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应用机械系统动力学理论及仿真分析软件ADAMS,通过构建注塑机双曲肘合模机构的三维实体模型,把肘杆和拉杆视为柔性体,获得合模机构刚柔耦合多体系统动力学模型和振动分析系统模型;通过对合模机构进行振动响应仿真分析,获得系统的固有频率与阻尼比和幅频响应与功率谱;通过各阶模态参与和动模板在X、Y、Z方向上的位移与加速度以及振动能量分析,获得合模机构最大的共振位移和共振加速度及其模态振型,系统的振动属于弱阻尼状态,第2、7、8阶固有频率对合模机构系统振动影响最大。
Applying mechanical system dynamics theory and simulation analysis software ADAMS, the three-dimensional solid model of double-elbow mold clamping mechanism of plastic injection molding machine is constructed, the elbow bar and the pull rod are regarded as the flexible body, and the rigid-flexible coupled multi-body system dynamics model And vibration analysis system model. Through the simulation analysis of the vibration response of the clamping mechanism, the natural frequency, damping ratio and amplitude frequency response and power spectrum of the system are obtained. Through the modal participation and moving template in the X, Y, Z directions The displacement and acceleration and the vibration energy analysis of the mold clamping mechanism to obtain the maximum resonant displacement and resonant acceleration and its mode shape, the system vibration is weakly damped, the natural frequency of the 2nd, most influential.