The application relates to the technical field of
grinding tools, and discloses
a diamond grinding tool, which comprises a tool rod and a tool head fixed at the end of the tool rod, the tool head comprises a
cemented carbide base and
a diamond abrasive layer sintered on the surface of the
cemented carbide base, the
diamond abrasive layer completely and uniformly covers all
grinding working surfaces of the
cemented carbide base, has no defects such as missing coverage and local
thin layer, and can effectively guarantee the overall grinding precision and
wear resistance of the tool. The
diamond grinding tool is provided with a multilayer composite
diamond abrasive structure on the grinding working surface of the tool head, different-
diameter diamond abrasives are arranged in
layers, the
chip space of the working surface of the tool head can be improved, the problems of grinding efficiency reduction and workpiece surface burning caused by
chip blockage in the gap between abrasives during the
grinding process can be avoided, the
bonding strength of the diamond abrasive layer and the cemented
carbide base is improved in combination with a
metal transition bonding layer, early falling of the abrasives is avoided, and the service life of the tool is prolonged.