轴类运转时将产生惯性力或惯性力偶矩。由于其大小和方向随着运转而产生周期变化。若不平衡时则发生振动,轻者降低加工精度、产生噪声,引起零件磨损,重者则使机床破坏,影响极大。其原因往往是主轴材质不匀,部件结构安排不对称,加工和装配误差或者是运转一段时期后又产生变形,导致主轴重心偏离旋转中心。 When the shaft is running, inertial force or moment of inertia will be generated. Due to its size and direction with the operation of a cyclical change. If the imbalance occurs when the vibration, the light to reduce processing accuracy, resulting in noise, causing wear parts, heavy machine is destroyed, affecting great. The reasons are often uneven spindle material, parts structure asymmetry, machining and assembly errors or deformation after a period of operation, resulting in spindle center of gravity deviation from the center of rotation.