High-speed machining places high demands on the balance performance of the tool components. The so-called tool assembly includes the tool and the tool holder. First, any rotating body is subjected to the centrifugal force during the rotation process. F=mrω~2. In the formula, m represents the mass of the rotating body, r represents the distance between the center of gravity and the axis, and ω represents the angular velocity. If the rotating body is completely in equilibrium, that is, the center of gravity coincides with the axis, it can be regarded as the centrifugal force F=0. If the rotating body is in a non-equilibrium state, that is, when the center of gravity is different from the axis, then the rotating body will be subjected to a large centrifugal force at high speed (see Figure 1). Therefore, if the tool is in this situation, the performance of the tool will be significantly reduced, the tool bar will bend and vibrate, and excessive vibration will cause radial runout problems, thus shortening the knife.
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