Cutter for machining large end face deep ring groove

The utility model relates to the technical field of large part machining tools, in particular to a tool for machining a large end face deep ring groove, which comprises a tool bar, a tool bit and a blade, the tool bar and the tool bit are combined into an L shape, and the blade is mounted on the tool bit and is arc-shaped; the blade is connected with the tool bit through the connecting part, and the arc-shaped blade is installed on the tool bit in the length direction of the connecting part. The whole tool is in an F shape, stretches into a part in the radial direction and then stretches into the part in a bent mode to machine the ring groove, the large-scale deep ring groove can be machined on the basis of a lathe, and the reinforcing effect is achieved; the arc-shaped blade is adopted, and the mounting direction of the blade is consistent with the length direction of the connecting part, so that the stress of the cutter is more balanced, and the risks of cutter breakage and damage are reduced; and the whole