Efficient slotting tool for machining internal spline groove of blind hole

The utility model belongs to the field of machining, and particularly relates to an efficient slotting tool for machining an internal spline groove of a blind hole, which comprises a tool handle, an overhanging tool body fixedly matched with the tool handle, a mounting groove and a cutting edge support body vertically arranged on one side of the overhanging tool body, a V-shaped positioning surface arranged on the inner side of the mounting groove, and a blade fixedly matched with the upper end of the cutting edge support body, the blade is embedded in the mounting groove and is of a rhombic hard alloy structure corresponding to the V-shaped positioning face of the mounting groove in shape. According to the utility model, the workpiece processing procedures are centralized, the efficiencyis improved, the form and location tolerance of product processing is accurate, the product stability is excellent, the blade can be used twice, the cost is greatly reduced, and the cutter cost requirement of the product proc