METAL TOOL SUCH AS CUTTING TOOL HAVING SAWTOOTH-SHAPED TIP, SHAVER, SAWTOOTH, GRATER, AND ELECTRICALLY-DRIVEN CHAIN SAW AND MANUFACTURING METHOD THEREOF, AND TIP UNIT IN NON-METAL MATERIAL SUCH AS BRUSH AND ELECTRICALLY-DRIVEN BRUSH, AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To produce a cutting tool having a tip with fine irregularities by cutting a centering core material after winding a wire-like hard material around the same, and by attaching the same to the tip of the cutting tool.;SOLUTION: Making a core material rotate to wind a winding material, or making the winding material rotate around the core material forms a state that the winding material is wound around the core material, and a tip unit that forms the end part of a winding material is produced by cutting the winding material with a laser beam or a diamond cutter. When both the core and the winding material are metal, the tip unit is embedded in the tip of the cutting tool by forging to form a knife, a saw, a file, and the like. When both the core and the winding material are synthetic resin, a brush can be produced. These can alternatively be electrically driven.;SELECTED DRAWING: Figure 7;COPYRIGHT: (C)2018,JPO&INPIT