功率超声珩磨单颗磨粒耦合颤振模型

摘要

Flutter,a dynamic and severe self-excited vibration easily to produce in power ultrasonic honing,is one of the important factors that affect the processing quality of the workpiece and the efficiency of the machine tool.In the basis of study in mechanism of power ultrasonic honing,choosing single abrasive and workpiece as research objects,respectively established the physical and mathematical of power ultrasonic honing nonlinear system with two degrees of freedom of coupling flutter,and determined the differential expression of the model,and provided a theoretical basis for to further seeking the strategy for repressing and eliminating the flutter.%颤振是功率超声珩磨中极易产生的一种动态强烈自激振动现象,是影响工件加工质量和机床加工效率的重要因素之一.在对功率超声珩磨机理研究的基础上,以单颗磨粒工件系统为研究对象,分别建立了功率超声珩磨系统的两自由度非线性耦合颤振物理模型及数学模型,并确定了其微分方程表达式,为进一步寻求抑制、消除颤振策略提供了理论依据.