Rotary cutter for battery case

The invention relates to the technical field of battery shell machining, in particular to a battery shell rotary cutter which comprises a workbench, a feeding station, a machining station and a discharging station which are annularly and evenly distributed are arranged on the workbench, supporting tables used for containing workpieces are arranged on the feeding station and the discharging station, and a rotary cutting tool is arranged on the machining station; the rotating mechanism comprises a rotating disc rotationally arranged above the workbench, a plurality of rotating chucks are arranged on the rotating disc corresponding to all the feeding stations, the machining stations and the discharging stations, the rotating chucks are used for clamping workpieces and driving the workpieces to rotate, and the rotating disc rotates by a set angle, so that the workpieces sequentially pass through the feeding stations, the machining stations and the discharging stations; and the lifting mechanism is located below t