Vertical spinning tool for uncoiling piston

The utility model relates to an uncoiling piston vertical spinning tool which is composed of a workbench, an uncoiling piston, a fixing assembly, a pressing assembly comprising a rolling gear, a left motor and a right motor, and further comprises a front lead screw and a rear lead screw which are rotationally installed in the workbench, the uncoiling piston comprises an installation cavity, the fixing assembly is located in the installation cavity, and the uncoiling piston comprises a machining section. The pressing assembly comprises a matching shaft, a front mounting base and a rear mounting base, one end of the matching shaft is rotationally mounted on the rear mounting base, the other end of the matching shaft is inserted into the front mounting base, the rightward projection of the machining section falls on the rolling gear, a front positioning piece is fixedly mounted below the front mounting base, a rear positioning piece is fixedly mounted below the rear mounting base, and the front positioning piece