The structure of guide rail bracket was analyzed, and a set of progressive die was designed for producing this product, and in order to simplify the die structure, the final process involving the inward bending on the bottom of product was changed to the punching by single-stroke die. Then, for the flange threading holes on the side and bottom of product, a stamping process of punching the base hole first, then flanging, followed by threading with a tapping device, and finally bending was adopted. Furthermore, for synchronous tapping of flanged holes during the stamping process, a tapping device was installed in the progressive die, which was driven to rotate by the vertical movement of upper die, therefore achieving the tapping of flanged holes. For the inward bending at the bottom of product formed by two continuous bending at both ends of product, it was stamped twice. Firstly, the progressive die was used to bend both ends to 90°, and then a single-stroke die was used to bend the ends again to 90°, so that the first bending naturally bent to the bottom of product. In addition, in order to overcome springback, the bending process in the progressive die was divided into a 75° pre-bending and a 90° bending, and the 75° pre-bending was stamped by the upper and lower dies. Finally, in order to facilitate the demolding of flanged holes at both ends of product, the lower die of the 90° bending process was designed with a sloping top structure.