Milling tool specially used for groove

The utility model relates to a special-purpose milling tool for grooves and comprises a box and a motor arranged on the box. The box is provided inside with a couple of milling tool shaft and a gear shaft which are provided with gears and interlocked by the gears. The output of the motor sequentially passes a speed-adjusting machine and a decelerator and is connected with the milling tool shaft. One end of the milling tool shaft reaches out of the box and is fixed with a milling tool. The lower surface of the box is provided with a V-shaped groove which cooperates with a triangular rib on a workpiece. The utility model overcomes the defects that special-purpose milling tools for grooves of prior art are complex in structure, low in machining accuracy of workpieces and thereby the interchangeability of the accessories of a whole machine is affected. With the above design, the assemble structure of the special-purpose milling tool for grooves is greatly simplified. The utility model has the advantages of high machining accuracy, high reliability and good interchangeability of workpieces.