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过去,对卧式转子平衡时振动的分析较多,而对立式转子的讨论则较少,本文就立式转子在下面的几个问题上作一些讨论:1)运动方程 2)振动中心 8)力偶干扰比图(1)为一般立式平衡机之结构示意图,摆架内装有主轴,工件装夹在主轴上,摆架由两片板弹簧支承于机座上。当主轴旋转时,工件的不平衡量产生的离心惯性力引起摆架系统运动。一般来说,它可以看成为具有两个自由度的振动系统。设摆架系统(包括工件)的质量为M,将工件的不平衡量分为静不平衡量m_1和偶不平衡量mA,通常,静不平衡量所产生的惯性力并不在偶不平衡量的惯性力偶的作用面内。 (如果它们共面,则可进一步简化为准静不平衡的情况)。
In the past, the analysis of the vibration of a horizontal rotor in equilibrium was relatively large, while the discussion of a vertical rotor was relatively small. In this paper, some discussions are made on the vertical rotor under the following problems: 1) Equation of motion 2) Center of vibration 8 (1) is a schematic diagram of a general vertical balancing machine. The swinging frame is equipped with a spindle, and the workpiece is clamped on the spindle. The swinging frame is supported by two plate springs on the base. When the spindle rotates, the centrifugal inertial force caused by the unbalance of the workpiece causes the swinging system to move. In general, it can be seen as a vibration system with two degrees of freedom. The mass of the pendulum system (including the workpiece) is M, and the unbalance of the workpiece is divided into the static unbalance amount m_1 and the even unbalance amount mA. Usually, the inertial force generated by the static unbalance amount does not act on the even unbalanced inertial force even In-plane. (If they are coplanar, it can be further reduced to quasi-static imbalances).