Rapid back milling cutter disc device

The utility model relates to the technical field of cutters, in particular to a rapid back milling cutter head device, which comprises a cutter head body, a cutter bar, a flange plate, a positioning column, an anti-rotation piece and a plurality of cutter grains arranged on the peripheral side wall of the cutter head body, and the cutter head body is provided with a flange mounting hole, an anti-rotation mounting groove and a positioning hole. The cutter bar, the flange plate and the positioning column are sequentially, integrally and coaxially connected, the flange plate is provided with an anti-rotation groove, the positioning column is inserted into the positioning hole, the flange plate is embedded into the flange mounting hole, and the anti-rotation piece is arranged in the anti-rotation mounting groove and the anti-rotation groove; and the flange plate is locked on the cutter head body through the second locking piece. Modular assembly is achieved, disassembly, assembly and maintenance are convenient, t