Large tool bit of large saw blade for cutting high-hardness stone and producing method thereof

The invention relates to a diamond tool, and provides a large tool bit of a large saw blade for cutting high-hardness stone and a producing method of the large tool bit. The large tool bit of the large saw blade for cutting the high-hardness stone can be used for cutting high-hardness granite and is provided with a high-density matrix. The matrix is high in hardness and good in impact toughness. Meanwhile, high-strength diamond with fine particles is adopted, the stress of a single piece of diamond is reduced, the probability of crushing and falling of the diamond is reduced, the continuous working of the diamond with the cutting edge of the saw blade is guaranteed, and the cutting sharpness is improved. Due to the structural design that a thick edge layer, thin working middle layer and thin non-working layer of the tool bit serve as intervals, it is ensured that the welding symmetry degree is within 0.1mm, the cutting stability is ensured, and the processing noise is reduced. 本发明涉及种金刚石工具，提供种用于切割高硬度石材大锯片的大刀头及