在机械加工中,机床及其部件、刀具、工件等,常常出现自激振动,这对表面光洁度、加工精度、刀具和机床以及生产率等,都是不利的,应尽量消除或减弱.自激振动的基本特征是,它不是由外界干扰所引起,而是在切削加工过程中不断吸取能量,以维持其稳定的振动.要消除或减弱这种振动,一方面是寻找导致自振 In machining, the self-excited vibration of the machine tool and its parts, tools and workpieces often appear, which is unfavorable to surface finish, machining accuracy, tool and machine tool and productivity, and should be eliminated or weakened as much as possible. The basic feature is that it is not caused by external interference, but in the cutting process continue to draw energy to maintain its stable vibration.To eliminate or reduce this vibration, on the one hand is to find the cause of self-vibration