Cutter feeding device of boring machine cutter bar

The utility model relates to a cutter feeding device of a boring machine cutter bar. The cutter feeding device comprises a guide rail (1), a carriage (2), a cutter support (3), a dial tooth (4), a copper pin (5), a screw rod (6), a cutter feeding device base (8) and an opposite folding axle clamp (9), wherein the opposite folding axle clamp (9) is arranged on the end portion of the cutter feeding device base (8), the guide rail (1) is fixed on the cutter feeding device base (8), the cutter support (3) is fixed on the carriage (2), the copper pin (5) is sleeved in the carriage (2) which is arranged on the guide rail (1) in a sliding mode, the screw rod (6) is fixed at left and right ends of the guide rail (1) through a plane bearing, the copper pin (5) and the screw rod (6) are in threaded connection, and the dial tooth (4) is arranged on the end portion of the screw rod (6). According to the cutter feeding device of the boring machine cutter bar, boring accuracy can be guaranteed, work efficiency is guarantee