Efficient and high-precision easy-open cover tongue piece lettering cutting die machining device

The utility model belongs to the technical field of tongue piece lettering cutting die machining, and particularly relates to an efficient and high-precision easy-open cover tongue piece lettering cutting die machining device which comprises a self-alignment fixing base and an alignment positioning plate, and the alignment positioning plate is installed on the self-alignment fixing base in a clamped mode. The tongue piece lettering clamp fixing base is arranged on the alignment positioning plate, a tongue piece lettering cutting die positioning clamp is installed on the tongue piece lettering clamp fixing base in a clamped mode, clamping grooves are symmetrically formed in the tongue piece lettering cutting die positioning clamp, and four tongue piece lettering cutting dies are arranged in the clamping grooves; and the fixing assembly is located in the tongue piece lettering cutting die positioning clamp and used for fixing the four tongue piece lettering cutting dies. The positioning device is simple in stru