Special noise-reducing saw blade for joint cutter

The utility model provides a special noise-reducing saw blade for a joint cutter and belongs to the technical field of machining. The special noise-reducing saw blade structurally comprises a base body; a central hole is formed on the center of the base plate and positioning holes are arranged along the periphery of the central hole; cutting heads are uniformly arranged at the edge of the outer circumference of the base body; the cutting heads are triangular and each two triangular cutting heads are grouped; triangular bottom edges of the two cutting heads of each group are adjacent and vertexes are oppositely arranged; noise-reducing holes are arranged on the base body between the each group of the cutting heads and the central hole; and a water groove is arranged between each two groups of the cutting heads. Compared with the prior art, the special noise-reducing saw blade for the joint cutter has the characteristics of reasonable design, simple structure, convenience for use and the like, has the advantage