Combined cutting tool for improving production efficiency

The utility model provides a combined cutting tool for improving production efficiency, which includes a face-milling blade, a groove-milling tool bit, a straight shank tool body, and a bolt, wherein the face-milling blade is fixed on a side surface of the straight shank tool body through the bolt, and the groove-milling tool bit is fixed in a round hole of the straight shank tool body through screw threads. The utility model has the advantages of simple structure, convenient use, high working efficiency, and good product processing quality, can ensure the product planeness and the quality requirements like groove depth and width as well as roughness, can finish processing of face-milling and groove-milling of Cummins L-series valve cages in one step, and has replaceable tool bit and low use cost.