With the use of high-speed milling depth, hoping the tool circumference, face, beating Park arc at all controlled within 0.005mm. Because the tool in practical use, because of its runout accuracy problems clamping system of the machine itself and spindle runout change (usually increase). Therefore, the use of cnc tool grinder can easily beating controlled within the required range. Ensure the runout accuracy, coupled with the adjustment tool geometry parameters, it can reasonably be used in any process where the tool, such as in the processing of non-ferrous metallurgical industry, you can use a large rake angle ways to make cutting more light; and in the processing cast iron and other hard metal, you can use a negative rake angle of approach. Improves the stability of the tool, you can enhance the cutting speed and feed rate, because users no longer have to produce vibration during machining and blindly reduce speed and feed rate, and it can also be a substantial increase in production efficiency.