The tool can be divided into five categories according to the surface of the workpiece

Processing of a variety of external surface of the tools, including turning tools, planer, milling cutter, the outer surface of the broach and rasp; hole processing tools, including drill, reaming drill, boring knife, reamer and inner surface broach; Tools, including taps, die, automatic opening and closing thread cutting, thread turning tools and thread cutter, etc .; gear processing tools, including hobs, shaper cutter, shaving cutter, bevel gear cutting tool, cutting tool, Tooth saws, saws, saws, cutters and saw blades, and so on. In addition, there are combinations of tools.