front s