二维振动紧实台振动力大小及方向控制原理

Control Principle of the Vibratory Force Magnitude and Direction of 2D Vibrating Ramming Platform

本文介绍了一种消失模铸造造型用二维振动紧实台的结构,并研究了振动力大小和方向的控制原理。利用动量守恒定律,建立起四个振动电机偏心块在转动过程中转速及相互间相位差,与振动紧实台振动力大小及方向之间变化关系的数学模型。通过分析发现,振动紧实台振动力的大小与偏心块的转速的平方成正比;振动力的方向则由在转动过程中偏心块间的相位差决定。

The structure of 2D vibrating ramming platform for lost-foam casting was introduced and the control principle of the magnitude and direction of vibratory force was researched.Based on the law of momentum conservation,the mathematical model of the relationship between the speed and phase of the eccentric block of four vibrating motors in the course of rotation and the magnitude and direction of the vibratory force was established.It was found that the magnitude of the vibratory force was proportional to the square of the speed of the eccentric block,and the direction of the vibration force was determined by the phase difference between the eccentric blocks.