| 摘要 |
PURPOSE: An air grinder is provided to allow compressed air from a nozzle to pass along the upper and lower side of a blade, thereby improving durability and efficiency with generating a rotational force due to a pressure difference between the sides having different lengths. CONSTITUTION: An air grinder includes a housing (10), a rear cap (100), a shaft (200), a rotary cutter, impellers (300,500,700), rotary blades (410,510), and guide disks (400,600). The hollow housing forms the exterior of the grinder. The rear cap forms the rear portion of the housing, and is connected with a hose feeding compressed air. The shaft is rotatable inside the housing. The rotary cutter at the housing rotates with the rotation of the shaft. The shaft penetrates the centers of the impellers, is coupled with the shaft, and rotates with the impellers. The rotary blades are consecutively formed along the peripheries of the impellers. The guide disks among the impellers are fixed to the housing. |
