Automatic groove milling tool for guide tooth part

The utility model provides an automatic groove milling tool for a guide tooth part. The automatic groove milling tool comprises a rotary table, a bottom plate, a tool main body, a tailstock and a platform positioning pin, according to the tool, the rotary table and the tailstock are connected with the tool body, and automatic machining of a milling groove is completed through rotation of the rotary table. The tool body is positioned through the bottom face of the workpiece and the two holes, the hydraulic spiral clamping device on the tool body is installed below the bridge plate, the clamping space is saved, and clamping and machining are facilitated. The hydraulic spiral clamping device is connected with the pressing plate and can drive the pressing plate to rotate within the range of 0-90 degrees. The shape of the pressing plate is matched with the shape of the workpiece blank, the workpiece blank can be smoothly clamped at the clamping position, and taking and placing of the workpiece are not affected at