For metal tools such as blade with sawtooth cutting edge, shaving, saw, filing, grater, electric chain saw and its manufacturing method, and nonmetallic materials, cutting edge units such as brushes, electric brushes Production method.

摘要

To produce a knife having a distal end portion of fine irregularities by winding a wire-shaped hard material around a core core material and then cutting it and attaching to the tip portion of the cutter.SOLUTION: A core material is wound, a wrapping material is wound around it, or the material is wound around a core material, so that the material is wrapped around the core material by winding the material, and the material is wound with a laser, a diamond cutter or the like , Cutting the winding material to make a cutting edge unit forming the end portion of the winding material. If the core and the winding material are both metals, the cutting edge unit is embedded in the tip of the cutter by forging or the like to form a knife, saw, file, etc. When both the core and the winding material are synthetic resins, brushes and the like can be formed. They can also be motorized.(FIG.